""ET TROJAN CryptoLuck / YafunnLocker Ransomware CnC Checkin""

SID: 2023533

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 2016_11_14, deployment Perimeter, malware_family Ransomware, malware_family YafunnLocker, signature_severity Major, tag Ransomware, updated_at 2016_11_15, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact

Reference:

  • md5

  • 59109839de42d2acb44fbd7ff151fe0c

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: ".php?id="

  • Value: "&hi"

  • Value: "User-Agent|3a 20|Mozilla/5.0 (Windows NT 6.1)|0d 0a|"

  • Value: "Content-Disposition|3a 20|form-data|3b 20|name=|22|"

  • Value: !"Referer|3a|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • http_uri

  • http_header

  • http_client_body

  • http_header

source