Renamed CreateDump Utility Execution — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2022-09-20 / 2023-02-14.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 3e651de59a933a0c87d08b5e35ac5740148f5aa88a59ec08eaa971aa853a89ab

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Renamed CreateDump Utility Execution
id: 1a1ed54a-2ba4-4221-94d5-01dee560d71e
related:
    - id: 515c8be5-e5df-4c5e-8f6d-a4a2f05e4b48
      type: similar
status: test
description: Detects uses of a renamed legitimate createdump.exe LOLOBIN utility to dump process memory
references:
    - https://www.crowdstrike.com/blog/overwatch-exposes-aquatic-panda-in-possession-of-log-4-shell-exploit-tools/
    - https://twitter.com/bopin2020/status/1366400799199272960
author: Florian Roth (Nextron Systems)
date: 2022-09-20
modified: 2023-02-14
tags:
    - attack.stealth
    - attack.t1036
    - attack.t1003.001
    - attack.credential-access
logsource:
    category: process_creation
    product: windows
detection:
    selection_pe:
        OriginalFileName: 'FX_VER_INTERNALNAME_STR'
    selection_cli:
        - CommandLine|contains|all:
              - ' -u ' # Short version of '--full'
              - ' -f ' # Short version of '--name'
              - '.dmp'
        - CommandLine|contains|all:
              - ' --full ' # Short version of '--full'
              - ' --name ' # Short version of '--name'
              - '.dmp'
    filter:
        Image|endswith: '\createdump.exe'
    condition: 1 of selection_* and not filter
falsepositives:
    - Command lines that use the same flags
level: high

Original YAML and metadata in JSON

False positives

• Command lines that use the same flags

Source references

• https://www.crowdstrike.com/blog/overwatch-exposes-aquatic-panda-in-possession-of-log-4-shell-exploit-tools/
• https://twitter.com/bopin2020/status/1366400799199272960