Sigma rule: Dropping Of Password Filter DLL

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-3ec4afa2b134, updated 2022-10-09T00:00:00.000Z.

Rule

Title
Dropping Of Password Filter DLL
Status
test
Level
medium
Author
Sreeman
Date
2020-10-29
Modified
2022-10-09
File
rules/windows/process_creation/proc_creation_win_reg_credential_access_via_password_filter.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects dropping of dll files in system32 that may be used to retrieve user credentials from LSASS

Log source

product
windows
category
process_creation

Detection

selection_cmdline:
    CommandLine|contains|all:
        - 'HKLM\SYSTEM\CurrentControlSet\Control\Lsa'
        - 'scecli\0*'
        - 'reg add'
condition: selection_cmdline

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.persistence
  • attack.credential-access
  • attack.defense-impairment
  • attack.t1556.002

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/process_creation/proc_creation_win_reg_credential_access_via_password_filter.yml

Sources and licences

  • SigmaHQ

    "Dropping Of Password Filter DLL" by Sreeman (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_reg_credential_access_via_password_filter.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: Dropping Of Password Filter DLL",
entity page, dataset version ref-3ec4afa2b134, updated 2022-10-09T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/b7966f4a-b333-455b-8370-8ca53c229762 (accessed 2026-11-03).
Underlying source: SigmaHQ rule b7966f4a-b333-455b-8370-8ca53c229762, 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.