""ET TROJAN Shuckworm Backdoor Screenshot Upload Attempt""

SID: 2038571

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_and_Server, created_at 2022_08_19, deployment Perimeter, malware_family Shuckworm, performance_impact Low, signature_severity Major, updated_at 2022_08_19

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: "/index.php"

  • Value: "izTpDFBfSol="

  • Value: "img="

  • Value: !"Referer|3a 20|"

  • Value: !"User-Agent|3a 20|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_client_body

  • http_header

  • http_header

source