""ET TROJAN NORTHSTAR Client CnC Checkin""
SID: 2030188
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2020_05_19, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2020_05_19
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: "GET"
-
Value: "/smanage.php?sid=" Depth: 17
-
Value: !"Referer"
-
Value: !"User-Agent"
Within:
PCRE: "/(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{4})$/U"
Special Options:
-
http_method
-
fast_pattern
-
http_uri
-
http_header
-
http_header