""ET TROJAN Cobalt Strike Activity (GET)""
SID: 2034528
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2021_11_22, deployment Perimeter, malware_family Cobalt_Strike, signature_severity Major, updated_at 2021_11_22, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1001, mitre_technique_name Data_Obfuscation
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: $HTTP_PORTS
Flow: established,to_server
Contents:
-
Value: "GET"
-
Value: "/api/3"
Within:
PCRE: "/^Accept\x3a\x20[^\r\n]+\r\nHost\x3a\x20[^\r\n]+\r\nCookie\x3a\x20[^\r\n]+\r\nUser-Agent\x3a\x20[^\r\n]+\r\nConnection\x3a\x20[^\r\n]+\r\nCache-Control\x3a\x20[^\r\n]+[\r\n]+$/H"
Special Options:
-
http_method
-
http_uri
-
fast_pattern