""ET TROJAN [eSentire] Cobalt Strike Beacon""
SID: 2025635
Revision: 3
Class Type: trojan-activity
Metadata: affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2018_07_03, deployment Perimeter, signature_severity Major, tag c2, updated_at 2022_05_03, 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: "|43 6f 62 61 6c 74 20 53 74 72 69 6b 65 20 42 65 61 63 6f 6e 29 0d 0a|"
-
Value: !"Referer|3a|"
Within:
PCRE:
Special Options:
-
http_method
-
fast_pattern
-
http_header
-
http_header