/*
LockBit ransomware (v1)
*/

rule LockBit_Ransomnote
{
    meta:
        author = "ransomware.live"
        family = "ransomware.lockbit"
        description = "Detects LockBit v1 ransom note (RESTORE-MY-FILES.txt)"
        date = "2026-05-04"
        severity = 7
        score = 70

    strings:
        $note = "RESTORE-MY-FILES.txt" ascii nocase
        $brand = "LockBit Ransomware" ascii nocase
        $ext = ".abcd" ascii

    condition:
        2 of them
}

rule LockBit_PE
{
    meta:
        author = "ransomware.live"
        family = "ransomware.lockbit"
        description = "Detects LockBit v1 ransomware executable"
        date = "2026-05-04"
        severity = 9
        score = 90

    strings:
        $s1 = "RESTORE-MY-FILES" ascii wide
        $s2 = "LockBit" ascii wide
        $s3 = "\x00--path\x00" ascii

    condition:
        uint16(0) == 0x5A4D and 2 of them
}