""ET TROJAN Observed NimPlant UA (NimPlant)""

SID: 2044339

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_02_24, deployment Perimeter, confidence High, signature_severity Major, updated_at 2023_02_24

Reference:

• Link

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "User-Agent|3a 20|NimPlant C2 Client|0d 0a|"

Within:

PCRE:

Special Options:

• http_header

• fast_pattern

source