""ET TROJAN MSIL/PSW.Agent.QJK Stealer Data Exfil Via HTTP""

SID: 2024455

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 2017_07_11, deployment Perimeter, malware_family Unknown, performance_impact Moderate, signature_severity Major, updated_at 2017_07_11

Reference:

  • md5

  • 4bc4b071d9a7e482f3ecf8b2cbe10873

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: "Content-Type|3a 20|multipart/form-data|3b 20|boundary="

  • Value: "Content-Disposition|3a 20|form-data|3b 20|name=|22|file|22 3b 20|filename=|22|"

  • Value: !"User-Agent|3a|"

  • Value: !"Accept"

  • Value: !"Referer|3a|"

Within:

PCRE: "/^(?:(?:Passwords|PCinformation).txt|(?:Data|GrabbedTxtFiles).zip)\x22\r\n/Ri"

Special Options:

  • http_method

  • http_header

  • http_client_body

  • http_header

  • http_header

  • http_header

source