""ET TROJAN Win32/GandCrab Ransomware CnC Activity M2""

SID: 2025455

Revision: 5

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_03_06, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2018_05_08, reviewed_at 2024_02_13, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact

Reference:

  • md5

  • 8b7d3093c477b2e99effde5065affbd5

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: "Host|3a 20|" Depth: 6

  • Value: "User-Agent|3a 20|Mozilla/5.0 (Windows NT 6.1|3b 20|WOW64"

  • Value: "Content-Length|3a 20|"

  • Value: "|0d 0a|Cache-Control|3a 20|no-cache|0d 0a 0d 0a|"

  • Value: !"Accept"

  • Value: !"Referer|3a|"

Within: 29

PCRE: "/^(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/Psi"

Special Options:

  • http_method

  • http_header

  • http_header

  • http_header

  • http_header

  • http_header

  • http_header

source