Detection rules › Sigma

MsiExec Web Install

Severity
medium
Author
Florian Roth (Nextron Systems)
Source
upstream

Detects suspicious msiexec process starts with web addresses as parameter

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1218.007 System Binary Proxy Execution: Msiexec
Command & ControlT1105 Ingress Tool Transfer

Event coverage

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

Stages and Predicates

Stage 1: selection

CommandLine|contains: ' msiexec'
CommandLine|contains: '://'

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
  • msiexec corpus 2 (sigma 2)
  • :// corpus 4 (sigma 4)