Antivirus Exploitation Framework Detection — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems), Arnim Rupp. Source status: stable; severity: critical. Source dates: 2018-09-09 / 2024-11-02.

{
  "category": "antivirus"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 73764c7511d591f48e8f68ad264b4cbf5cd043b4ed8d4184632d2373a684d2db

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: Antivirus Exploitation Framework Detection
id: 238527ad-3c2c-4e4f-a1f6-92fd63adb864
status: stable
description: |
    Detects a highly relevant Antivirus alert that reports an exploitation framework.
    This event must not be ignored just because the AV has blocked the malware but investigate, how it came there in the first place.
references:
    - https://www.nextron-systems.com/?s=antivirus
    - https://www.virustotal.com/gui/file/925b0b28472d4d79b4bf92050e38cc2b8f722691c713fc28743ac38551bc3797
    - https://www.virustotal.com/gui/file/8f8daabe1c8ceb5710949283818e16c4aa8059bf2ce345e2f2c90b8692978424
    - https://www.virustotal.com/gui/file/d9669f7e3eb3a9cdf6a750eeb2ba303b5ae148a43e36546896f1d1801e912466
author: Florian Roth (Nextron Systems), Arnim Rupp
date: 2018-09-09
modified: 2024-11-02
tags:
    - attack.execution
    - attack.t1203
    - attack.command-and-control
    - attack.t1219.002
logsource:
    category: antivirus
detection:
    selection:
        Signature|contains:
            - 'Backdoor.Cobalt'
            - 'Brutel'
            - 'BruteR'
            - 'CobaltStr'
            - 'CobaltStrike'
            - 'COBEACON'
            - 'Cometer'
            - 'Exploit.Script.CVE'
            - 'IISExchgSpawnCMD'
            - 'Metasploit'
            - 'Meterpreter'
            - 'MeteTool'
            - 'Mpreter'
            - 'MsfShell'
            - 'PowerSploit'
            - 'Razy'
            - 'Rozena'
            - 'Sbelt'
            - 'Seatbelt'
            - 'Sliver'
            - 'Swrort'
    condition: selection
falsepositives:
    - Unlikely
level: critical

Original YAML and metadata in JSON

False positives

• Unlikely

Source references

• https://www.nextron-systems.com/?s=antivirus
• https://www.virustotal.com/gui/file/925b0b28472d4d79b4bf92050e38cc2b8f722691c713fc28743ac38551bc3797
• https://www.virustotal.com/gui/file/8f8daabe1c8ceb5710949283818e16c4aa8059bf2ce345e2f2c90b8692978424
• https://www.virustotal.com/gui/file/d9669f7e3eb3a9cdf6a750eeb2ba303b5ae148a43e36546896f1d1801e912466