cert_blocklist_4f5a9bf75da76b949645475473793a7d

rule cert_blocklist_4f5a9bf75da76b949645475473793a7d {
    meta:
        author      = "ReversingLabs"
        source      = "ReversingLabs"
        status      = "RELEASED"
        sharing     = "TLP:WHITE"
        category    = "INFO"
        description = "Certificate used for digitally signing malware."

    condition:
        uint16(0) == 0x5A4D and
        for any i in (0..pe.number_of_signatures): (
            pe.signatures[i].subject contains "EXEC CONTROL LIMITED" and
            pe.signatures[i].serial == "4f:5a:9b:f7:5d:a7:6b:94:96:45:47:54:73:79:3a:7d" and
            1553817600 <= pe.signatures[i].not_after
        )
}