""ET TROJAN ASPXSPY - Manic Menagerie Variant Activity M1""

SID: 2046753

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Microsoft_IIS, attack_target Web_Server, created_at 2023_07_07, deployment Perimeter, deployment Internal, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_07_07

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: ".aspx"

  • Value: "Backdoor="

  • Value: "Content-Disposition|3a 20|form-data|3b 20|name|3d 22 5f 5f|EVENTTARGET|22 0d 0a 0d 0a|Bin_"

  • Value: "Content-Disposition|3a 20|form-data|3b 20|name|3d 22 5f 5f|FILE|22 0d 0a 0d 0a|"

Within:

PCRE: "/Backdoor\x3d[a-f0-9]{32}/C"

Special Options:

  • http_method

  • http_uri

  • http_cookie

  • http_client_body

  • http_client_body

source