Sigma rule: Network Connection Initiated By Regsvr32.EXE

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-41da18209844, updated 2023-09-18T00:00:00.000Z.

Rule

Title: Network Connection Initiated By Regsvr32.EXE
Status: test
Level: medium
Author: Dmitriy Lifanov, oscd.community
Date: 2019-10-25
Modified: 2023-09-18
File: rules/windows/network_connection/net_connection_win_regsvr32_network_activity.yml
Commit: ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects a network connection initiated by "Regsvr32.exe"

Log source

product: windows
category: network_connection

Detection

selection:
    Initiated: 'true'
    Image|endswith: '\regsvr32.exe'
condition: selection

False positives (as the rule lists them)

Unknown

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/network_connection/net_connection_win_regsvr32_network_activity.yml

Sources and licences

SigmaHQ
"Network Connection Initiated By Regsvr32.EXE" by Dmitriy Lifanov, oscd.community (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/network_connection/net_connection_win_regsvr32_network_activity.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Network Connection Initiated By Regsvr32.EXE",
entity page, dataset version ref-41da18209844, updated 2023-09-18T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/c7e91a02-d771-4a6d-a700-42587e0b1095 (accessed 2026-11-03).
Underlying source: SigmaHQ rule c7e91a02-d771-4a6d-a700-42587e0b1095, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.