Detectionhightest

PUA - CsExec Execution

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

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Florian Roth (Nextron Systems)Created Mon Aug 22Updated Tue Feb 21d08a2711-ee8b-4323-bdec-b7d85e892b31windows

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic

detection:
    selection:
        Image|endswith: '\csexec.exe'
    selection_pe:
        Description: 'csexec'
    condition: 1 of selection*

False Positives

Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References

MITRE ATT&CK

Tactics

Sub-techniques

Rule Metadata

Rule ID

d08a2711-ee8b-4323-bdec-b7d85e892b31

Status

test

Level

high

Type

Detection

Created

Mon Aug 22

Modified

Tue Feb 21

Author

Path

rules/windows/process_creation/proc_creation_win_pua_csexec.yml

Raw Tags

attack.resource-developmentattack.t1587.001attack.executionattack.t1569.002