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YARA Rule: 8base.yar

Group:
Valid Rule

/*
8BASE ransomware (Phobos variant)
*/

rule _8BASE_Ransomnote
{
    meta:
        author = "ransomware.live"
        family = "ransomware.8base"
        description = "Detects 8BASE ransomware ransom note"
        date = "2026-05-04"
        severity = 7
        score = 70

    strings:
        $s1 = "8BASE" ascii nocase
        $s2 = "8base" ascii nocase
        $s3 = "8base.onion" ascii nocase

    condition:
        any of them
}

rule _8BASE_PE
{
    meta:
        author = "ransomware.live"
        family = "ransomware.8base"
        description = "Detects 8BASE ransomware executable (Phobos-based)"
        date = "2026-05-04"
        severity = 9
        score = 90

    strings:
        $s1 = "8BASE" ascii wide
        $s2 = ".8base" ascii nocase
        $s3 = "8base.onion" ascii

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