""ET TROJAN Win32/Sarwent Variant CnC Activity""

SID: 2029471

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 2020_02_17, deployment Perimeter, signature_severity Major, updated_at 2020_02_17

Reference:

  • md5

  • 3ddc689e72faa473fa78df7302c708e8

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: "/connect?hwid="

  • Value: "&os="

  • Value: "&bits="

  • Value: "&av="

  • Value: "User-Agent|3a 20|Opera"

Within:

PCRE: "/^Host\x3a\x20[^\r\n]+\r\nConnection\x3a\x20[^\r\n]+\r\nUser-Agent\x3a\x20[^\r\n]+\r\nAccept\x3a\x20[^\r\n]+[\r\n]+$/Hmi"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_uri

  • http_uri

  • http_uri

  • http_header

source