""ET TROJAN Observed TA444 Domain in TLS SNI""

SID: 2047747

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_08_24, deployment Perimeter, signature_severity Major, tag SSL_Malicious_Cert, tag TA444, updated_at 2023_08_24, reviewed_at 2024_01_26, former_sid 2855178

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: "commoncome.site"

Within: 1

PCRE: "/^(?:\x00\x0f|.\x2e)commoncome.site/R"

Special Options:

source