Question malware detected other software

[carlos88]

My question wasn't answered: a Trojan (example: QtWebKit4.dll (Trojan:Win32/Wacatac.C!ml) not identified in the Kaspersky Free full scan with an updated database will also not be recognized and will remain active and hidden in the system, performing operations on files and hackers?

Does real-time protection also require the malware signature (database) used in the scan to protect in real time?

When the malware is in a DLL, what is its active behavior?

[AlexeyK]

1 час назад, carlos88 сказал:

QtWebKit4.dll (Trojan:Win32/Wacatac.C!ml)

Do you understand that MS Defender has not been detecting this file since Friday? Its detection has been added by Kaspersky and some other vendors, but excluded by MS. From the point of view of MS, this file is clean now. If you trust the verdict of MS, you may use this file safely. This detection, which you have already mentioned a hundred times on a dozen forums, is no longer actual.

[harlan4096]

You have been answered at MalwareTIps forum, probably last year while having KFree, it detected and removed the exe file that accompanied that dll file, so the attack was stopped. And that dll file remained there, as I told many times before, as a leftover, not active in memory, and later Defender detected it on demand scan.