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Windows 10 2004/20H2: DumpStack.log.tmp slows down computer
[German]On Windows 10 systems with the version 2004 or 20H2 there is a file DumpStack.log.tmp, which in the worst case slows down the computer. A blog reader pointed this out to me. Here is some information on the topic.
A reader hint
Blog reader Alfred Neumann sent me the hint by e-mail after he ran into the problem on a newly updated computer. In his mail he writes.
Today I updated a computer to Win 20h2 and I noticed a file in c:\: «DumpStack.log.tmp».
Had already seen them before but somehow suppressed to look for them again. Today I looked for it. If you look in the REG under
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CrashControl
sets the value EnableLogFile to 0 you can
a) delete the file C:\DumpStack.log.tmp and
b) the computer runs faster.
Alfred Neumann pointed out that he had mentioned in his comments that TOR starts so slowly. The problem is solved after deleting the file C:\DumpStack.log.tmp.
What is behind DumpStack.log.tmp?
On the Internet, users often ask what is behind the file DumpStack.log.tmp. The whole thing was already introduced in Windows 8 by Microsoft. The file is used when Windows has to write a dump. It is a hidden system file in the root directory C:\ of the Windows drive (see also the explanation in this MS Answers forum thread). Some hints can be found in the posts here and here.
The file cannot be deleted by default because it is under the control of the operating system. Logging to the file can be disabled by a registry operation. To do so, use the key mentioned above:
in a registry editor launched with administrative rights. There two 32-bit DWORD values are entered (see also here) to activate logging:
Malware File DUMPSTACK.LOG.TMP
Hack.Tool/Gen-Patcher
A tool used for hacking purposes such as a software crack/patch or an activation key generator.
SUPERAntiSpyware can safely remove DUMPSTACK.LOG.TMP (Hack.Tool/Gen-Patcher) and protect your computer from spyware, malware, ransomware, adware, rootkits, worms, trojans, keyloggers, bots and other forms of harmful software.
The file DUMPSTACK.LOG.TMP should be immediately removed from your system using SUPERAntiSpyware if the file is found to be harmful after you scan DUMPSTACK.LOG.TMP with SUPERAntiSpyware.
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Country and Region Information
The file DUMPSTACK.LOG.TMP was first observed on Apr 06 2021 and last seen on Apr 06 2021. It has been submitted for analysis from the following 1 geographical locations.
Unique Filenames
The file DUMPSTACK.LOG.TMP (Hack.Tool/Gen-Patcher) has also been observed as the following filenames.
DUMPSTACK.LOG.TMP has an MD5 Hash of : 7BE11FCBB53A9220BE740DE169256C82
The file DUMPSTACK.LOG.TMP was observed with the following file sizes.
Go back to the date this file was detected. Return to the list of malware removed today.
DumpStack.log.tmp
Anyone know what DumpStack.log.tmp is, and why ESET is “unable to open” during a scan?
You might find your answer here. This is most likely a file exclusively used by Windows or you don't have permission to access them. You can try running a scan as administrator, but if you still get that error I wouldn't worry about it.