""ET TROJAN Possible Compromised Host AnubisNetworks Sinkhole Cookie Value btst""
SID: 2037771
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2022_07_15, deployment Perimeter, signature_severity Major, updated_at 2023_05_19, reviewed_at 2023_09_01
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "Cookie|3a 20|btst="
-
Value: "btst=" Depth: 5
Within:
PCRE: "/^btst=[a-f0-9]{32}\x7c\d{1,3}.\d{1,3}.\d{1,3}.\d{1,3}\x7c/C"
Special Options:
-
fast_pattern
-
http_cookie