Detection rules › Sigma

Suspicious Cabinet File Execution Via Msdt.EXE

Severity
medium
Author
Nasreddine Bencherchali (Nextron Systems), GossiTheDog, frack113
Source
upstream

Detects execution of msdt.exe using the "cab" flag which could indicates suspicious diagcab files with embedded answer files leveraging CVE-2022-30190

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1202 Indirect Command Execution

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation

Stages and Predicates

Stage 1: all of selection_img

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

Stage 2: all of selection_cmd

CommandLine|contains: ' -cab '

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
CommandLinematch
  • -cab
Imageends_with
  • \msdt.exe corpus 10 (sigma 10)
OriginalFileNameeq
  • msdt.exe corpus 6 (sigma 6)