Change logs for security intelligence update version 1.331.2134.0

This page lists newly added and updated threat detections included in security intelligence updates for Microsoft Defender Antivirus and other Microsoft antimalware. If you don’t find the latest security intelligence update version in the selector below, please refresh this page or let us know us know through the feedback smiley.

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Released on

3/1/2021 9:49:40 PM

Added threat detections

Name Severity
Backdoor:Win32/Remcos.MS!MTB severe
PWS:HTML/Phish.RV!MTB severe
Trojan:MSIL/Kryptik.AS!MTB severe
Trojan:MSIL/Kryptik.UC!MTB severe
Trojan:MSIL/Kryptik.WR!MTB severe
Trojan:O97M/CVE-2017-11882.SN!MTB severe
Trojan:O97M/CVE-2017-11882.SW!MTB severe
Trojan:Win32/Trickbot.RM!MTB severe
TrojanDownloader:O97M/EncDoc.TCH!eml severe
TrojanDownloader:O97M/Qakbot.AKO!MTB severe
TrojanDownloader:O97M/Qakbot.QGV!eml severe
TrojanDropper:Win32/CryptedAutoIt.SG!MTB severe
TrojanSpy:Win32/Shevonelo.STA severe

Updated threat detections

Name Severity
Backdoor:Win32/Bazarloader severe
Exploit:O97M/CVE-2017-11882!MTB severe
FriendlyFiles low
Trojan:MSIL/AgentTesla!MTB severe
Trojan:MSIL/Tnega.DR!MTB severe
Trojan:Win32/Hancitor.SS!MTB severe
Trojan:Win32/IRCbot.RH!MTB severe
Trojan:Win32/ProxyChanger!MSR severe
Trojan:Win32/QakBot.MX!MTB severe
Trojan:Win32/SpyNoon.SS!MTB severe
Trojan:Win32/Trickbot!Core severe
Trojan:Win32/Trickbot.GKM!MTB severe
Trojan:Win32/Trickbot.MX!MTB severe
TrojanDownloader:O97M/Dridex.ARJ!MTB severe
TrojanDownloader:O97M/Dridex.SS!MTB severe
TrojanDownloader:O97M/EncDoc.ARJ!MTB severe
TrojanDownloader:O97M/Obfuse.WD!MTB severe