""ET TROJAN Win32/Bisonal RC4 Encrypted 8 Byte Static CnC Checkin""
SID: 2025923
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_07_31, deployment Perimeter, malware_family Bisonal, performance_impact Low, signature_severity Major, updated_at 2018_07_31
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: "|81 b2 a8 97 7e a3 1b 91|" Depth: 8
-
Value: !"Referer|3a|"
-
Value: !"Accept"
Within:
PCRE:
Special Options:
-
http_method
-
http_client_body
-
fast_pattern
-
http_header
-
http_header