PUA - Nmap/Zenmap Execution

Status: test
Severity: medium
Log source: category process_creation, product windows
Author: frack113
Source: github.com/SigmaHQ/sigma

Detects usage of namp/zenmap. Adversaries may attempt to get a listing of services running on remote hosts, including those that may be vulnerable to remote software exploitation

Known false positives

Legitimate administrator activity

MITRE ATT&CK coverage

Tactic	Techniques
Discovery	`T1046` Network Service Discovery

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 1: Process creation

Rule body

title: PUA - Nmap/Zenmap Execution
id: f6ecd1cf-19b8-4488-97f6-00f0924991a3
status: test
description: Detects usage of namp/zenmap. Adversaries may attempt to get a listing of services running on remote hosts, including those that may be vulnerable to remote software exploitation
references:
    - https://nmap.org/
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1046/T1046.md#atomic-test-3---port-scan-nmap-for-windows
author: frack113
date: 2021-12-10
modified: 2023-12-11
tags:
    - attack.discovery
    - attack.t1046
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Image|endswith:
              - '\nmap.exe'
              - '\zennmap.exe'
        - OriginalFileName:
              - 'nmap.exe'
              - 'zennmap.exe'
    condition: selection
falsepositives:
    - Legitimate administrator activity
level: medium

Stages and Predicates

Stage 0: `condition`

selection

Stage 1: `selection`

selection:
    - Image|endswith:
          - '\nmap.exe'
          - '\zennmap.exe'
    - OriginalFileName:
          - 'nmap.exe'
          - 'zennmap.exe'

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`Image`	ends_with	`\nmap.exe` `\zennmap.exe`	`field:"Image" kind:ends_with`
`OriginalFileName`	eq	`nmap.exe` `zennmap.exe`	`field:"OriginalFileName" kind:eq`