LockerGoga ransomware command-line pattern (Windows process creation)

Flags Windows processes with a specific LockerGoga-style command-line argument pattern.

FreeUnreviewedSigmacriticalv1
title: LockerGoga ransomware command-line pattern (Windows process creation)
id: d9d8fb86-e9cc-473f-998d-f614b834a8f5
status: stable
description: This rule identifies Windows process creation events whose command line contains a specific LockerGoga-related argument sequence. Attackers rely on distinctive CLI parameters to initialize ransomware behavior, making matching these values useful for early impact detection. The detection depends on process command-line telemetry captured at process creation time.
references:
  - https://medium.com/@malwaredancer/lockergoga-input-arguments-ipc-communication-and-others-bd4e5a7ba80a
  - https://blog.f-secure.com/analysis-of-lockergoga-ransomware/
  - https://www.carbonblack.com/blog/tau-threat-intelligence-notification-lockergoga-ransomware/
  - https://github.com/SigmaHQ/sigma/blob/master/rules-emerging-threats/2019/Malware/LockerGoga/proc_creation_win_malware_lockergoga_ransomware.yml
author: Vasiliy Burov, oscd.community, Huntrule Team
date: 2020-10-18
modified: 2023-02-03
tags:
  - attack.impact
  - attack.t1486
  - detection.emerging-threats
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    CommandLine|contains: -i SM-tgytutrc -s
  condition: selection
falsepositives:
  - Unlikely
level: critical
license: DRL-1.1
related:
  - id: 74db3488-fd28-480a-95aa-b7af626de068
    type: derived

What it detects

This rule identifies Windows process creation events whose command line contains a specific LockerGoga-related argument sequence. Attackers rely on distinctive CLI parameters to initialize ransomware behavior, making matching these values useful for early impact detection. The detection depends on process command-line telemetry captured at process creation time.

Known false positives

  • Unlikely

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.