Emerging Threathighexperimental

CVE-2024-50623 Exploitation Attempt - Cleo

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.

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Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Launch

Tanner Filip, Austin Worline, Chad Hudson, Matt AndersonCreated Mon Dec 09f007b877-02e3-45b7-8501-1b78c28640292024

Emerging Threat

Active Threat

Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic

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