Sigma rule: Suspicious Windows ANONYMOUS LOGON Local Account Created

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-a3684825e2fe, updated 2022-10-09T00:00:00.000Z.

Rule

Title
Suspicious Windows ANONYMOUS LOGON Local Account Created
Status
test
Level
high
Author
James Pemberton / @4A616D6573
Date
2019-10-31
Modified
2022-10-09
File
rules/windows/builtin/security/win_security_susp_local_anon_logon_created.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the creation of suspicious accounts similar to ANONYMOUS LOGON, such as using additional spaces. Created as an covering detection for exclusion of Logon Type 3 from ANONYMOUS LOGON accounts.

Log source

product
windows
service
security

Detection

selection:
    EventID: 4720
    SamAccountName|contains|all:
        - 'ANONYMOUS'
        - 'LOGON'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.persistence
  • attack.t1136.001
  • attack.t1136.002

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/builtin/security/win_security_susp_local_anon_logon_created.yml

Sources and licences

  • SigmaHQ

    "Suspicious Windows ANONYMOUS LOGON Local Account Created" by James Pemberton / @4A616D6573 (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/builtin/security/win_security_susp_local_anon_logon_created.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: Suspicious Windows ANONYMOUS LOGON Local Account Created",
entity page, dataset version ref-a3684825e2fe, updated 2022-10-09T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/1bbf25b9-8038-4154-a50b-118f2a32be27 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 1bbf25b9-8038-4154-a50b-118f2a32be27, 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.