CurrentVersion Autorun Keys Modification

Severity: medium
Time window: 5m
Match by: hostname
Source: github.com/chronicle/detection-rules

Detects modification of autostart extensibility point (ASEP) in registry

MITRE ATT&CK coverage

Tactic	Techniques
Persistence	`T1547.001` Boot or Logon Autostart Execution: Registry Run Keys / Startup Folder

References

https://github.com/SigmaHQ/sigma/blob/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_currentversion.yml

Event coverage

Provider	Event	Title
Sysmon	Event ID 13	RegistryEvent (Value Set)
Security-Auditing	Event ID 4657	A registry value was modified.

Rule body yaral

/*
 * Copyright 2025 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

rule currentversion_autorun_keys_modification {

  meta:
    author = "Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split)"
    description = "Detects modification of autostart extensibility point (ASEP) in registry"
    reference = "https://github.com/SigmaHQ/sigma/blob/master/rules/windows/registry/registry_set/registry_set_asep_reg_keys_modification_currentversion.yml"
    license = "https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md"
    rule_name = "CurrentVersion Autorun Keys Modification"
    rule_id = "mr_711750f0-0bf3-4c89-b771-65a1ed6aad05"
    sigma_uuid = "20f0ee37-5942-4e45-b7d5-c5b5db9df5cd"
    sigma_status = "test"
    tactic = "TA0003"
    technique = "T1547.001"
    data_source = "Sysmon Windows Registry"
    platform = "Windows"
    severity = "Medium"
    priority = "Medium"
    false_positives = "Legitimate software automatically sets up autorun keys"

  events:
    $reg.metadata.event_type = "REGISTRY_MODIFICATION"
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\software\\microsoft\\windows\\currentversion") and
    (
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\shellserviceobjectdelayload") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\run\\") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\runonce\\") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\runonceex\\") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\runservices\\") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\runservicesonce\\") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\policies\\system\\shell") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\policies\\explorer\\run") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\group policy\\scripts\\startup") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\group policy\\scripts\\shutdown") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\group policy\\scripts\\logon") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\group policy\\scripts\\logoff") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\explorer\\shellserviceobjects") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\explorer\\shelliconoverlayidentifiers") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\explorer\\shellexecutehooks") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\explorer\\sharedtaskscheduler") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\explorer\\browser helper objects") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\plap providers") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential providers") or
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential provider filters")
    )
    not (
        $reg.target.registry.registry_value_data = "(Empty)" or
        re.regex($reg.target.registry.registry_key, `\\NgcFirst\\ConsecutiveSwitchCount$`) nocase or
        re.regex($reg.principal.process.file.full_path, `\\AppData\\Local\\Microsoft\\OneDrive\\Update\\OneDriveSetup\.exe$`) nocase or
        re.regex($reg.principal.process.file.full_path, `\\AppData\\Roaming\\Spotify\\Spotify\.exe$`) nocase or
        re.regex($reg.principal.process.file.full_path, `\\AppData\\Local\\WebEx\\WebexHost\.exe$`) nocase or
        $reg.principal.process.file.full_path = "C:\\WINDOWS\\system32\\devicecensus.exe" nocase or
        $reg.principal.process.file.full_path = "C:\\Windows\\system32\\winsat.exe" nocase or
        $reg.principal.process.file.full_path = "C:\\Program Files\\Microsoft OneDrive\\StandaloneUpdater\\OneDriveSetup.exe" nocase or
        $reg.principal.process.file.full_path = "C:\\Program Files\\Microsoft OneDrive\\Update\\OneDriveSetup.exe" nocase or
        $reg.principal.process.file.full_path = "C:\\Program Files (x86)\\Microsoft OneDrive\\Update\\OneDriveSetup.exe" nocase or
        $reg.principal.process.file.full_path = "C:\\Program Files\\KeePass Password Safe 2\\ShInstUtil.exe" nocase or
        $reg.principal.process.file.full_path = "C:\\Program Files\\Everything\\Everything.exe" nocase or
        $reg.principal.process.file.full_path = "C:\\Program Files (x86)\\Microsoft Office\\root\\integration\\integrator.exe" nocase or
        (
            $reg.principal.process.file.full_path = "C:\\Windows\\system32\\LogonUI.exe" nocase and
            (
                strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential providers\\{d6886603-9d2f-4eb2-b667-1971041fa96b}\\") or
                strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential providers\\{bec09223-b018-416d-a0ac-523971b639f5}\\") or
                strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential providers\\{8af662bf-65a0-4d0a-a540-a338a999d36f}\\") or
                strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential providers\\{27fbdb57-b613-4af2-9d7e-4fa7a66c21ad}\\")
            )
        ) or
        (
            (
                strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files (x86)\\microsoft\\edgeupdate\\install\\") or
                strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files (x86)\\microsoft\\edgewebview\\") or
                strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files (x86)\\microsoft\\edge\\application\\msedge.exe")
            )
        ) or
        (
            $reg.principal.process.file.full_path = "C:\\Windows\\system32\\regsvr32.exe" nocase and
            strings.contains(strings.to_lower($reg.target.registry.registry_key), "dropboxt") and
            re.regex($reg.target.registry.registry_value_data, `A251-47B7-93E1-CDD82E34AF8B}$`) nocase
        ) or
        (
            re.regex($reg.target.registry.registry_key, `\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\Opera Browser Assistant$`) nocase and
            $reg.target.registry.registry_value_data = "C:\\Program Files\\Opera\\assistant\\browser_assistant.exe" nocase
        ) or
        (
            re.regex($reg.target.registry.registry_key, `\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\iTunesHelper$`) nocase and
            $reg.target.registry.registry_value_data = "\"C:\\Program Files\\iTunes\\iTunesHelper.exe\"" nocase
        ) or
        (
            re.regex($reg.target.registry.registry_key, `\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\RunOnce\\zoommsirepair$`) nocase and
            $reg.target.registry.registry_value_data = "\"C:\\Program Files\\Zoom\\bin\\installer.exe\" /repair" nocase
        ) or
        (
            re.regex($reg.target.registry.registry_key, `\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\Greenshot$`) nocase and
            $reg.target.registry.registry_value_data = "C:\\Program Files\\Greenshot\\Greenshot.exe" nocase
        ) or
        (
            re.regex($reg.target.registry.registry_key, `\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\GoogleDriveFS$`) nocase and
            strings.starts_with(strings.to_lower($reg.target.registry.registry_value_data), "c:\\program files\\google\\drive file stream\\") and
            strings.contains(strings.to_lower($reg.target.registry.registry_value_data), "\\googledrivefs.exe")
        ) or
        (
            strings.contains(strings.to_lower($reg.target.registry.registry_key), "googledrive") and
            (
                $reg.target.registry.registry_value_data = "{CFE8B367-77A7-41D7-9C90-75D16D7DC6B6}" or
                $reg.target.registry.registry_value_data = "{A8E52322-8734-481D-A7E2-27B309EF8D56}" or
                $reg.target.registry.registry_value_data = "{C973DA94-CBDF-4E77-81D1-E5B794FBD146}" or
                $reg.target.registry.registry_value_data = "{51EF1569-67EE-4AD6-9646-E726C3FFC8A2}"
            )
        ) or
        (
            (
                strings.starts_with(strings.to_lower($reg.target.registry.registry_value_data), "c:\\windows\\system32\\cmd.exe /q /c rmdir /s /q \"c:\\users\\") or
                strings.starts_with(strings.to_lower($reg.target.registry.registry_value_data), "c:\\windows\\system32\\cmd.exe /q /c del /q \"c:\\users\\")
             ) and
            strings.contains(strings.to_lower($reg.target.registry.registry_value_data), "\\appdata\\local\\microsoft\\onedrive\\")
        ) or
        (
            strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\microsoft\\windows\\currentversion\\runonce\\{") and
            strings.contains(strings.to_lower($reg.target.registry.registry_value_data), "\\appdata\\local\\package cache\\{") and
            strings.contains(strings.to_lower($reg.target.registry.registry_value_data), "}\\python-") and
            re.regex($reg.target.registry.registry_value_data, `\.exe" /burn\.runonce$`) nocase
        ) or
        (
            (
                strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files\\common files\\microsoft shared\\clicktorun\\") or
                strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files\\common files\\microsoft shared\\clicktorun\\updates\\")
            ) and
            re.regex($reg.principal.process.file.full_path, `\\OfficeClickToRun\.exe$`) nocase
        ) or
        $reg.principal.process.file.full_path = "C:\\Program Files\\Windows Defender\\MsMpEng.exe" nocase or
        (
            re.regex($reg.principal.process.file.full_path, `\\Microsoft\\Teams\\current\\Teams\.exe$`) nocase and
            strings.contains(strings.to_lower($reg.target.registry.registry_value_data), "\\microsoft\\teams\\update.exe --processstart ")
        ) or
        (
            $reg.principal.process.file.full_path = "C:\\Windows\\system32\\userinit.exe" nocase and
            $reg.target.registry.registry_value_data = "ctfmon.exe /n" nocase
        ) or
        (
            strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files\\avg\\antivirus\\setup\\") and
            (
                $reg.target.registry.registry_value_data = "\"C:\\Program Files\\AVG\\Antivirus\\AvLaunch.exe\" /gui" nocase or
                $reg.target.registry.registry_value_data = "\"C:\\Program Files (x86)\\AVG\\Antivirus\\AvLaunch.exe\" /gui" nocase or
                $reg.target.registry.registry_value_data = "{472083B0-C522-11CF-8763-00608CC02F24}" nocase
            )
        ) or
        (
            re.regex($reg.principal.process.file.full_path, `\\aurora-agent(|-64)\.exe$`) nocase and
            re.regex($reg.target.registry.registry_key, `\\Microsoft\\Windows\\CurrentVersion\\Run\\aurora-dashboard$`) nocase and
            $reg.target.registry.registry_value_data = "C:\\Program Files\\Aurora-Agent\\tools\\aurora-dashboard.exe" nocase
        ) or
        (
            re.regex($reg.target.registry.registry_key, `\\Microsoft\\Windows\\CurrentVersion\\Run\\Everything$`) nocase and
            re.regex($reg.target.registry.registry_value_data, `\\Everything\\Everything\.exe" -startup$`) nocase
        )
    )

    $reg.principal.hostname = $hostname

  match:
    $hostname over 5m

  outcome:
    //example usage of specifying test hostname to adjust risk score
    $risk_score = max(if($reg.principal.hostname = "hostname", 0, 15))
    $principal_hostname = array_distinct($reg.principal.hostname)
    $principal_process_pid = array_distinct($reg.principal.process.pid)
    $principal_process_file_full_path = array_distinct($reg.principal.process.file.full_path)
    $principal_process_product_specific_process_id = array_distinct($reg.principal.process.product_specific_process_id)
    $principal_user_userid = array_distinct($reg.principal.user.userid)
    $target_registry_key = array_distinct($reg.target.registry.registry_key)
    $target_registry_value_data = array_distinct($reg.target.registry.registry_value_data)
    $log_type = array_distinct(strings.concat($reg.metadata.log_type,"/",$reg.metadata.product_event_type))

  condition:
    $reg
}

Stages and Predicates

Stage 0: `match + condition`

match:
    $hostname over 5m
condition:
    $reg

Fires when at least one $reg event in the 5m window.

Stage 1: `events: $reg · REGISTRY_MODIFICATION`

$reg.metadata.event_type = "REGISTRY_MODIFICATION"
strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\software\\microsoft\\windows\\currentversion") and
(
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\shellserviceobjectdelayload") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\run\\") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\runonce\\") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\runonceex\\") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\runservices\\") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\runservicesonce\\") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\policies\\system\\shell") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\policies\\explorer\\run") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\group policy\\scripts\\startup") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\group policy\\scripts\\shutdown") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\group policy\\scripts\\logon") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\group policy\\scripts\\logoff") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\explorer\\shellserviceobjects") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\explorer\\shelliconoverlayidentifiers") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\explorer\\shellexecutehooks") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\explorer\\sharedtaskscheduler") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\explorer\\browser helper objects") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\plap providers") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential providers") or
    strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential provider filters")
)
not (
    $reg.target.registry.registry_value_data = "(Empty)" or
    re.regex($reg.target.registry.registry_key, `\\NgcFirst\\ConsecutiveSwitchCount$`) nocase or
    re.regex($reg.principal.process.file.full_path, `\\AppData\\Local\\Microsoft\\OneDrive\\Update\\OneDriveSetup\.exe$`) nocase or
    re.regex($reg.principal.process.file.full_path, `\\AppData\\Roaming\\Spotify\\Spotify\.exe$`) nocase or
    re.regex($reg.principal.process.file.full_path, `\\AppData\\Local\\WebEx\\WebexHost\.exe$`) nocase or
    $reg.principal.process.file.full_path = "C:\\WINDOWS\\system32\\devicecensus.exe" nocase or
    $reg.principal.process.file.full_path = "C:\\Windows\\system32\\winsat.exe" nocase or
    $reg.principal.process.file.full_path = "C:\\Program Files\\Microsoft OneDrive\\StandaloneUpdater\\OneDriveSetup.exe" nocase or
    $reg.principal.process.file.full_path = "C:\\Program Files\\Microsoft OneDrive\\Update\\OneDriveSetup.exe" nocase or
    $reg.principal.process.file.full_path = "C:\\Program Files (x86)\\Microsoft OneDrive\\Update\\OneDriveSetup.exe" nocase or
    $reg.principal.process.file.full_path = "C:\\Program Files\\KeePass Password Safe 2\\ShInstUtil.exe" nocase or
    $reg.principal.process.file.full_path = "C:\\Program Files\\Everything\\Everything.exe" nocase or
    $reg.principal.process.file.full_path = "C:\\Program Files (x86)\\Microsoft Office\\root\\integration\\integrator.exe" nocase or
    (
        $reg.principal.process.file.full_path = "C:\\Windows\\system32\\LogonUI.exe" nocase and
        (
            strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential providers\\{d6886603-9d2f-4eb2-b667-1971041fa96b}\\") or
            strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential providers\\{bec09223-b018-416d-a0ac-523971b639f5}\\") or
            strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential providers\\{8af662bf-65a0-4d0a-a540-a338a999d36f}\\") or
            strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\authentication\\credential providers\\{27fbdb57-b613-4af2-9d7e-4fa7a66c21ad}\\")
        )
    ) or
    (
        (
            strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files (x86)\\microsoft\\edgeupdate\\install\\") or
            strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files (x86)\\microsoft\\edgewebview\\") or
            strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files (x86)\\microsoft\\edge\\application\\msedge.exe")
        )
    ) or
    (
        $reg.principal.process.file.full_path = "C:\\Windows\\system32\\regsvr32.exe" nocase and
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "dropboxt") and
        re.regex($reg.target.registry.registry_value_data, `A251-47B7-93E1-CDD82E34AF8B}$`) nocase
    ) or
    (
        re.regex($reg.target.registry.registry_key, `\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\Opera Browser Assistant$`) nocase and
        $reg.target.registry.registry_value_data = "C:\\Program Files\\Opera\\assistant\\browser_assistant.exe" nocase
    ) or
    (
        re.regex($reg.target.registry.registry_key, `\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\iTunesHelper$`) nocase and
        $reg.target.registry.registry_value_data = "\"C:\\Program Files\\iTunes\\iTunesHelper.exe\"" nocase
    ) or
    (
        re.regex($reg.target.registry.registry_key, `\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\RunOnce\\zoommsirepair$`) nocase and
        $reg.target.registry.registry_value_data = "\"C:\\Program Files\\Zoom\\bin\\installer.exe\" /repair" nocase
    ) or
    (
        re.regex($reg.target.registry.registry_key, `\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\\Greenshot$`) nocase and
        $reg.target.registry.registry_value_data = "C:\\Program Files\\Greenshot\\Greenshot.exe" nocase
    ) or
    (
        re.regex($reg.target.registry.registry_key, `\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\\GoogleDriveFS$`) nocase and
        strings.starts_with(strings.to_lower($reg.target.registry.registry_value_data), "c:\\program files\\google\\drive file stream\\") and
        strings.contains(strings.to_lower($reg.target.registry.registry_value_data), "\\googledrivefs.exe")
    ) or
    (
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "googledrive") and
        (
            $reg.target.registry.registry_value_data = "{CFE8B367-77A7-41D7-9C90-75D16D7DC6B6}" or
            $reg.target.registry.registry_value_data = "{A8E52322-8734-481D-A7E2-27B309EF8D56}" or
            $reg.target.registry.registry_value_data = "{C973DA94-CBDF-4E77-81D1-E5B794FBD146}" or
            $reg.target.registry.registry_value_data = "{51EF1569-67EE-4AD6-9646-E726C3FFC8A2}"
        )
    ) or
    (
        (
            strings.starts_with(strings.to_lower($reg.target.registry.registry_value_data), "c:\\windows\\system32\\cmd.exe /q /c rmdir /s /q \"c:\\users\\") or
            strings.starts_with(strings.to_lower($reg.target.registry.registry_value_data), "c:\\windows\\system32\\cmd.exe /q /c del /q \"c:\\users\\")
         ) and
        strings.contains(strings.to_lower($reg.target.registry.registry_value_data), "\\appdata\\local\\microsoft\\onedrive\\")
    ) or
    (
        strings.contains(strings.to_lower($reg.target.registry.registry_key), "\\microsoft\\windows\\currentversion\\runonce\\{") and
        strings.contains(strings.to_lower($reg.target.registry.registry_value_data), "\\appdata\\local\\package cache\\{") and
        strings.contains(strings.to_lower($reg.target.registry.registry_value_data), "}\\python-") and
        re.regex($reg.target.registry.registry_value_data, `\.exe" /burn\.runonce$`) nocase
    ) or
    (
        (
            strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files\\common files\\microsoft shared\\clicktorun\\") or
            strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files\\common files\\microsoft shared\\clicktorun\\updates\\")
        ) and
        re.regex($reg.principal.process.file.full_path, `\\OfficeClickToRun\.exe$`) nocase
    ) or
    $reg.principal.process.file.full_path = "C:\\Program Files\\Windows Defender\\MsMpEng.exe" nocase or
    (
        re.regex($reg.principal.process.file.full_path, `\\Microsoft\\Teams\\current\\Teams\.exe$`) nocase and
        strings.contains(strings.to_lower($reg.target.registry.registry_value_data), "\\microsoft\\teams\\update.exe --processstart ")
    ) or
    (
        $reg.principal.process.file.full_path = "C:\\Windows\\system32\\userinit.exe" nocase and
        $reg.target.registry.registry_value_data = "ctfmon.exe /n" nocase
    ) or
    (
        strings.starts_with(strings.to_lower($reg.principal.process.file.full_path), "c:\\program files\\avg\\antivirus\\setup\\") and
        (
            $reg.target.registry.registry_value_data = "\"C:\\Program Files\\AVG\\Antivirus\\AvLaunch.exe\" /gui" nocase or
            $reg.target.registry.registry_value_data = "\"C:\\Program Files (x86)\\AVG\\Antivirus\\AvLaunch.exe\" /gui" nocase or
            $reg.target.registry.registry_value_data = "{472083B0-C522-11CF-8763-00608CC02F24}" nocase
        )
    ) or
    (
        re.regex($reg.principal.process.file.full_path, `\\aurora-agent(|-64)\.exe$`) nocase and
        re.regex($reg.target.registry.registry_key, `\\Microsoft\\Windows\\CurrentVersion\\Run\\aurora-dashboard$`) nocase and
        $reg.target.registry.registry_value_data = "C:\\Program Files\\Aurora-Agent\\tools\\aurora-dashboard.exe" nocase
    ) or
    (
        re.regex($reg.target.registry.registry_key, `\\Microsoft\\Windows\\CurrentVersion\\Run\\Everything$`) nocase and
        re.regex($reg.target.registry.registry_value_data, `\\Everything\\Everything\.exe" -startup$`) nocase
    )
)

$reg.principal.hostname = $hostname

Exclusions

Top-level NOT(...) conjuncts: predicates this rule actively suppresses.

Stage	Field	Kind	Excluded values
1	`principal.process.file.full_path`	starts_with	`c:\\program files\\common files\\microsoft shared\\clicktorun\\`
1	`principal.process.file.full_path`	starts_with	`c:\\program files\\common files\\microsoft shared\\clicktorun\\updates\\`
1	`principal.process.file.full_path`	regex_match	`\OfficeClickToRun.exe$`
1	`target.registry.registry_key`	contains	`\\authentication\\credential providers\\{27fbdb57-b613-4af2-9d7e-4fa7a66c21ad}\\`
1	`target.registry.registry_key`	contains	`\\authentication\\credential providers\\{8af662bf-65a0-4d0a-a540-a338a999d36f}\\`
1	`target.registry.registry_key`	contains	`\\authentication\\credential providers\\{bec09223-b018-416d-a0ac-523971b639f5}\\`
1	`target.registry.registry_key`	contains	`\\authentication\\credential providers\\{d6886603-9d2f-4eb2-b667-1971041fa96b}\\`
1	`principal.process.file.full_path`	eq	`C:\\Windows\\system32\\LogonUI.exe`
1	`target.registry.registry_value_data`	eq	`\"C:\\Program Files (x86)\\AVG\\Antivirus\\AvLaunch.exe\" /gui`
1	`target.registry.registry_value_data`	eq	`\"C:\\Program Files\\AVG\\Antivirus\\AvLaunch.exe\" /gui`
1	`target.registry.registry_value_data`	eq	`{472083B0-C522-11CF-8763-00608CC02F24}`
1	`principal.process.file.full_path`	starts_with	`c:\\program files\\avg\\antivirus\\setup\\`
1	`target.registry.registry_value_data`	eq	`{51EF1569-67EE-4AD6-9646-E726C3FFC8A2}`
1	`target.registry.registry_value_data`	eq	`{A8E52322-8734-481D-A7E2-27B309EF8D56}`
1	`target.registry.registry_value_data`	eq	`{C973DA94-CBDF-4E77-81D1-E5B794FBD146}`
1	`target.registry.registry_value_data`	eq	`{CFE8B367-77A7-41D7-9C90-75D16D7DC6B6}`
1	`target.registry.registry_key`	contains	`googledrive`
1	`target.registry.registry_value_data`	starts_with	`c:\\windows\\system32\\cmd.exe /q /c del /q \"c:\\users\\`
1	`target.registry.registry_value_data`	starts_with	`c:\\windows\\system32\\cmd.exe /q /c rmdir /s /q \"c:\\users\\`
1	`target.registry.registry_value_data`	contains	`\\appdata\\local\\microsoft\\onedrive\\`
1	`principal.process.file.full_path`	eq	`C:\\Windows\\system32\\regsvr32.exe`
1	`target.registry.registry_key`	contains	`dropboxt`
1	`target.registry.registry_value_data`	regex_match	`A251-47B7-93E1-CDD82E34AF8B}$`
1	`principal.process.file.full_path`	eq	`C:\\Windows\\system32\\userinit.exe`
1	`target.registry.registry_value_data`	eq	`ctfmon.exe /n`
1	`principal.process.file.full_path`	regex_match	`\Microsoft\Teams\current\Teams.exe$`
1	`target.registry.registry_value_data`	contains	`\\microsoft\\teams\\update.exe --processstart`
1	`principal.process.file.full_path`	regex_match	`\aurora-agent(\|-64).exe$`
1	`target.registry.registry_key`	regex_match	`\Microsoft\Windows\CurrentVersion\Run\aurora-dashboard$`
1	`target.registry.registry_value_data`	eq	`C:\\Program Files\\Aurora-Agent\\tools\\aurora-dashboard.exe`
1	`target.registry.registry_key`	contains	`\\microsoft\\windows\\currentversion\\runonce\\{`
1	`target.registry.registry_value_data`	contains	`\\appdata\\local\\package cache\\{`
1	`target.registry.registry_value_data`	contains	`}\\python-`
1	`target.registry.registry_value_data`	regex_match	`.exe" /burn.runonce$`
1	`target.registry.registry_key`	regex_match	`\Microsoft\Windows\CurrentVersion\Run\Everything$`
1	`target.registry.registry_value_data`	regex_match	`\Everything\Everything.exe" -startup$`
1	`target.registry.registry_key`	regex_match	`\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\zoommsirepair$`
1	`target.registry.registry_value_data`	eq	`\"C:\\Program Files\\Zoom\\bin\\installer.exe\" /repair`
1	`target.registry.registry_key`	regex_match	`\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Greenshot$`
1	`target.registry.registry_value_data`	eq	`C:\\Program Files\\Greenshot\\Greenshot.exe`
1	`target.registry.registry_key`	regex_match	`\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Opera Browser Assistant$`
1	`target.registry.registry_value_data`	eq	`C:\\Program Files\\Opera\\assistant\\browser_assistant.exe`
1	`target.registry.registry_key`	regex_match	`\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\iTunesHelper$`
1	`target.registry.registry_value_data`	eq	`\"C:\\Program Files\\iTunes\\iTunesHelper.exe\"`
1	`target.registry.registry_key`	regex_match	`\Software\Microsoft\Windows\CurrentVersion\Run\GoogleDriveFS$`
1	`target.registry.registry_value_data`	contains	`\\googledrivefs.exe`
1	`target.registry.registry_value_data`	starts_with	`c:\\program files\\google\\drive file stream\\`
1	`principal.process.file.full_path`	eq	`C:\\Program Files (x86)\\Microsoft Office\\root\\integration\\integrator.exe`
1	`principal.process.file.full_path`	eq	`C:\\Program Files (x86)\\Microsoft OneDrive\\Update\\OneDriveSetup.exe`
1	`principal.process.file.full_path`	eq	`C:\\Program Files\\Everything\\Everything.exe`
1	`principal.process.file.full_path`	eq	`C:\\Program Files\\KeePass Password Safe 2\\ShInstUtil.exe`
1	`principal.process.file.full_path`	eq	`C:\\Program Files\\Microsoft OneDrive\\StandaloneUpdater\\OneDriveSetup.exe`
1	`principal.process.file.full_path`	eq	`C:\\Program Files\\Microsoft OneDrive\\Update\\OneDriveSetup.exe`
1	`principal.process.file.full_path`	eq	`C:\\Program Files\\Windows Defender\\MsMpEng.exe`
1	`principal.process.file.full_path`	eq	`C:\\WINDOWS\\system32\\devicecensus.exe`
1	`principal.process.file.full_path`	eq	`C:\\Windows\\system32\\winsat.exe`
1	`principal.process.file.full_path`	regex_match	`\AppData\Local\Microsoft\OneDrive\Update\OneDriveSetup.exe$`
1	`principal.process.file.full_path`	regex_match	`\AppData\Local\WebEx\WebexHost.exe$`
1	`principal.process.file.full_path`	regex_match	`\AppData\Roaming\Spotify\Spotify.exe$`
1	`principal.process.file.full_path`	starts_with	`c:\\program files (x86)\\microsoft\\edge\\application\\msedge.exe`
1	`principal.process.file.full_path`	starts_with	`c:\\program files (x86)\\microsoft\\edgeupdate\\install\\`
1	`principal.process.file.full_path`	starts_with	`c:\\program files (x86)\\microsoft\\edgewebview\\`
1	`target.registry.registry_key`	regex_match	`\NgcFirst\ConsecutiveSwitchCount$`
1	`target.registry.registry_value_data`	eq	`(Empty)`

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

Field	Kind	Values
`target.registry.registry_key`	contains	`\\authentication\\credential provider filters` transforms: `tolower` `\\authentication\\credential providers` transforms: `tolower` `\\authentication\\plap providers` transforms: `tolower` `\\explorer\\browser helper objects` transforms: `tolower` `\\explorer\\sharedtaskscheduler` transforms: `tolower` `\\explorer\\shellexecutehooks` transforms: `tolower` `\\explorer\\shelliconoverlayidentifiers` transforms: `tolower` `\\explorer\\shellserviceobjects` transforms: `tolower` `\\group policy\\scripts\\logoff` transforms: `tolower` `\\group policy\\scripts\\logon` transforms: `tolower` `\\group policy\\scripts\\shutdown` transforms: `tolower` `\\group policy\\scripts\\startup` transforms: `tolower` `\\policies\\explorer\\run` transforms: `tolower` `\\policies\\system\\shell` transforms: `tolower` `\\run\\` transforms: `tolower` `\\runonce\\` transforms: `tolower` `\\runonceex\\` transforms: `tolower` `\\runservices\\` transforms: `tolower` `\\runservicesonce\\` transforms: `tolower` `\\shellserviceobjectdelayload` transforms: `tolower` `\\software\\microsoft\\windows\\currentversion` transforms: `tolower`

Output fields

Fields the rule emits when it matches. Chronicle authors list these in the outcome block; they appear on the detection and $risk_score drives alerting. Sentinel / Defender XDR rules build them up through project / summarize / extend stages. Sentinel maps these into alert fields via entityMappings and customDetails; Defender XDR custom detections surface them as alert fields directly.

Field	Source
`risk_score`	`max(if($reg.principal.hostname = "hostname", 0, 15))`
`principal_hostname`	`array_distinct($reg.principal.hostname)`
`principal_process_pid`	`array_distinct($reg.principal.process.pid)`
`principal_process_file_full_path`	`array_distinct($reg.principal.process.file.full_path)`
`principal_process_product_specific_process_id`	`array_distinct($reg.principal.process.product_specific_process_id)`
`principal_user_userid`	`array_distinct($reg.principal.user.userid)`
`target_registry_key`	`array_distinct($reg.target.registry.registry_key)`
`target_registry_value_data`	`array_distinct($reg.target.registry.registry_value_data)`
`log_type`	`array_distinct(strings.concat($reg.metadata.log_type,"/",$reg.metadata.product_event_type))`

`j` / `k`	Scroll down / up
`d` / `u`	Half-page down / up
`gg` / `G`	Top / bottom
`h` / `l`	History back / forward
`f`	Follow link (`Shift` = new tab)
`/`	Focus search
`?`	Toggle this help
`↑` / `↓`	Navigate search results
`Enter`	Open highlighted result
`Esc`	Close results / dialog

`type:`	`events` / `rules` / `providers`
`vendor:`	`sigma` / `elastic` / `splunk` / `kusto` / `chronicle` (vendor name alone also works: `sigma:`, `kql:`, `secops:`…)
`tactic:`	TA-id, slug, or name: `credential_access`, `TA0006`
`technique:`	technique or sub-technique ID: `T1003`, `T1003.001` (alias `tech:`)
`severity:`	`critical` / `high` / `medium` / `low` / `informational` (alias `sev:`)
`stages:`	Rules with exactly N pipeline stages
`correlation:`	`single_event` / `sequence` / `alternatives` / `alternatives_cross_log` / `all_required` / `correlated`
`with:`	Co-occurrence event-id; stacks (`with:4624 with:4769`) to require all, while a comma list in one occurrence (`with:4624,4769`) is an either-or group. Implies multi-event
`like:`	Structural neighbors of a rule slug (equivalents + subsumption stricter / broader): `like:comsvcs_lsass_memory_dump-splunk-sysmon`
`groupby:`	Entity-grouping substring match against `group_by_keys`: `groupby:user`, `groupby:host`
`uses:`	Rules whose predicate tree touches the field (any kind, any value): `uses:CommandLine`
`excludes:`	Rules with top-level `not()` clauses on the field (FP whitelists): `excludes:ParentImage`
`field:` / `value:`	Predicate search; narrows rule cards to those with a matching leaf and drives the indicator tier. Unquoted = substring, wildcards allowed (`value:mimikatz`)
`indicator:`	Shorthand for `field:F value:V`: `indicator:Image=*\powershell.exe`
`kind:`	Filter by predicate kind. Narrows rule cards to those carrying a matching predicate leaf (`vendor:elastic kind:cidr_match`) and drives the indicator tier: `contains` / `starts_with` / `ends_with` / `regex` / `cidr` / `eq` / `in` … (operator aliases `op:`/`match:`)
`has:` / `no:`	`sample`, `field`, `notes`, `refs`, `trace`, `thirdparty`, `rule`, `pattern`, `timewindow`, `threshold`, `newterms`, `sigma`/`elastic`/`splunk`/`kusto`/`chronicle`
`-op:val`	Exclude matches; works on most operators but not `type:`/`like:`/`has:`/`no:` (use `no:<flag>` to exclude a rule flag): `tactic:execution -vendor:splunk`. Standalone `-kind:`/`-field:`/`-value:` drop every rule carrying a matching predicate leaf (`type:rules -kind:is_null`)
`field:"…"` / `value:"…"`	Quoted value = anchored exact match (also allows spaces): `value:"net user"`
`a,b`	Comma = OR inside one operator (`vendor:sigma,elastic`, `severity:high,critical`); repeating a facet merges the same way. `field:`/`value:` never split (literal commas)
`vendors:` / `stage:`	Singular and plural spellings fold to the canonical operator and value: `tactics:` = `tactic:`, `type:event` = `type:events`, `correlation:sequences` = `correlation:sequence`, `has:thresholds` = `has:threshold`
`"quoted phrase"`	Exact-match a multi-word phrase (free text)

CurrentVersion Autorun Keys Modification

MITRE ATT&CK coverage

References

Event coverage

Rule body yaral

Stages and Predicates

Stage 0: `match + condition`

Stage 1: `events: $reg · REGISTRY_MODIFICATION`

Exclusions

Indicators

Output fields

Keyboard shortcuts

Search operators

CurrentVersion Autorun Keys Modification

MITRE ATT&CK coverage

References

Event coverage

Rule body yaral

Stages and Predicates

Stage 0: match + condition

Stage 1: events: $reg · REGISTRY_MODIFICATION

Exclusions

Indicators

Output fields

Stage 0: `match + condition`

Stage 1: `events: $reg · REGISTRY_MODIFICATION`