Sigma rule: NTDS Exfiltration Filename Patterns

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-b067a6757e8e, updated 2023-05-05T00:00:00.000Z.

Rule

Title
NTDS Exfiltration Filename Patterns
Status
test
Level
high
Author
Florian Roth (Nextron Systems)
Date
2022-03-11
Modified
2023-05-05
File
rules/windows/file/file_event/file_event_win_ntds_exfil_tools.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects creation of files with specific name patterns seen used in various tools that export the NTDS.DIT for exfiltration.

Log source

product
windows
category
file_event

Detection

selection:
    TargetFilename|endswith:
        - '\All.cab' # https://github.com/rapid7/metasploit-framework/blob/eb6535009f5fdafa954525687f09294918b5398d/data/post/powershell/NTDSgrab.ps1
        - '.ntds.cleartext' # https://github.com/SecureAuthCorp/impacket/blob/7d2991d78836b376452ca58b3d14daa61b67cb40/impacket/examples/secretsdump.py#L2405
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.credential-access
  • attack.t1003.003

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/rules/windows/file/file_event/file_event_win_ntds_exfil_tools.yml

Sources and licences

  • SigmaHQ

    "NTDS Exfiltration Filename Patterns" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/file/file_event/file_event_win_ntds_exfil_tools.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: NTDS Exfiltration Filename Patterns",
entity page, dataset version ref-b067a6757e8e, updated 2023-05-05T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/3a8da4e0-36c1-40d2-8b29-b3e890d5172a (accessed 2026-11-03).
Underlying source: SigmaHQ rule 3a8da4e0-36c1-40d2-8b29-b3e890d5172a, 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.