""ET TROJAN Smurf2 CnC Checkin""

SID: 2025168

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 2017_12_21, deployment Perimeter, signature_severity Major, updated_at 2017_12_21

Reference:

  • md5

  • e2d136bb63edc092d2f3d26885b239d9

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: "User-Agent|3a 20|Mozilla/5.0|0d 0a|"

  • Value: "Accept|3a 20|??"

  • Value: "teststr=" Depth: 8

  • Value: "&testval="

Within:

PCRE:

Special Options:

  • http_method

  • http_header

  • http_header

  • nocase

  • http_client_body

  • fast_pattern

  • nocase

  • http_client_body

source