Potential CVE-2023-36884 Exploitation - URL Marker

Description

Detects a unique URL marker seen being used by RomCom potentially exploiting CVE-2023-36884

Query · sigma

selection:
  cs-method: GET
  c-uri|contains: /MSHTML_C7/
condition: selection

Known false positives

  • Unknown
Raw source Potential CVE-2023-36884 Exploitation - URL Marker · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Potential CVE-2023-36884 Exploitation - URL Marker
id: e59f71ff-c042-4f7a-8a82-8f53beea817e
status: test
description: Detects a unique URL marker seen being used by RomCom potentially exploiting CVE-2023-36884
references:
    - https://blogs.blackberry.com/en/2023/07/romcom-targets-ukraine-nato-membership-talks-at-nato-summit
author: X__Junior
date: 2023-07-12
tags:
    - attack.command-and-control
    - cve.2023-36884
    - detection.emerging-threats
logsource:
    category: proxy
detection:
    selection:
        cs-method: 'GET'
        c-uri|contains: '/MSHTML_C7/'
    condition: selection
falsepositives:
    - Unknown
level: high

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