Detection rules › Sigma
Potential Discovery Activity Via Dnscmd.EXE
Detects an attempt to leverage dnscmd.exe to enumerate the DNS zones of a domain. DNS zones used to host the DNS records for a particular domain.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | No specific technique |
| Discovery | No specific technique |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 1 | Process creation |
| Security-Auditing | Event ID 4688 | A new process has been created. |
Rule body yaml
title: Potential Discovery Activity Via Dnscmd.EXE
id: b6457d63-d2a2-4e29-859d-4e7affc153d1
status: test
description: Detects an attempt to leverage dnscmd.exe to enumerate the DNS zones of a domain. DNS zones used to host the DNS records for a particular domain.
references:
- https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/dnscmd
- https://learn.microsoft.com/en-us/azure/dns/dns-zones-records
- https://lolbas-project.github.io/lolbas/Binaries/Dnscmd/
author: '@gott_cyber'
date: 2022-07-31
modified: 2023-02-04
tags:
- attack.discovery
- attack.execution
logsource:
category: process_creation
product: windows
detection:
selection_img:
Image|endswith: '\dnscmd.exe'
selection_cli:
CommandLine|contains:
- '/enumrecords'
- '/enumzones'
- '/ZonePrint'
- '/info'
condition: all of selection_*
falsepositives:
- Legitimate administration use
level: medium
Stages and Predicates
Stage 0: condition
all of selection_*Stage 1: selection_img
selection_img:
Image|endswith: '\dnscmd.exe'
Stage 2: selection_cli
selection_cli:
CommandLine|contains:
- '/enumrecords'
- '/enumzones'
- '/ZonePrint'
- '/info'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | match |
|
Image | ends_with |
|