""ET EXPLOIT Possible WebShell GIF Upload""
SID: 2027736
Revision: 2
Class Type: attempted-admin
Metadata: attack_target Web_Server, created_at 2019_07_22, deployment Perimeter, performance_impact Low, signature_severity Major, tag WebShell, updated_at 2019_07_22
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: any
Destination Network: $HTTP_SERVERS
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: "POST"
-
Value: "GIF89a" Depth: 6
-
Value: "<%eval|20|request|28 22|"
Within:
PCRE:
Special Options:
-
http_method
-
http_client_body
-
http_client_body
-
fast_pattern