Sigma rule: HackTool - Htran/NATBypass Execution

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-20c600841a46, updated 2023-02-04T00:00:00.000Z.

Rule

Title
HackTool - Htran/NATBypass Execution
Status
test
Level
high
Author
Florian Roth (Nextron Systems)
Date
2022-12-27
Modified
2023-02-04
File
rules/windows/process_creation/proc_creation_win_hktl_htran_or_natbypass.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects executable names or flags used by Htran or Htran-like tools (e.g. NATBypass)

Log source

product
windows
category
process_creation

Detection

selection_img:
    Image|endswith:
        - '\htran.exe'
        - '\lcx.exe'
selection_cli:
    CommandLine|contains:
        - '.exe -tran '
        - '.exe -slave '
condition: 1 of selection_*

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.command-and-control
  • attack.t1090
  • attack.s0040

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_hktl_htran_or_natbypass.yml

Sources and licences

  • SigmaHQ

    "HackTool - Htran/NATBypass Execution" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/process_creation/proc_creation_win_hktl_htran_or_natbypass.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 - Htran/NATBypass Execution",
entity page, dataset version ref-20c600841a46, updated 2023-02-04T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/f5e3b62f-e577-4e59-931e-0a15b2b94e1e (accessed 2026-11-03).
Underlying source: SigmaHQ rule f5e3b62f-e577-4e59-931e-0a15b2b94e1e, 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.