""ET EXPLOIT Lexmark Malicious File Upload Detected""

SID: 2044002

Revision: 2

Class Type: trojan-activity

Metadata: affected_product IoT, attack_target IoT, created_at 2023_01_26, deployment Perimeter, signature_severity Major, updated_at 2023_04_06

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow:

Contents:

  • Value: "POST"

  • Value: "/webglue/uploadfile/ImportFaxLogo"

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

  • Value: "filename="

Within: 255

PCRE: "/(?:[\x7e\x60\x24\x26\x2a\x7c\x3b\x27\x22\x3c\x3e\x3f\x21])/Rmi"

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • nocase

  • http_client_body

  • nocase

  • http_client_body

source