Whenever I restart the computer, get an error message rundll Securitycrt\Appapint5.dll is missing.

missing appapint5.dll file

Whenever I restart the computer, get an error message rundll Securitycrt\Appapint5.dll is missing.  Then cannot rely on automatic updates.  Wait they are related.  Could not find the Appapint5.dll file on the ms site.  Runnig XP.  What I can do, or have been find file?
CB

It is the Trojan horse!

Technical information
Virus name: Trojan.MulDrop3.7713
Found: Dr.Web

TO ENSURE THE DISTRIBUTION AND THE AUTORUN:
Modifies the following registry keys:
  • [\Software\Microsoft\Windows\CurrentVersion\Run] "Acrocfgclass" = "rundll32.exe"\isaNetARM\Acrocfgclass.dll",Appapint5 LibGLmm'

MALICIOUS FUNCTIONS:
Running the following:
  • \rundll32.exe "\isaNetARM\Acrocfgclass.dll",Appapint5 LibGLmm ".
  • \rundll32.exe "% TEMP%\userMouseCtrl.dll", Appapint5 xpMainInterval

CHANGES THE FILE SYSTEM:
Creates the following files:
  • \isaNetARM\Acrocfgclass.dll
  • %Temp%\userMouseCtrl.dll
Deletes the following files:
  • %Temp%\userMouseCtrl.dll

VARIOUS:
Research for the following windows:
  • ClassName: 'indicator' WindowName: "
  • ClassName: 'CRLobjTray' WindowName: "

Please note: some characters are replaced with symbols in order to prevent inappropriate access to malware.

Steps to automatically remove the "Trojan.MulDrop3.7713".
  • Download Dr.Web CureIt! and save it to the desktop.
  • Download security space Pro 7.0 (32/64 bit), save it to the desktop.
  • Restart the computer using safe mode (press F8 before any Microsoft logo appears).
  • Double-click "cureit.exe" on desktop, follow the instructions on the screen to scan the hard drive.
    (Wait a few moments, it may take from 20 to 60 minutes to perform an analysis of the express)
  • Once the scan is complete, select all viruses find and choose "Cure."
    (If some files are not suitable to be healed, choose 'Quarantine' or 'Delete').
  • When all detected viruses are cured, quarantined, or deleted, restart in Normal mode.
  • Uninstall antivirus software existing that can not kill the virus and then reboot again.
  • Navigate to the Pro area security configuration file on the desktop, double-click to run it.
    (For procedures, please refer to the video installation guide.)
  • During installation, choose to get a demo key.
  • After the first update of time, the scanner will be launched again, leave the scanner at this stage.
  • Complete the installation by restarting the computer.
  • If time is allowed (possibly several hours), perform a full scan of Dr.Web Scanner.

Note:

  • If it is impossible to start Windows because of the infection by the virus, try Dr.Web LiveCD or Dr.Web LiveUSBinstead of Dr.Web CureIt!
  • The time required for quick scan or full scan depends on many factors, such as the performance of the system, memory available, running processes, number of discs and files, etc..

Tags: Windows

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