""ET TROJAN Cyborg Ransomware - Downloading Desktop Background""

SID: 2029052

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 2019_11_25, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, tag Ransomware, updated_at 2019_11_25, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact

Reference:

• md5

• 2505b0efde03f5d3c66984e6f7c5bcc1

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: "Server|3a 20|HotCores"

• Value: "Content-Disposition|3a 20|inline|3b 20|filename=|22|Cyborg_DECRYPT.jpg|22 0d 0a|"

• Value: "Content-Type|3a 20|image/jpeg|0d 0a|"

Within:

PCRE:

Special Options:

• http_stat_code

• http_header

• http_header

• http_header

source