Sigma rule: Bitsadmin to Uncommon IP Server Address

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-dbf60b466241, updated 2022-08-24T00:00:00.000Z.

Rule

Title
Bitsadmin to Uncommon IP Server Address
Status
test
Level
high
Author
Florian Roth (Nextron Systems)
Date
2022-06-10
Modified
2022-08-24
File
rules/web/proxy_generic/proxy_ua_bitsadmin_susp_ip.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects Bitsadmin connections to IP addresses instead of FQDN names

Log source

category
proxy

Detection

selection:
    c-useragent|startswith: 'Microsoft BITS/'
    cs-host|endswith:
        - '1'
        - '2'
        - '3'
        - '4'
        - '5'
        - '6'
        - '7'
        - '8'
        - '9'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.command-and-control
  • attack.execution
  • attack.stealth
  • attack.t1071.001
  • attack.persistence
  • attack.t1197
  • attack.s0190

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/web/proxy_generic/proxy_ua_bitsadmin_susp_ip.yml

Sources and licences

  • SigmaHQ

    "Bitsadmin to Uncommon IP Server Address" by Florian Roth (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/web/proxy_generic/proxy_ua_bitsadmin_susp_ip.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: Bitsadmin to Uncommon IP Server Address",
entity page, dataset version ref-dbf60b466241, updated 2022-08-24T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/8ccd35a2-1c7c-468b-b568-ac6cdf80eec3 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 8ccd35a2-1c7c-468b-b568-ac6cdf80eec3, 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.