""ET TROJAN UAC-0114/Winter Vivern CnC Activity""
SID: 2044064
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2023_02_02, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_02_02
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: "/usersfolders/S-1-5-21-"
Within:
PCRE:
Special Options:
-
http_method
-
http_uri
-
fast_pattern