""ET TROJAN MSIL/TrojanDownloader.Agent.JVN CnC Checkin""

SID: 2035368

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_03_01, deployment Perimeter, signature_severity Major, updated_at 2022_03_01

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: "/?username=" Depth: 11

  • Value: "Keep-Alive"

  • Value: !"Referer|3a 20|"

  • Value: !"User-Agent|3a 20|"

  • Value: !"Accept"

Within:

PCRE: "/^Connection\x3a\x20Keep-Alive/Hmi"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_header

  • http_header

  • http_header

  • http_header

source