""ET TROJAN Win32/Agent.WMN CnC Beacon""

SID: 2020708

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_03_18, deployment Perimeter, former_category MALWARE, signature_severity Major, tag c2, updated_at 2020_05_19, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

• md5

• 3031604f1cf95ee4ccc339c9e4d5b92f

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "POST"

• Value: ".php"

• Value: "Content-Type|3a 20|application/x-www-form-urlencoded|0d 0a|User-Agent" Depth: 59

• Value: "=" Depth: 9 Offset: 4

• Value: "=&"

Within: 2

PCRE: "/^[a-z]{4,12}=(?:[A-Za-z0-9+/]{4})*[A-Za-z0-9+/]{3}=&[a-z]{4,12}=[A-Za-z0-9+/]{4}/P"

Special Options:

• http_method

• http_uri

• http_header

• http_client_body

• http_client_body

source