detection.wiki

Detection rules › Sigma

Potential Attachment Manager Settings Attachments Tamper

Severity
high
Author
Nasreddine Bencherchali (Nextron Systems)
Source
upstream

Detects tampering with attachment manager settings policies attachments (See reference for more information)

Event coverage

ProviderEvent IDTitle
Sysmon13RegistryEvent (Value Set)

Stages and Predicates

Stage 1: selection_main

TargetObject|contains: '\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments\'

Stage 2: 1 of selection_value_hide_zone_info

Details: 'DWORD (0x00000001)'
TargetObject|endswith: '\HideZoneInfoOnProperties'

Stage 3: 1 of selection_value_save_zone_info

Details: 'DWORD (0x00000002)'
TargetObject|endswith: '\SaveZoneInformation'

Stage 4: 1 of selection_value_scan_with_av

Details: 'DWORD (0x00000001)'
TargetObject|endswith: '\ScanWithAntiVirus'

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.

FieldKindValues
Detailseq
  • DWORD (0x00000001) corpus 37 (sigma 37)
  • DWORD (0x00000002) corpus 9 (sigma 9)
TargetObjectends_with
  • \HideZoneInfoOnProperties
  • \SaveZoneInformation
  • \ScanWithAntiVirus
TargetObjectmatch
  • \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Attachments\