""ET TROJAN Suspected Trojan-Proxy Web Socket Connection Activity""
SID: 2051982
Revision: 1
Class Type: trojan-activity
Metadata: affected_product Mac_OSX, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_04_10, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2024_04_10
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 6101
Flow: established,to_server
Contents:
-
Value: "GET|20|/strvn|20|"
-
Value: "|0d 0a|Upgrade|3a 20|websocket|0d 0a|"
Within:
PCRE: "/Sec-WebSocket-Version\x3a\x20[^\r\n]+\r\nSec-WebSocket-Key[^\r\n]+\r\n\r\n/"
Special Options:
- fast_pattern