""ET TROJAN Steganographic Encoded WAV File Inbound via HTTP M1""
SID: 2028876
Revision: 2
Class Type: trojan-activity
Metadata: created_at 2019_10_18, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2019_10_18
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,from_server
Contents:
-
Value: "200"
-
Value: "RIFF" Depth: 4
-
Value: "WAVE"
-
Value: "|0B 87 06 53 DF 3A|"
Within: 6
PCRE:
Special Options:
-
http_stat_code
-
file_data
-
fast_pattern