""ET TROJAN Observed Kryptic Fake App Domain (cctvv2023 .9hlw .com in TLS SNI)""

SID: 2054584

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2024_07_18, deployment Perimeter, signature_severity Major, updated_at 2024_07_18

Reference:

  • md5

  • c8e6cd1fb6f5dfe1ab548024a7f67043

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 12|cctvv2023.9hlw.com"

Within: 8

PCRE:

Special Options:

  • fast_pattern

source