""ET TROJAN Win32/Vflooder.C Connectivity Check""

SID: 2021337

Revision: 1

Class Type: trojan-activity

Metadata: created_at 2015_06_24, updated_at 2015_06_24

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: "Host|3a 20|google.com|0d 0a|"

  • Value: !"Accept-Encoding|3a 20|"

  • Value: !"Referer|3a|"

Within:

PCRE: "/^Accept\x3a\x20*\/*\r\nUser-Agent\x3a\x20[^\r\n]+\r\nHost\x3a\x20google.com\r\nConnection\x3a\sKeep-Alive\r\n(?:\r\n)?$/H"

Special Options:

  • http_method

  • http_header

  • http_header

  • http_header

source