YARA Rule: prolock.yar

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Valid Rule

/*
ProLock ransomware
*/

rule ProLock_Ransomnote
{
    meta:
        author = "ransomware.live"
        family = "ransomware.prolock"
        description = "Detects ProLock ransomware ransom note"
        date = "2026-05-04"
        severity = 7
        score = 70

    strings:
        $s1 = "HOW-TO-RECOVER-YOUR-FILES.txt" ascii nocase
        $s2 = "ProLock" ascii nocase
        $s3 = ".proLock" ascii
        $s4 = ".pr0Lock" ascii

    condition:
        any of them
}