""ET TROJAN Rerdom/Asprox CnC Beacon""
SID: 2019760
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2014_11_20, deployment Perimeter, signature_severity Major, tag c2, updated_at 2014_11_20, 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: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: "GET"
-
Value: "/b/pkg/"
Within:
PCRE: "/\/b\/pkg\/[A-Za-z0-9]{14,15}$/U"
Special Options:
-
http_method
-
http_uri