Detection rules › Sigma

Arbitrary MSI Download Via Devinit.EXE

Severity
medium
Author
Florian Roth (Nextron Systems)
Source
upstream

Detects a certain command line flag combination used by "devinit.exe", which can be abused as a LOLBIN to download arbitrary MSI packages on a Windows system

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1218 System Binary Proxy Execution

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation
Security-Auditing4688A new process has been created.

Stages and Predicates

Stage 1: selection

CommandLine|contains: ' -i http'
CommandLine|contains: ' -t msi-install '

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
  • -i http
  • -t msi-install