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The public catalogue of detection rules. Every entry carries its source, the identifier it had there, its licence and its ATT&CK mapping.

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Medium>Splunk security content

Windows Netspy Network Scanner Execution

Detects usage of the Netspy scanner on an endpoint. Netspy is a lightweight, fast, and cross-platform tool designed for internal network segment discovery. The tool supports various protocols, including ICMP, ARP, TCP, and UDP, allowing users to scan for active hosts and services within predefined IP ranges.

ATT&CK coverage

Reconnaissance

T1595Active Scanning 31 detections cover this technique

Discovery

T1018Remote System Discovery 50 detections cover this technique

Detection requirements

Log source category: crowdstrike_processrollup2 sysmon_eventid_1 windows_event_log_security_4688

Detection logic

Published to signed-in readers

The query as its source wrote it, its canonical form, and the content hash that pins this exact revision.

Provenance

Where this detection came from, and what you may do with it.

At source: Open at source
Written by: Raven Tait
Splunk
Licence: Apache-2.0Read the licence
Published: Aug 26, 2026
Version: 1