""ET TROJAN Observed Malicious SSL Cert (Sidewinder CnC)""

SID: 2028566

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_and_Server, created_at 2019_09_10, deployment Perimeter, performance_impact Low, signature_severity Major, tag SSL_Malicious_Cert, tag Sidewinder, updated_at 2019_09_10, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: 443

Destination Network: $HOME_NET

Destination Port: any

Flow: established,from_server

Contents:

  • Value: "|16|"

  • Value: "|0b|"

  • Value: "|0E 34 1C D9 8B 86|"

Within: 10

PCRE:

Special Options:

  • fast_pattern

source