Sigma rule: F5 BIG-IP iControl Rest API Command Execution - Webserver

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-91b467f6c7b6, updated 2023-11-08T00:00:00.000Z.

Rule

Title
F5 BIG-IP iControl Rest API Command Execution - Webserver
Status
test
Level
medium
Author
Nasreddine Bencherchali (Nextron Systems), Thurein Oo
Date
2023-11-08
File
rules/web/webserver_generic/web_f5_tm_utility_bash_api_request.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects POST requests to the F5 BIG-IP iControl Rest API "bash" endpoint, which allows the execution of commands on the BIG-IP

Log source

category
webserver

Detection

selection:
    cs-method: 'POST'
    cs-uri-query|endswith: '/mgmt/tm/util/bash'
condition: selection

False positives (as the rule lists them)

  • Legitimate usage of the BIG IP REST API to execute command for administration purposes

Tags

  • attack.execution
  • attack.t1190
  • attack.initial-access

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/web/webserver_generic/web_f5_tm_utility_bash_api_request.yml

Sources and licences

  • SigmaHQ

    "F5 BIG-IP iControl Rest API Command Execution - Webserver" by Nasreddine Bencherchali (Nextron Systems), Thurein Oo (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/web/webserver_generic/web_f5_tm_utility_bash_api_request.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: F5 BIG-IP iControl Rest API Command Execution - Webserver",
entity page, dataset version ref-91b467f6c7b6, updated 2023-11-08T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/85254a62-22be-4239-b79c-2ec17e566c37 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 85254a62-22be-4239-b79c-2ec17e566c37, 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.