Network Reconnaissance Activity — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2022-02-07 / not supplied.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: c055725b85cc3863e0238d3d2493cce8543e6f1cd62db1ce0afc53e909f959d2

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Network Reconnaissance Activity
id: e6313acd-208c-44fc-a0ff-db85d572e90e
status: test
description: Detects a set of suspicious network related commands often used in recon stages
references:
    - https://thedfirreport.com/2022/02/07/qbot-likes-to-move-it-move-it/
author: Florian Roth (Nextron Systems)
date: 2022-02-07
tags:
    - attack.discovery
    - attack.t1087
    - attack.t1082
    - car.2016-03-001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - 'nslookup'
            - '_ldap._tcp.dc._msdcs.'
    condition: selection
falsepositives:
    - False positives depend on scripts and administrative tools used in the monitored environment
level: high

Original YAML and metadata in JSON

False positives

• False positives depend on scripts and administrative tools used in the monitored environment

Source references

• https://thedfirreport.com/2022/02/07/qbot-likes-to-move-it-move-it/