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    CRPx0 Pre-Encryption Chunked Exfil via relay.php ~512KB POSTs

    avatar
    GlassDiceBearhttps://www.dicebear.comhttps://creativecommons.org/publicdomain/zero/1.0/„Glass” (https://www.dicebear.com) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)
    Ibrahim Saud@tektrix
    •updated Sep 14, 2026•1•0•1

    Detects anomalous, repeated 512KB multipart POST requests sent to a 'relay.php' endpoint, indicative of bulk data exfiltration performed by the CRPx0 ransomware prior to file encryption.

    YARA-L

    Tags

    T1041 - Exfiltration Over C2 ChannelT1030 - Data Transfer Size LimitsT1071.001 - Web ProtocolsTA0010 - ExfiltrationNetwork Data TransferData ExfiltrationHTTP RequestNetwork GenericGeneric Network Log

    Found in

    • CRPx0 ClickFix Ransomware Technical AnalysisLast updated Sep 9, 2026
    • CRPx0 ClickFix Ransomware Technical AnalysisLast updated Sep 9, 2026
    • CRPx0 ClickFix Ransomware Technical AnalysisLast updated Sep 9, 2026
    • CRPx0 ClickFix Ransomware Technical AnalysisLast updated Sep 9, 2026

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