""ET TROJAN APT Lurker GET CnC Beacon""
SID: 2021585
Revision: 3
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2015_08_03, deployment Perimeter, signature_severity Major, tag c2, updated_at 2015_08_11, 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: $EXTERNAL_NET
Destination Port: 443
Flow: established,to_server
Contents:
-
Value: "GET /" Depth: 5
-
Value: ".php HTTP/1."
-
Value: !"Accept"
-
Value: !"Referer|3a|"
-
Value: "HOST|3a|"
Within: 5
PCRE: "/^[^\r\n]+\r\nUser-Agent\x3a[^\r\n]+\r\n(?:\r\n)?$/Rmi"
Special Options:
- fast_pattern