""ET TROJAN SideCopy APT Related Backdoor Sending System Information (POST)""

SID: 2044540

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_03_09, deployment Perimeter, confidence High, signature_severity Major, updated_at 2023_03_09

Reference:

  • md5

  • 2e19b7a2bbdc8082024d259e27e86911

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: "/user_details"

  • Value: "User-Agent|3a 20|cpp-httplib/"

  • Value: "name=|22|ID|22 0d 0a|"

  • Value: "name=|22|Vesrion|22 0d 0a|"

  • Value: "name=|22|AV|22 0d 0a|"

  • Value: "name=|22|OS|22 0d 0a|"

  • Value: "boundary=--cpp-httplib-multipart-"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^Content-Type\x3a\x20[^\r\n]+boundary=--cpp-httplib-multipart-/Hmi"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_header

  • http_header

source