CmdID

CmdID / Rules / Windows

Use of Pcalua For Execution

A Sigma rule for process creation on Windows, by Nasreddine Bencherchali (Nextron Systems), E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community.

medium 1 ATT&CK technique 1 program it names

What it looks for

its detection, as SigmaHQ writes it
detection:
  selection:
    CommandLine|contains: ' -a'
    Image|endswith: '\pcalua.exe'
  condition: selection

The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by Nasreddine Bencherchali (Nextron Systems), E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community, under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.

Command lines that trip it

documented abuse, read by CmdID

The commands LOLBAS or GTFOBins documents for pcalua.exe trip it: each is on its program’s page, read by CmdID.

Programs and files it names

their pages here
pcalua.exe

ATT&CK

the techniques it is tagged with
T1059Command and Scripting Interpreter

Other rules for T1059 Command and Scripting Interpreter

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