""ET TROJAN TA453 Related Activity (FTP)""

SID: 2034890

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_01_11, deployment Perimeter, signature_severity Major, updated_at 2022_01_11

Reference:

• Link

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 21

Flow: established,to_server

Contents:

• Value: "VICTIM-PC__"

• Value: "/screen/"

• Value: ".jpg"

Within:

PCRE:

Special Options:

• fast_pattern

source