""ET TROJAN Win32/Zacom.A CnC Beacon 1""

SID: 2021213

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_06_09, deployment Perimeter, signature_severity Major, tag c2, updated_at 2015_06_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • 25631f5ccec8f155a8760b8568ca22c5

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: ".py"

  • Value: !"Content-Type|3a|"

  • Value: !"Referer|3a|"

  • Value: "Windows NT 5.0|3b|"

Within:

PCRE: "/.py$/U"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

  • http_header

source