Detection rules › Sigma

PUA - CsExec Execution

Severity
high
Author
Florian Roth (Nextron Systems)
Source
upstream

Detects the use of the lesser known remote execution tool named CsExec a PsExec alternative

MITRE ATT&CK coverage

TacticTechniques
Resource DevelopmentT1587.001 Develop Capabilities: Malware
ExecutionT1569.002 System Services: Service Execution

Event coverage

ProviderEvent IDTitle
Sysmon1Process creation

Stages and Predicates

Stage 1: 1 of selection

Image|endswith: '\csexec.exe'

Stage 2: 1 of selection_pe

Description: csexec

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
Descriptioneq
  • csexec
Imageends_with
  • \csexec.exe