CVE-2024-50623 Exploitation Attempt - Cleo


Description

Detects exploitation attempt of Cleo's CVE-2024-50623 by looking for a "cmd.exe" process spawning from the Celo software suite with suspicious Powershell commandline.

Query · sigma

selection:
  ParentImage|endswith: \javaw.exe
  ParentCommandLine|contains:
  - Harmony
  - lexicom
  - VersaLex
  - VLTrader
  Image|endswith: \cmd.exe
  CommandLine|contains:
  - powershell
  - ' -enc '
  - ' -EncodedCommand'
  - .Download
condition: selection

Known false positives

  • Unlikely
Raw source CVE-2024-50623 Exploitation Attempt - Cleo · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified.
title: CVE-2024-50623 Exploitation Attempt - Cleo
id: f007b877-02e3-45b7-8501-1b78c2864029
status: experimental
description: |
    Detects exploitation attempt of Cleo's CVE-2024-50623 by looking for a "cmd.exe" process spawning from the Celo software suite with suspicious Powershell commandline.
references:
    - https://www.huntress.com/blog/threat-advisory-oh-no-cleo-cleo-software-actively-being-exploited-in-the-wild
author: Tanner Filip, Austin Worline, Chad Hudson, Matt Anderson
date: 2024-12-09
tags:
    - attack.initial-access
    - attack.execution
    - attack.t1190
    - cve.2024-50623
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\javaw.exe'
        ParentCommandLine|contains:
            - 'Harmony'
            - 'lexicom'
            - 'VersaLex'
            - 'VLTrader'
        Image|endswith: '\cmd.exe'
        CommandLine|contains:
            - 'powershell'
            - ' -enc '
            - ' -EncodedCommand'
            - '.Download'
    condition: selection
falsepositives:
    - Unlikely
level: high

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