""ET TROJAN Kimsuky Related FTP File Download""

SID: 2034690

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_12_13, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2021_12_13

Reference:

• Link

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 21

Flow: established,to_server

Contents:

• Value: "RETR|20|/board/"

Within:

PCRE: "/[a-z]{8}.(:?psd|dib)/Ri"

Special Options:

• fast_pattern

source