Sigma rule: Mimikatz In-Memory

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-9b4282ff0d87, updated 2023-02-24T00:00:00.000Z.

Rule

Title
Mimikatz In-Memory
Status
unsupported
Level
medium
Author
sigma
Date
2017/03/13
Modified
2023/02/24
File
unsupported/windows/image_load_mimikatz_inmemory_detection.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects certain DLL loads when Mimikatz gets executed

Log source

product
windows
category
image_load

Detection

selector:
    Image: 'C:\Windows\System32\rundll32.exe'
dllload1:
    ImageLoaded|endswith: '\vaultcli.dll'
dllload2:
    ImageLoaded|endswith: '\wlanapi.dll'
exclusion:
    ImageLoaded:
        - 'ntdsapi.dll'
        - 'netapi32.dll'
        - 'imm32.dll'
        - 'samlib.dll'
        - 'combase.dll'
        - 'srvcli.dll'
        - 'shcore.dll'
        - 'ntasn1.dll'
        - 'cryptdll.dll'
        - 'logoncli.dll'
timeframe: 30s
condition: selector | near dllload1 and dllload2 and not exclusion

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.s0002
  • attack.t1003
  • attack.lateral_movement
  • attack.credential_access
  • car.2019-04-004

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/unsupported/windows/image_load_mimikatz_inmemory_detection.yml

Sources and licences

  • SigmaHQ

    "Mimikatz In-Memory" by sigma (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/unsupported/windows/image_load_mimikatz_inmemory_detection.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Mimikatz In-Memory",
entity page, dataset version ref-9b4282ff0d87, updated 2023-02-24T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/c0478ead-5336-46c2-bd5e-b4c84bc3a36e (accessed 2026-11-03).
Underlying source: SigmaHQ rule c0478ead-5336-46c2-bd5e-b4c84bc3a36e, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.