""ET TROJAN Sidecopy APT Related Activity (POST)""

SID: 2044645

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_03_16, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, updated_at 2023_03_16

Reference:

  • md5

  • 30e8c453d72000d647435d92ffa94616

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: !".asp"

  • Value: !".php"

  • Value: !".htm"

  • Value: "anvaro=|25 32 30|" Depth: 10

  • Value: !"Referer|3a 20|"

  • Value: !"User-Agent|3a 20|"

Within:

PCRE: "/\r\nContent-Type\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]+\r\nContent-Length\x3a\x20[^\r\n]+\r\nExpect\x3a\x20[^\r\n]+\r\n/Hm"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_uri

  • fast_pattern

  • http_client_body

  • http_header

  • http_header

source