""ET TROJAN [ANY.RUN] Win32/Stealc Checkin (POST)""

SID: 2047625

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_11, deployment Perimeter, deployment SSLDecrypt, malware_family Stealc, performance_impact Low, confidence High, signature_severity Critical, updated_at 2023_12_28

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: "|2d 2d|" Depth: 2

  • Value: "Content|2d|Disposition|3a 20|form|2d|data|3b 20|name|3d 22|hwid|22 0d 0a|"

  • Value: "Content|2d|Disposition|3a 20|form|2d|data|3b 20|name|3d 22|build|22|"

  • Value: "Content-Type|3a 20|multipart|2f|form|2d|data|3b 20|boundary|3d|"

  • Value: !"Referer|3a 20|"

Within:

PCRE: "/^[a-zA-Z0-9]{20}$/R"

Special Options:

  • http_method

  • http_client_body

  • http_client_body

  • http_client_body

  • http_header

  • http_header

source