""ET TROJAN Win32/Unknown Stealer CnC Exfil (POST)""

SID: 2047615

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_08_10, deployment Perimeter, confidence High, signature_severity Critical, updated_at 2023_08_10

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: "|50 4b|" Depth: 2

  • Value: "/cookies.sqlite"

  • Value: "logins.json"

  • Value: "Login Data"

  • Value: !"User-Agent|3a 20|"

Within:

PCRE: "/(?:[a-z0-9]{8})\x2d(?:[a-z0-9]{4})\x2d(?:[a-z0-9]{4})\x2d(?:[a-z0-9]{4})\x2d(?:[a-z0-9]{12})\x2etxt/P"

Special Options:

  • http_method

  • http_client_body

  • http_client_body

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_header

source