Windows_Ransomware_Hellokitty_4b668121

rule Windows_Ransomware_Hellokitty_4b668121 {
    meta:
        author = "Elastic Security"
        id = "4b668121-cc21-4f0b-b0fc-c2b5b4cb53e8"
        fingerprint = "834316ce0f3225b1654b3c4bccb673c9ad815e422276f61e929d5440ca51a9fa"
        creation_date = "2021-05-03"
        last_modified = "2021-08-23"
        threat_name = "Windows.Ransomware.Hellokitty"
        reference_sample = "9a7daafc56300bd94ceef23eac56a0735b63ec6b9a7a409fb5a9b63efe1aa0b0"
        severity = 100
        arch_context = "x86, arm64"
        scan_context = "file, memory"
        license = "Elastic License v2"
        os = "windows"
    strings:
        $a1 = "(%d) [%d] %s: STOP DOUBLE PROCESS RUN" ascii fullword
        $a2 = "(%d) [%d] %s: Looking for folder from cmd: %S" ascii fullword
        $a3 = "(%d) [%d] %s: ERROR: Failed to encrypt AES block" ascii fullword
        $a4 = "gHelloKittyMutex" wide fullword
        $a5 = "/C ping 127.0.0.1 & del %s" wide fullword
        $a6 = "Trying to decrypt or modify the files with programs other than our decryptor can lead to permanent loss of data!"
        $a7 = "read_me_lkdtt.txt" wide fullword
        $a8 = "If you want to get it, you must pay us some money and we will help you." wide fullword
    condition:
        5 of them
}