""ET TROJAN TA453 BellaCiao ASPX Backdoor User-Agent in HTTP Request""
SID: 2045224
Revision: 2
Class Type: trojan-activity
Metadata: affected_product Microsoft_IIS, attack_target Web_Server, created_at 2023_04_27, deployment Perimeter, deployment Internal, deployment SSLDecrypt, malware_family TA453, malware_family BellaCiao, performance_impact Low, confidence High, signature_severity Major, updated_at 2023_05_31, reviewed_at 2023_08_21
Reference:
Protocol: tcp
Source Network: any
Source Port: any
Destination Network: $HOME_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: ".aspx"
-
Value: "User-Agent|3a 20|ruby|40|123|21|"
Within:
PCRE: "/.aspx$/U"
Special Options:
-
http_uri
-
fast_pattern
-
http_header