Detection rules › Sigma

SyncAppvPublishingServer Bypass Powershell Restriction - PS Module

Severity
medium
Author
Ensar Şamil, @sblmsrsn, OSCD Community
Source
upstream

Detects SyncAppvPublishingServer process execution which usually utilized by adversaries to bypass PowerShell execution restrictions.

MITRE ATT&CK coverage

TacticTechniques
Defense EvasionT1218 System Binary Proxy Execution

Event coverage

ProviderEvent IDTitle
PowerShell4103Payload Context: ContextInfo User Data: UserData.

Stages and Predicates

Stage 1: selection

ContextInfo|contains: SyncAppvPublishingServer.exe

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
ContextInfomatch
  • SyncAppvPublishingServer.exe