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YARA Rule: hunters.yar

Group:
Valid Rule

/*
Hunters International ransomware (successor to Hive)
*/

rule HuntersInternational_Ransomnote
{
    meta:
        author = "ransomware.live"
        family = "ransomware.hunters"
        description = "Detects Hunters International ransom note"
        date = "2026-05-04"
        severity = 7
        score = 70

    strings:
        $s1 = "Hunters International" ascii nocase
        $s2 = "Contact.txt" ascii nocase
        $s3 = ".hunters" ascii
        $s4 = "hunters55i2i" ascii nocase

    condition:
        any of them
}

rule HuntersInternational_PE
{
    meta:
        author = "ransomware.live"
        family = "ransomware.hunters"
        description = "Detects Hunters International ransomware executable"
        date = "2026-05-04"
        severity = 9
        score = 90

    strings:
        $s1 = "Hunters International" ascii wide
        $s2 = ".hunters" ascii
        $s3 = "hunters55i2i" ascii

    condition:
        uint16(0) == 0x5A4D and 2 of them
}