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Question malware detected Defender for Windows 10
Why did my Microsoft Defender detect a malicious file in AppData\Roaming\Secure\QtWebKit4.dll (Trojan:Win32/Wacatac.C!ml) during a full scan and the Kaspersky Free and Malwarebytes Free scans didn't...
Hi cloudff7,
Defender correctly detected a real trojan (Wacatac.C!ml) in QtWebKit4.dll.
The file Caller.exe is linked to Rhadamanthys, a known password-stealing malware.
Other antivirus tools likely missed it because of slower signature updates.
Recommended way would be to run a Microsoft Defender Offline scan and change all passwords. Also review startup entries and scheduled tasks for persistence.