""ET TROJAN RAZR Ransomware CnC Checkin""

SID: 2055401

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_08_22, deployment Perimeter, malware_family RAZR_Ransomware, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_08_22

Reference:

  • md5

  • a1160fa83f4b7247a10c6476449a2719

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: "/c2/receiver"

  • Value: "User-Agent|3a 20|TLD13Browser/12.0|0d 0a|"

  • Value: "|7b 22|id|22 3a 20 22|" Depth: 8

  • Value: "|22 2c 20 22|iv|22 3a 20 22|"

  • Value: "|22 2c 20 22|key|22 3a 20 22|"

  • Value: "|22 7d|"

  • Value: "Content-Type|3a 20|application/json|0d 0a|"

Within:

PCRE: "/\x22\x2c\x20\x22key\x22\x3a\x20\x22[a-f0-9]{64}/P"

Special Options:

  • http_method

  • http_uri

  • http_header

  • http_client_body

  • http_client_body

  • http_client_body

  • http_client_body

  • http_header

source