""ET TROJAN Qwerty Stealer Data Exfiltration Attempt M1""

SID: 2055393

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_08_22, deployment Perimeter, deployment SSLDecrypt, malware_family Qwerty_Stealer, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_08_22

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: "User-Agent|3a 20|-|0d 0a|"

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

  • Value: "|5c|AppData|5c|Roaming|5c|TestLog|5c 5c|"

  • Value: ".txt|22 0d 0a|"

  • Value: "Content-Type|3a 20|application/octet-stream|0d 0a|"

  • Value: "Content-Transfer-Encoding|3a 20|binary|0d 0a 0d 0a|"

  • Value: "Computer Name|3a 20|"

  • Value: "IP Address|3a 20|"

  • Value: "User Name|3a 20|"

  • Value: "Operating System Version|3a 20|"

  • Value: "Content-Type|3a 20|multipart/form-data|3b 20|boundary|3d 2d 2d 2d 2d|qwerty|0d 0a|"

Within: 50

PCRE:

Special Options:

  • http_method

  • http_header

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_header

source