""ET TROJAN Loki Locker Ransomware Server Response (Public Key) M1""

SID: 2035512

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_03_17, deployment Perimeter, performance_impact Low, signature_severity Major, tag Ransomware, updated_at 2022_03_17, 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: "200"

  • Value: "Content-Type|3a 20|text|2f|html|3b 20|charset|3d|UTF|2d|8|0d 0a|"

  • Value: "Content-Type|3a 20|text|2f|html|3b 20|charset|3d|UTF|2d|8|0d 0a|"

  • Value: "|7b 22|public|22 3a 22|" Depth: 11

  • Value: "|22 2c 22|message|5f|id|22 3a 22|"

  • Value: !"|22 2c 22|"

Within:

PCRE: "/^Content-Length\x3a\x20(?:1000$|1?[0-9]?[0-9]?[0-9]$)/Hmi"

Special Options:

  • http_stat_code

  • http_header

  • http_header

  • file_data

  • fast_pattern

source