Sigma rule: HackTool - HandleKatz Duplicating LSASS Handle

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-1374790d2ce4, updated 2023-11-28T00:00:00.000Z.

Rule

Title
HackTool - HandleKatz Duplicating LSASS Handle
Status
test
Level
high
Author
Bhabesh Raj (rule), @thefLinkk
Date
2022-06-27
Modified
2023-11-28
File
rules/windows/process_access/proc_access_win_hktl_handlekatz_lsass_access.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects HandleKatz opening LSASS to duplicate its handle to later dump the memory without opening any new handles

Log source

product
windows
category
process_access

Detection

selection:
    TargetImage|endswith: '\lsass.exe' # Theoretically, can be any benign process holding handle to LSASS
    GrantedAccess: '0x1440' # Only PROCESS_DUP_HANDLE, PROCESS_QUERY_LIMITED_INFORMATION, PROCESS_QUERY_INFORMATION
    # Example: C:\Windows\SYSTEM32\ntdll.dll+9d234\|UNKNOWN(00000000001C119B)
    CallTrace|startswith: 'C:\Windows\System32\ntdll.dll+'
    CallTrace|contains: '|UNKNOWN('
    CallTrace|endswith: ')'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.execution
  • attack.t1106
  • attack.t1003.001
  • attack.credential-access

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_access/proc_access_win_hktl_handlekatz_lsass_access.yml

Sources and licences

  • SigmaHQ

    "HackTool - HandleKatz Duplicating LSASS Handle" by Bhabesh Raj (rule), @thefLinkk (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_access/proc_access_win_hktl_handlekatz_lsass_access.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: HackTool - HandleKatz Duplicating LSASS Handle",
entity page, dataset version ref-1374790d2ce4, updated 2023-11-28T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/b1bd3a59-c1fd-4860-9f40-4dd161a7d1f5 (accessed 2026-11-03).
Underlying source: SigmaHQ rule b1bd3a59-c1fd-4860-9f40-4dd161a7d1f5, 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.