YARA Rule: fletchen.yar

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Valid Rule

/*
fletchen ransomware
*/

rule fletchen_Ransomnote
{
    meta:
        author = "ransomware.live"
        family = "ransomware.fletchen"
        description = "Detects fletchen ransomware ransom note or artifact"
        date = "2026-05-04"
        severity = 7
        score = 70

    strings:
        $name1 = "fletchen" ascii nocase
        $name2 = "FLETCHEN" ascii
        $onion  = "fletchen.onion" ascii nocase

    condition:
        any of them
}