""ET TROJAN Possible Outbound WebShell JPEG""
SID: 2027739
Revision: 2
Class Type: trojan-activity
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: $HTTP_SERVERS
Source Port: $HTTP_PORTS
Destination Network: $EXTERNAL_NET
Destination Port: any
Flow: established,from_server
Contents:
-
Value: "200"
-
Value: "|FF D8 FF E0|" Depth: 4
-
Value: "JFIF"
-
Value: "<%eval|20|request|28 22|"
Within: 4
PCRE:
Special Options:
-
http_stat_code
-
file_data
-
fast_pattern