""ET TROJAN Win32/Bisonal Backdoor CnC Activity (POST)""
SID: 2033964
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2021_09_16, deployment Perimeter, deployment SSLDecrypt, malware_family Bisonal, signature_severity Major, updated_at 2022_04_18, reviewed_at 2023_08_22
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: "/post.asp"
-
Value: ".com#.com|0d 0a|"
-
Value: !"Referer|3a 20|"
Within:
PCRE: "/^Host\x3a\x20[^\r\n]+.com#.com/Hmi"
Special Options:
-
http_method
-
http_uri
-
http_header
-
fast_pattern
-
http_header