Linux_Trojan_BPFDoor_1a7d804b

rule Linux_Trojan_BPFDoor_1a7d804b {
    meta:
        author = "Elastic Security"
        id = "1a7d804b-9d39-4855-abe9-47b72bd28f07"
        fingerprint = "e7f92df3e3929b8296320300bb341ccc69e00d89e0d503a41190d7c84a29bce2"
        creation_date = "2022-05-10"
        last_modified = "2022-05-10"
        threat_name = "Linux.Trojan.BPFDoor"
        reference = "https://www.elastic.co/security-labs/a-peek-behind-the-bpfdoor"
        reference_sample = "76bf736b25d5c9aaf6a84edd4e615796fffc338a893b49c120c0b4941ce37925"
        severity = 100
        arch_context = "x86"
        scan_context = "file, memory"
        license = "Elastic License v2"
        os = "linux"
    strings:
        $a1 = "getshell" ascii fullword
        $a2 = "/sbin/agetty --noclear tty1 linux" ascii fullword
        $a3 = "packet_loop" ascii fullword
        $a4 = "godpid" ascii fullword
        $a5 = "ttcompat" ascii fullword
        $a6 = "decrypt_ctx" ascii fullword
        $a7 = "rc4_init" ascii fullword
        $b1 = { D0 48 89 45 F8 48 8B 45 F8 0F B6 40 0C C0 E8 04 0F B6 C0 C1 }
    condition:
        all of ($a*) or 1 of ($b*)
}