""ET TROJAN [ANY.RUN] Socks5Systemz HTTP C2 Connection M1""

SID: 2049467

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 2023_12_04, deployment Perimeter, malware_family Socks5Systemz, performance_impact Low, confidence High, signature_severity Critical, updated_at 2024_01_17

Reference:

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: "?" Depth: 20

  • Value: "User-Agent|3a 20|Mozilla|2f|5|2e|0|20 28|Windows|3b 20|U|3b 20|MSIE|20|9|2e|0|3b 20|Windows|20|NT|20|9|2e|0|3b 20|en|2d|US|29 0d 0a|"

  • Value: "Host|3a 20|"

  • Value: "."

Within:

PCRE: "/^Host\x3a\x20[^\r\n]+\r\nUser-Agent|0d 0a 0d 0a|/H"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_header

source