""ET TROJAN Win32/Stealc/Vidar Stealer Style Headers In HTTP POST""

SID: 2049087

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_11_06, deployment Perimeter, malware_family Stealc, confidence High, signature_severity Critical, updated_at 2023_11_10, reviewed_at 2023_11_06

Reference:

  • md5

  • 15759ca0c25955989b2ff7a8c151f6f8

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: "form-data|3b 20|name=|22|token|22 0d 0a 0d 0a|"

  • Value: "form-data|3b 20|name=|22|build_id|22 0d 0a 0d 0a|"

  • Value: "form-data|3b 20|name=|22|mode|22 0d 0a 0d 0a|"

Within:

PCRE:

Special Options:

  • http_method

  • http_client_body

  • http_client_body

  • http_client_body

source