""ET TROJAN Observed Malicious SSL Cert (Maldoc/Zloader CnC)""

SID: 2033318

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_and_Server, created_at 2021_07_13, deployment Perimeter, performance_impact Low, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2021_07_13, 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: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: from_server,established

Contents:

  • Value: "|0f|heavenlygem.com"

  • Value: "|2a|.heavenlygem.com"

Within:

PCRE:

Special Options:

  • nocase

  • fast_pattern

source