""ET CURRENT_EVENTS Tech Support Scam - Windows Firewall M5 2021-08-17""

SID: 2034207

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2021_10_17, deployment Perimeter, signature_severity Minor, tag SocEng, updated_at 2021_10_17, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,from_server

Contents:

  • Value: "200"

  • Value: "|22|>Contact|20|Technical|20|Support|3a 20|<"

  • Value: "|22|>Windows|0a 20 20 20 20 20 20 20 20 20 20 20 20 20 20|was|20|banned|20|for"

  • Value: "PLEASE|20|call|20|us"

Within:

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source