""ET TROJAN Observed Teal Kurma Domain (alhurra .online in TLS SNI)""

SID: 2049517

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_12_06, deployment Perimeter, signature_severity Major, tag SSL_TLS_SNI, updated_at 2023_12_06, 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: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 443

Flow: established,to_server

Contents:

  • Value: "|16|"

  • Value: "|01|"

  • Value: "|00 00|"

  • Value: "|00|"

  • Value: "alhurra.online"

Within: 1

PCRE: "/^(?:\x00\x0e|.\x2e)alhurra.online/R"

Special Options:

source