""ET TROJAN Win32/frebniis IIS Backdoor Trigger Attempt M2""
SID: 2044232
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Web_Server, created_at 2023_02_16, deployment Perimeter, deployment Internal, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_04_03
Reference:
Protocol: tcp
Source Network: any
Source Port: any
Destination Network: $HOME_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: "POST"
-
Value: ".aspx"
-
Value: "7ux4398!"
Within:
PCRE:
Special Options:
-
http_method
-
http_uri
-
http_client_body
-
fast_pattern