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MediumΣSigmaHQ

Potential Regsvr32 Commandline Flag Anomaly

Detects a potential command line flag anomaly related to "regsvr32" in which the "/i" flag is used without the "/n" which should be uncommon.

ATT&CK coverage

Outside the enterprise matrix

T1218.010Regsvr32 40 detections cover this technique

Detection requirements

Log source product: windows
Log source category: process_creation

What the source says

What fires this without an attack behind it

Administrator typo might cause some false positives

References

https://twitter.com/sbousseaden/status/1282441816986484737?s=12

Tagged by the source as

attack.stealth

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.

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Provenance

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

At source: Open at source
Written by: Florian Roth (Nextron Systems)
Licence: Detection Rule License 1.1Read the licence
Published: Aug 26, 2026
Version: 1

See also

3,144 from SigmaHQ 3,618 rated medium