HackTool - Empire UserAgent URI Combo — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2020-07-13 / 2024-02-26.

{
  "category": "proxy"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 8d6f323aadd24ccb30f0027dce5b2443784d13160769bad48196c1798784bee5

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: HackTool - Empire UserAgent URI Combo
id: b923f7d6-ac89-4a50-a71a-89fb846b4aa8
status: test
description: Detects user agent and URI paths used by empire agents
references:
    - https://github.com/BC-SECURITY/Empire
author: Florian Roth (Nextron Systems)
date: 2020-07-13
modified: 2024-02-26
tags:
    - attack.command-and-control
    - attack.t1071.001
logsource:
    category: proxy
detection:
    selection:
        c-useragent: 'Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko'
        cs-uri:
            - '/admin/get.php'
            - '/news.php'
            - '/login/process.php'
        cs-method: 'POST'
    condition: selection
falsepositives:
    - Valid requests with this exact user agent to server scripts of the defined names
level: high

Original YAML and metadata in JSON

False positives

• Valid requests with this exact user agent to server scripts of the defined names

Source references

• https://github.com/BC-SECURITY/Empire