""ET CURRENT_EVENTS TA427/Kimsuky Domain in TLS SNI""

SID: 2055058

Revision: 1

Class Type: misc-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2024_08_08, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Kimsuky, tag TA427, updated_at 2024_08_09

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 0b|nlsie.store"

Within: 8

PCRE:

Special Options:

  • fast_pattern

source