""ET TROJAN APT28 Zebrocy/Zekapab Reporting to CnC M3""

SID: 2026762

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_01_07, deployment Perimeter, malware_family Zebrocy, malware_family Zekapab, performance_impact Low, signature_severity Major, tag APT28, updated_at 2019_01_07

Reference:

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: "User-Agent|3a 20|Mozilla|20|v5.1|20 28|Windows"

  • Value: "regid=" Depth: 6

  • Value: "%20FIXED,%20TOTAL|3a|%20"

  • Value: "%0AHost%20Name|3a|%20%20%20%20%20%20"

  • Value: "%0AOS%20Name|3a|%20%20%20%20%20"

  • Value: "%0AOS%20Version|3a|%20%20%20%20%20%20"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • fast_pattern

  • http_client_body

source