""ET TROJAN W32/Adrom.Backdoor CnC Beacon""

SID: 2020293

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_01_23, deployment Perimeter, signature_severity Major, tag c2, updated_at 2015_01_23, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

• md5

• 3c2be5202d2d68047c76bdf7e1dfc2be

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "GET"

• Value: ".php?page="

• Value: "&enckey="

• Value: !"Referer|3a|"

Within:

PCRE: "/\x26enckey\x3D[A-F0-9]+$/U"

Special Options:

• http_method

• http_uri

• http_uri

• http_header

source