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At this point, Windows Defender places a DetectionHistory binary file under \ProgramData\Microsoft\Windows Defender\Scans\History\Service\ DetectionHistory\ \, where the name of the file is Windows’ generated DetectionID of the event. exe or not has no impact on the creation of the DetectionHistory file. A sample notification of what one would see is provided below: When a threat is detected, the user is presented first with a notification that Windows Defender has received a hit. To block threats and generate DetectionHistory files, RTP must be turned on in the Windows Security app, under Windows Security > Virus and Threat Protection > Virus and Threat Protection Settings: The creation of these files is an after-product of Windows Defender's real-time protection (RTP) blocking threats, such as Potentially Unwanted Applications (PUAs), viruses, worms, trojans, etc. DetectionHistory Parser, or DHParser, takes data which previously only had limited availability on live systems, into an expanded dataset available for offline viewing.Ī Quick Rundown on Windows DetectionHistory LoggingĭetectionHistory files may be created and found on, at the very least, Windows 10 systems. Whether you are a systems administrator performing regular threat hunting on your network, or you are an analyst examining a system after the smoke of an incident has cleared, Windows Defender’s DetectionHistory logs give an excellent look into what (and who) has been marked as potentially malicious. Immediately apply the skills and techniques learned in SANS courses, ranges, and summits