W32.Iretsim

W32.Iretsim propagates by copying itself to removable media devices and can stop security-related processes on the infected computer. W32.Iretsim will drop autorun.inf file on located drives so that it will be loaded once the drive is accessed.

Damage Level: Medium

Systems Affected: Windows 9x, 2000, XP, Windows Vista

Technical Details and Additional Information:

What can W32.Iretsim do to infected system?
– The worm will disable Windows functions like syste restore, and folder options.
– Modify registry to run itself during Windows start-up.
– It will hide certain files like wupdmgr.exe, msvbvm60.dll, msgsvc.exe and msvbvm60.dll..

Malicious Files Added by W32.Iretsim
%DriveLetter%\Ketemu_Pocong_Di_Rumah_Sakit.scr
%DriveLetter%\Ketemu_Pocong_Di_Rumah_Sakit.pdf
%DriveLetter%\Kumpulan_Cerita_S-x_Education.scr
%DriveLetter%\Kumpulan_Cerita_S-x_Education.pdf
%DriveLetter%\Kumpulan_Kisah_Kisah_Misteri.scr
%DriveLetter%\Kumpulan_Kisah_Kisah_Misteri.pdf
%DriveLetter%\Misteri_Hilangnya_Pesawat_Adam_Air.scr
%DriveLetter%\Misteri_Hilangnya_Pesawat_Adam_Air.pdf
%DriveLetter%\Games Windows\Ramal Jodoh.pif
%DriveLetter%\Games Windows\Game Kartu.exe
C:\Documents and Settings\All Users\Start Menu\Programs\Startup\Windows Update.lnk
%ProgramFiles%\WindowsUpdate\wupdmgr.exe
%ProgramFiles%\msvbvm60.dll
%Windir%\system32\msgsvc.exe
%Windir%\J_06_JA.pdf
%Windir%\msvbvm60.dll
%Windir%\system32\sol.exe

Associated Windows Registry Entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\”AntiVirusOverride” = “1”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\”FirewallOverride” = “1”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\HideFileExt\”UncheckedValue” = “1”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\SuperHidden\”UncheckedValue” = “0”
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\”RegisteredOrganization” = “G04T-70674K412T4″
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\”RegisteredOwner” = “Kota Gudeg”
HKEY_CURRENT_USERS\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\”HideFileExt” = “1”
HKEY_CURRENT_USERS\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\”ShowSuperHidden” = “0”

How to Remove W32.Iretsim

Systematic procedures to get rid of the threat are presented on this section. Make sure to scan the computer with suggested tools and scanners.

NOTE: We suggest that you PRINT or BOOKMARK this guide. There are steps that we may have to restart the computer in order to successfully remove the threat.

Step 1 : Run a scan with your antivirus program

1. Remove all media such as Memory Card, cd, dvd, and USB devices. Then, restart the computer and please do the following:

Boot in Safe Mode on Windows XP, Windows Vista, and Windows 7 system
a) Before Windows begins to load, press F8 on your keyboard.
b) It will display the Advanced Boot Options menu. Select Safe Mode.

Start computer in Safe Mode using Windows 8 and Windows 10
a) Close any running programs on your computer.
b) Get ready to Start Windows. On your keyboard, Press and Hold Shift key and then, click on Restart button.
c) It will prompt you with options, please click on Troubleshoot icon.
d) Under Troubleshoot window, select Advanced Options.
e) On next window, click on Startup Settings icon.
f) Lastly, click on Restart button on subsequent window.
g) When Windows restarts, present startup options with numbers 1 - 9. Select "Enable Safe Mode with Networking" or number 5.

Startup Options

h) Windows will now boot on Safe Mode with Networking. Proceed with virus scan as the next step.

2. Once Windows is running under Safe Mode with Networking, open your antivirus program and download the most recent update. This method ensures that your antivirus program can detect even newer variants of W32.Iretsim.

Updating your antivirus software is a one-click process. Please refer to your software manual for complete instructions.

3. Once updating is finished, run a full system scan on the affected PC. After the scan, delete all infected items. If unable to clean or delete, better place the threat in quarantine.

Step 2: Run another test with online virus scanner

Another way to remove W32.Iretsim without the need to install additional antivirus software is to perform a thorough scan with free online virus scanner. It can be found on websites of legitimate antivirus and security provider.

1. Click the button below to proceed to the list of suggested Online Virus Scanner. Choose your desired provider. You can run each scan individually, one at a time, to ensure that all threats will be removed from the computer. This may require plug-ins, add-on or Activex object, please install if you want to proceed with scan.

Online Virus Scan

2. After completing the necessary download, your system is now ready to scan and remove W32.Iretsim and other kinds of threats.
3. Select an option in which you can thoroughly scan the computer to make sure that it will find and delete entirely all infections not detected on previous scan.
4. Remove or delete all detected items.
5. When scanning is finished, you may now restart the computer in normal mode.

Alternative Removal Procedures for W32.Iretsim

Option 1 : Use Windows System Restore to return Windows to previous state

During an infection, W32.Iretsim drops various files and registry entries. The threat intentionally hides system files by setting options in the registry. With these rigid changes, the best solution is to return Windows to previous working state is through System Restore.

To verify if System Restore is active on your computer, please follow the instructions below to access this feature.

Access System Restore on Windows XP, Windows Vista, and Windows 7

a) Go to Start Menu, then under 'Run' or 'Search Program and Files' field, type rstrui.
b) Then, press Enter on the keyboard to open System Restore Settings.

rstrui-win7

Open System Restore on Windows 8 and Windows 10

a) Hover your mouse cursor to the lower left corner of the screen and wait for the Start icon to appear.
b) Right-click on the icon and select Run from the list. This will open a Run dialog box.
c) Type rstrui on the 'Open' field and click on OK to initiate the command.

rstrui-win8

If previous restore point is saved, you may proceed with Windows System Restore. Click here to see the full procedure.

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About Marco Mathew

Marco Mathew works as Windows Network administrator before establishing precisesecurity.com. Now, Marco is dedicating full-time to help computer users' fight viruses, malware, trojan, worms, adware, and potentially unwanted programs.

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