""ET INFO Connectivity Check With Go User-Agent""
SID: 2044794
Revision: 1
Class Type: bad-unknown
Metadata: attack_target Client_Endpoint, created_at 2023_03_28, deployment Perimeter, signature_severity Informational, updated_at 2023_03_28
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: "/ncsi.txt"
-
Value: "User-Agent|3a 20|Go-http-client/"
-
Value: "Host|3a 20|www.msftncsi.com|0d 0a|"
-
Value: !"Referer|3a 20|"
Within:
PCRE:
Special Options:
-
http_method
-
http_uri
-
fast_pattern
-
http_header
-
http_header
-
http_header