""ET TROJAN Observed Puzzlemaker Remote Shell Domain (media-seoengine .com in TLS SNI)""

SID: 2033127

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_and_Server, created_at 2021_06_09, deployment Perimeter, performance_impact Low, signature_severity Major, tag SSL_Malicious_Cert, updated_at 2021_06_09, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol

Reference:

  • md5

  • d6b850c950379d5ee0f254f7164833e8

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 443

Flow: established,to_server

Contents:

  • Value: "|16|"

  • Value: "|01|"

  • Value: "|00 00 13|media-seoengine.com"

Within: 8

PCRE:

Special Options:

  • fast_pattern

source