""ET TROJAN SSV Agent CnC Activity""

SID: 2033650

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 2021_08_03, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, updated_at 2021_08_03

Reference:

  • md5

  • db1673a1e8316287cb940725bb6caa68

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "|00 00 00 01 00 00 00 01 00 00 00|" Depth: 11 Offset: 1

Within:

PCRE: "/^.\x00\x00\x00\x01\x00\x00\x00\x01\x00\x00\x00[A-F0-9]{32}/P"

Special Options:

  • fast_pattern

  • http_client_body

source