""ET TROJAN [Fireeye] Observed Backdoor.SUNBURST CnC Domain (deftsecurity .com in TLS SNI)""

SID: 2031370

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_12_14, deployment Perimeter, signature_severity Major, updated_at 2022_03_16

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: "deftsecurity.com"

Within: 1

PCRE: "/^(?:\x00\x10|.\x2e)deftsecurity.com/R"

Special Options:

source