""ET TROJAN APT Backspace CnC Beacon""

SID: 2021184

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_06_05, deployment Perimeter, signature_severity Major, tag c2, updated_at 2015_06_05, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel

Reference:

  • md5

  • ddf0981aebeea6ba9abdae6ddf8ed4e2

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

  • Value: "POST"

  • Value: "User-Agent|3a 20|SJZJ (compatible|3b 20|MSIE 6.0|3b 20|Win32)"

  • Value: "HOST|3a 20|"

  • Value: !"Accept"

  • Value: !"Referer|3a|"

Within:

PCRE:

Special Options:

  • http_method

  • http_header

  • http_header

  • http_header

  • http_header

source