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

SID: 2026944

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2019_02_19, deployment Perimeter, performance_impact Low, signature_severity Major, tag SSL_Malicious_Cert, tag Lazarus, updated_at 2019_02_19, 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: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: from_server,established

Contents:

• Value: "|16|"

• Value: "|0b|"

• Value: "|01 90 17 98 AF 94 1C 5E|"

Within: 8

PCRE:

Special Options:

• fast_pattern

source