Control Panel Items

Severity: high
Author: Kyaw Min Thein, Furkan Caliskan (@caliskanfurkan_)
Source: upstream

Detects the malicious use of a control panel item

MITRE ATT&CK coverage

Tactic	Techniques
Persistence	`T1546` Event Triggered Execution
Privilege Escalation	`T1546` Event Triggered Execution
Defense Evasion	`T1218.002` System Binary Proxy Execution: Control Panel

Event coverage

Provider	Event ID	Title
Sysmon	1	Process creation

Stages and Predicates

Stage 1: `all of selection_reg_img`

or:
Image|endswith: '\reg.exe'
OriginalFileName: reg.exe

Stage 2: `all of selection_reg_cli`

CommandLine|contains: 'CurrentVersion\Control Panel\CPLs'
CommandLine|contains: add

Stage 3: `selection_cpl`

CommandLine|endswith: .cpl

Stage 4: `not 1 of filter_cpl_*`

or:
CommandLine|contains: ' /s '
CommandLine|contains: igfxCPL.cpl
CommandLine|contains: 'regsvr32 '
CommandLine|contains: '%System%'
CommandLine|contains: '\System32\'
CommandLine|contains: '|C:\Windows\system32|'

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
`CommandLine`	ends_with	`.cpl` corpus 2 (sigma 2)
`CommandLine`	match	`/s` corpus 3 (sigma 3) `%System%` `CurrentVersion\Control Panel\CPLs` `\System32\` `add` corpus 16 (sigma 16) `igfxCPL.cpl` `regsvr32` `\|C:\Windows\system32\|`
`Image`	ends_with	`\reg.exe` corpus 46 (sigma 46)
`OriginalFileName`	eq	`reg.exe` corpus 29 (sigma 29)

Control Panel Items

MITRE ATT&CK coverage

Event coverage

Stages and Predicates

Stage 1: all of selection_reg_img

Stage 2: all of selection_reg_cli

Stage 3: selection_cpl

Stage 4: not 1 of filter_cpl_*

Indicators

Stage 1: `all of selection_reg_img`

Stage 2: `all of selection_reg_cli`

Stage 3: `selection_cpl`

Stage 4: `not 1 of filter_cpl_*`