rule Play_Ransomware {
    meta:
        description = "Detects Play ransomware"
        author = "Security Research"
    strings:
        $s1 = "ReadMe.txt" ascii
        $s2 = ".PLAY" ascii
        $s3 = "ALL YOUR IMPORTANT FILES HAVE BEEN ENCRYPTED" ascii
    condition:
        uint16(0) == 0x5A4D and 2 of them
}