""ET TROJAN Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)""

SID: 2029846

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Any, attack_target Client_Endpoint, created_at 2020_04_09, deployment Perimeter, signature_severity Minor, updated_at 2020_04_09

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

  • Value: "|0d 0a|PK"

  • Value: "Passwords.txt"

Within:

PCRE:

Special Options:

  • http_method

  • http_client_body

  • http_client_body

  • http_client_body

  • nocase

  • fast_pattern

source