""ET TROJAN CommentCrew Possible APT c2 communications sleep3""
SID: 2016480
Revision: 3
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2013_02_22, deployment Perimeter, signature_severity Major, tag c2, updated_at 2014_09_19, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: 80
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
- Value: "<!--czoxMzc=--!>"
Within:
PCRE:
Special Options:
- file_data