YARA Rule: kairos.yar

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Valid Rule

/*
Kairos ransomware
*/

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

    strings:
        $s1 = "Kairos" ascii nocase
        $s2 = "KAIROS" ascii
        $s3 = "kairos.onion" ascii nocase

    condition:
        any of them
}