Sigma rule: Potential CommandLine Obfuscation Using Unicode Characters

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-423a8af39672, updated 2024-09-05T00:00:00.000Z.

Rule

Title
Potential CommandLine Obfuscation Using Unicode Characters
Status
test
Level
medium
Author
frack113, Florian Roth (Nextron Systems)
Date
2022-01-15
Modified
2024-09-05
File
rules-threat-hunting/windows/process_creation/proc_creation_win_susp_cli_obfuscation_unicode.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects potential CommandLine obfuscation using unicode characters.
Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit.

Log source

product
windows
category
process_creation

Detection

selection:
    CommandLine|contains:
        # spacing modifier letters that get auto-replaced
        - 'ˣ' # 0x02E3
        - '˪' # 0x02EA
        - 'ˢ' # 0x02E2
        # Forward slash alternatives
        - '∕' # 0x22FF
        - '⁄' # 0x206F
        # Hyphen alternatives
        - '―' # 0x2015
        - '—' # 0x2014
        # Whitespace that don't work as path separator
        - ' ' # 0x00A0
        # Other
        - '¯'
        - '®'
        - '¶'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.stealth
  • attack.t1027
  • detection.threat-hunting

MITRE ATT&CK ids this rule names

Related rules

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-threat-hunting/windows/process_creation/proc_creation_win_susp_cli_obfuscation_unicode.yml

Sources and licences

  • SigmaHQ

    "Potential CommandLine Obfuscation Using Unicode Characters" by frack113, Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-threat-hunting/windows/process_creation/proc_creation_win_susp_cli_obfuscation_unicode.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: Potential CommandLine Obfuscation Using Unicode Characters",
entity page, dataset version ref-423a8af39672, updated 2024-09-05T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/e0552b19-5a83-4222-b141-b36184bb8d79 (accessed 2026-11-03).
Underlying source: SigmaHQ rule e0552b19-5a83-4222-b141-b36184bb8d79, 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.