""ET TROJAN Malicious SSL certificate detected (Possible Sinkhole)""

SID: 2022323

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_and_Server, created_at 2016_01_01, deployment Perimeter, performance_impact Low, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2022_03_24, reviewed_at 2024_04_16, mitre_tactic_id TA0042, mitre_tactic_name Resource_Development, mitre_technique_id T1587, mitre_technique_name Develop_Capabilities

Reference:

  • md5

  • ef5fa2378307338d4e75dece88158d77

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: 443

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "|16|"

  • Value: "|0b|"

  • Value: "|55 04 0a|"

  • Value: "|0a|infosec.jp"

  • Value: "|55 04 03|"

  • Value: "|0e|www.infosec.jp"

  • Value: "snowyowl@jpnsec.com"

Within: 15

PCRE:

Special Options:

source