""ET TROJAN [PTsecurity] MZRevenge Ransomware Server Response""

SID: 2029644

Revision: 3

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2020_03_18, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2020_11_12, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "|0d 0a|Content-Type|3a 20|text/html|3b 20|charset=UTF-8|0d 0a|"

  • Value: "|0d 0a 0d 0a|MZR-"

Within:

PCRE:

Special Options:

  • http_header

  • fast_pattern

source