What is usp10.dll
usp10.dll is a character display script application program interface related file.
Check and file hashes
CRC32: 9DA76CA6
MD5: 06E2 217D 2AF7 50D6 69C8 AACE DD28 090B
SHA1: 7B9A 2876 45A6 A25B 8867 0229 49FE D6E6 816F 6A32
USP10.dll virus principle:
The normal USP10.dll is a file related to the character display script application program interface. It exists in C: \ WINDOWS \ system32 \ USP10.dll, and may exist in C: \ WINDOWS \ system32 \ dllcache \ USP10.dll.
The usp10.dll Trojan virus is started using the window system directory priority.
Let me talk about the priority of this directory first. When the windows system executes a file, it will first find the file to be executed in the "current directory". If the file does not exist in the current directory, it will go to windows \ system32 \ to find it. If it does not exist, it will go to the windows \ directory to find it. If it does not exist, it will go to the directory in the environment variable PATH. This is the priority of the windows directory.
Here we also tell you that an exe file execution will call many DLLs in the system.
After understanding the priority of this directory and calling the system dll when the exe application is executed, many friends may have thought about why this USP10.dll will copy itself to the same directory of each executable file in a large amount, why would it take Named USP10.dll? Yes, copying itself is to make the executable file preempt the directory priority when it is executed, and the name is USP10.dll because there is also a USP10.dll in windows \ system32 \. Many applications will call this dll when it starts. The starting principle of USP10.dll virus. [1]
USP10.dll virus behavior 1 Release usp10.dll to hijack commonly used software to traverse all drives that are not in the directory where the system is located. If you find a file with the exe suffix in the directory, copy the% windir% asks \ 1 file and name it usp10.dll. Firmly grasp the usage habits of ordinary users, resulting in restarting even if the system virus is reinstalled. 2 TerminateProcess is called to end the resident process of the security software. The list is as follows kavstart.exe kissvc.exe kmailmon.exe kpfw32.exe kpfwsvc.exe kwatch. exe
ccenter.exe ras.exe rstray.exe rsagent.exe ravtask.exe ravstub.exe
ravmon.exe ravmond.exe avp.exe 360safebox.exe 360Safe.exe Thunder5.exe
rfwmain.exe rfwstub.exe rfwsrv.exe
3 Add image hijacking to Thunder to prevent Thunder from starting, as follows:
HKLM \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion
\ Image File ExecuTIon OpTIons \ Thunder5.exe
"Debugger" REG_SZ "svchost.exe"
4 Invoke the 360 ​​safe uninstall parameters to uninstall the 360 ​​safe. And by modifying the registry to close 360 ​​monitoring 5 create a thread to close the security software window such as ice blade and change the hidden file display If the current window class is "AfxControlBar42s", then send a WM_CLOSE message to this window and simulate the return key of the keyboard .
Modify the following registry key to hide hidden files HKCU \ Software \ Microsoft \ Windows \ CurrentVersion \ Explorer \ Advanced
"Hidden" REG_DWORD 0
"SuperHidden" REG_DWORD 0
"ShowSuperHidden" REG_DWORD 0
6 Release the virus to start, and try to directly replace the input method program ctfmon.exe
7 Download a large number of hacking Trojan viruses to users' computers [2]
The data in the computer is not completely saved after the virus self-help poisoning. Don't be lucky after poisoning, don't think that the computer can be used, because it is a downloader, the longer the time, the more viruses and Trojans it downloads, so you need to seek medical treatment in time after getting sick.
Reinstalling the system is the best way. After the reinstallation is completed, do not touch other partitions. First open my computer, display hidden files and system files, download antivirus software and the latest virus database offline upgrade package from other people's computers, copy it to the machine and install it in the C drive, and upgrade the antivirus software to the latest virus database. Full scan of other partitions. General viruses will be killed. Do not use the computer to do other things until the killing is completed. After cleaning up the virus, it can be used normally.
Lizin added:
Some digital processes appear in the task manager, such as 601081 40058 11358 58254 without .exe behind, it is related to usp10.dll, please pay attention.
usp10.dll will enter Program Files or be added to other programs, destroying the program structure. For example: login QQ, if you set a remember password, it will help you clear all passwords.
usp10.dll download (usp10.dll file)
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