/*
Knight ransomware (rebranded Cyclops)
*/

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

    strings:
        $s1 = "knight_l" ascii nocase
        $s2 = "How To Restore Your Files.txt" ascii nocase
        $s3 = "Knight" ascii
        $s4 = ".knight_l" ascii

    condition:
        2 of them
}