""ET TROJAN NimPlant Sending Command (Inbound)""

SID: 2044348

Revision: 1

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_02_27, deployment Perimeter, signature_severity Major, updated_at 2023_02_27

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "200"

  • Value: "|7b 22|id|22 3a 22|"

  • Value: "|22 2c 22|k|22 3a 22|"

Within:

PCRE: "/^(?:[a-zA-Z]{8})\x22\x2c\x22k\x22\x3a\x22/R"

Special Options:

  • http_stat_code

  • file_data

source