""ET TROJAN Observed Buran Ransomware UA""

SID: 2028991

Revision: 3

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_18, deployment Perimeter, signature_severity Major, tag Ransomware, updated_at 2020_01_02, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "User-Agent|3a 20|fuck u|0d 0a|"

• Value: !"Referer"

Within:

PCRE:

Special Options:

• nocase

• http_header

• http_header

source