Linux_Trojan_BPFDoor_e14b0b79

rule Linux_Trojan_BPFDoor_e14b0b79 {
    meta:
        author = "Elastic Security"
        id = "e14b0b79-a6f3-4fb3-a314-0ec20dcd242c"
        fingerprint = "1c4cb6c8a255840c5a2cb7674283678686e228dc2f2a9304fa118bb5bdc73968"
        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 = "dc8346bf443b7b453f062740d8ae8d8d7ce879672810f4296158f90359dcae3a"
        severity = 100
        arch_context = "x86"
        scan_context = "file, memory"
        license = "Elastic License v2"
        os = "linux"
    strings:
        $a1 = "getpassw" ascii fullword
        $a2 = "(udp[8:2]=0x7255) or (icmp[8:2]=0x7255) or (tcp[((tcp[12]&0xf0)>>2):2]=0x5293)" ascii fullword
        $a3 = "/var/run/haldrund.pid" ascii fullword
        $a4 = "Couldn't install filter %s: %s" ascii fullword
        $a5 = "godpid" ascii fullword
    condition:
        all of them
}