""ET TROJAN Gasket CnC Checkin""
SID: 2033339
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2021_07_15, deployment Perimeter, malware_family Gasket, performance_impact Low, signature_severity Major, updated_at 2021_07_15
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: "POST"
-
Value: "/cert/trust"
-
Value: "User-Agent|3a 20|Go-http-client"
Within:
PCRE: "/^Host\x3a\x20\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}(?:\:\d{1,5})?$/Hm"
Special Options:
-
http_method
-
fast_pattern
-
http_uri
-
http_header