""ET TROJAN Observed Malicious SSL Cert (CobaltStrike CnC)""
SID: 2030466
Revision: 2
Class Type: trojan-activity
Metadata: attack_target Client_and_Server, created_at 2020_07_03, deployment Perimeter, malware_family Cobalt_Strike, performance_impact Low, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2020_07_03, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: 443
Destination Network: $HOME_NET
Destination Port: any
Flow: established,to_client
Contents:
-
Value: "|55 04 03|"
-
Value: "|0f|typiconsult.com"
Within: 16
PCRE:
Special Options:
- fast_pattern