""ET TROJAN SYNful Knock Cisco IOS Router Implant CnC Beacon (INBOUND)""
SID: 2021785
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2015_09_16, deployment Perimeter, signature_severity Major, tag c2, updated_at 2015_09_16, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel
Reference:
Protocol: tcp
Source Network: any
Source Port: any
Destination Network: $HOME_NET
Destination Port: 80
Flow: established,to_server
Contents:
- Value: "|00 00 00 00|text|00|"
Within:
PCRE:
Special Options: