rules/windows/process_creation/proc_creation_win_indirect_cmd.yml

title: Indirect Command Execution
id: fa47597e-90e9-41cd-ab72-c3b74cfb0d02
status: test
description: Detect indirect command execution via Program Compatibility Assistant (pcalua.exe or forfiles.exe).
author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community
references:
  - https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1202/T1202.md
  - https://eqllib.readthedocs.io/en/latest/analytics/884a7ccd-7305-4130-82d0-d4f90bc118b6.html
date: 2019/10/24
modified: 2021/11/27
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    ParentImage|endswith:
      - '\pcalua.exe'
      - '\forfiles.exe'
  condition: selection
fields:
  - ComputerName
  - User
  - ParentCommandLine
  - CommandLine
falsepositives:
  - Need to use extra processing with 'unique_count' / 'filter' to focus on outliers as opposed to commonly seen artifacts.
  - Legitimate usage of scripts.
level: low
tags:
  - attack.defense_evasion
  - attack.t1202
Added Atomic Blue Detections Repo 2019-10-28 11:59:49 +01:00			`title: Indirect Command Execution`
UUIDs + moved unsupported logic 2019-12-19 23:56:36 +01:00			`id: fa47597e-90e9-41cd-ab72-c3b74cfb0d02`
$frack113$ Change status for old rules 2021-11-27 11:33:14 +01:00			`status: test`
Updated ART reference links from .yaml to .md and sub-technique links. 2021-07-06 17:21:22 +08:00			`description: Detect indirect command execution via Program Compatibility Assistant (pcalua.exe or forfiles.exe).`
fixed various spelling errors all over rules and source code 2021-02-24 14:43:13 +00:00			`author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community`
Update win_indirect_cmd.yml 2019-11-11 03:20:09 +03:00			`references:`
$frack113$ Change status for old rules 2021-11-27 11:33:14 +01:00			`- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1202/T1202.md`
			`- https://eqllib.readthedocs.io/en/latest/analytics/884a7ccd-7305-4130-82d0-d4f90bc118b6.html`
Added Atomic Blue Detections Repo 2019-10-28 11:59:49 +01:00			`date: 2019/10/24`
$frack113$ Change status for old rules 2021-11-27 11:33:14 +01:00			`modified: 2021/11/27`
OSCD QA wave 3 2020-01-19 22:34:16 +01:00			`logsource:`
$frack113$ Change status for old rules 2021-11-27 11:33:14 +01:00			`category: process_creation`
			`product: windows`
Added Atomic Blue Detections Repo 2019-10-28 11:59:49 +01:00			`detection:`
$frack113$ Change status for old rules 2021-11-27 11:33:14 +01:00			`selection:`
			`ParentImage\|endswith:`
			`- '\pcalua.exe'`
			`- '\forfiles.exe'`
			`condition: selection`
OSCD QA wave 1 2020-01-11 00:11:27 +01:00			`fields:`
$frack113$ Change status for old rules 2021-11-27 11:33:14 +01:00			`- ComputerName`
			`- User`
			`- ParentCommandLine`
			`- CommandLine`
Added Atomic Blue Detections Repo 2019-10-28 11:59:49 +01:00			`falsepositives:`
$frack113$ Change status for old rules 2021-11-27 11:33:14 +01:00			`- Need to use extra processing with 'unique_count' / 'filter' to focus on outliers as opposed to commonly seen artifacts.`
			`- Legitimate usage of scripts.`
OSCD QA wave 2 2020-01-17 15:46:28 +01:00			`level: low`
$frack113$ Change status for old rules 2021-11-27 11:33:14 +01:00			`tags:`
			`- attack.defense_evasion`
			`- attack.t1202`