""ET TROJAN JS/TrojanDownloader.Agent.TXV CnC Activity""

SID: 2035271

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 2022_02_22, deployment Perimeter, signature_severity Major, updated_at 2022_02_22, reviewed_at 2024_06_26

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: "/postUP.php"

  • Value: "Mozilla/4.0 (compatible|3b 20|MSIE 7.0|3b 20|Windows NT 6.0)"

  • Value: "keep-alive"

  • Value: "Content-Type|3a 20|application/x-www-form-urlencoded"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^Connection\x3a\x20keep-alive/Hmi"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

  • http_header

  • http_header

  • http_header

source