""ET TROJAN MSIL/Khonsri Ransomware CnC Activity""
SID: 2034723
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2021_12_14, deployment Perimeter, performance_impact Low, signature_severity Major, tag Ransomware, updated_at 2021_12_14, 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: "GET"
-
Value: "/zambos_caldo_de_p.txt" Depth: 22
-
Value: !"User-Agent|3a 20|"
Within:
PCRE:
Special Options:
-
http_method
-
http_uri
-
fast_pattern
-
http_header