YARA Rule: kittykatkrew.yar

Sponsored by Hudson Rock – Use Hudson Rock's free cybercrime intelligence tools to learn how Infostealer infections are leading to ransomware attacks

Valid Rule

/*
kittykatkrew ransomware
*/

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

    strings:
        $name1 = "kittykatkrew" ascii nocase
        $name2 = "KITTYKATKREW" ascii
        $onion  = "kittykatkrew.onion" ascii nocase

    condition:
        any of them
}