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Sunday, April 17, 2011

DrvKiller SysAnti.exe

This article is taken from here for my future reference.

The file name SysAnti.exe has appeared in an virus analysis report detected/analyzed on 17 Sep 2009. You can see the original report at threatexpert.com

The virus installer may further download more harmful files from the internet. A good firewall can make your computer much safer by detecting such harmful activities and blocking them. Some good freeware recommendations would be ZoneAlarm Free Firewall, and Comodo Internet Security Free Edition (you can choose to install just the firewall from their security suite)

The title of this article indicates that this file Sysm.exe is generated by a virus I have termed as DrvKiller for my convenience of grouping its reports together. You can find them listed on this link
This Nomenclature will also help to separate similar filenames generated by different sort of viruses.

It is always possible that there could be some legitimate application using the same file name, you should be in a better position to find that out, if the file/process on your computer belongs to some legitimate application or not by using special software like the Microsoft's Windows Defender and Sysinternal's Process Explorer.

It creates the file SysAnti.exe on the infected computer. You need to search and delete it. You should end any running process named SysAnti.exe from Task Manager, and also remove the file's entry from windows startup.

Boot in safe mode

Sometimes you will not be able to delete a file even if you find it, in that case you should boot in safe mode and then try to delete it/ them.

View Hidden Files

Before you could delete SysAnti.exe and its associated files you need to search for them, and before doing that you need to enable to view hidden files and folders

  • How to Enable to View Hidden Files and Folders in Windows XP
Remove Processes from Task Manager

You can find out if a process appearing in your task manager is useful or harmful by using Windows Defender to see the path of a currently running program/ process and its publisher, so as to differentiate malware processes from those belonging to legitimate publishers. You may find such processes listed under Unknown Publisher in windows defender.

How to use Windows Defender in windows XP

How to use Windows Defender in windows Vista

Or you can use Sysinternal's Process Explorer for easy detection and removal of virus processes.

Removing entry from windows startup

The system configuration can be started in xp and in vista by typing msconfig in the run box/ start menu search box. In xp by clicking on Start > run . The windows startup is reversible, therefore you can check / uncheck any entry from windows startup any number of times.

After the system configuration window is open, Click on the Startup tab, that will list all the programs that are scheduled to start with windows. Expand the middle column using your mouse pointer so that you can see the full path of the program. Locate and uncheck "SysAnti.exe " (look for any other suspicious names) Press Apply , Press Close/Ok , Select "restart" at the next prompt.

Deleting files

After restarting the computer, use the windows search utility to search for "SysAnti.exe " and also search for any other suspicious names that you found and removed in the task manager or in the start up list. This search should find all its folders on the hard disk, delete the folders from the hard disk.
These are the files created by this virus installer

C:\Program Files\Common Files\SysAnti.exe
C:\Windows\Fonts\dcgje.dllThese are other files found on other installations of this virus
C:\Windows\Fonts\akkna.fon
C:\Windows\Fonts\rdjqa.fon
C:\Windows\Fonts\coju.fon
C:\Windows\Fonts\gdwfs.fon
C:\Windows\Fonts\hfdkj.fon
C:\Windows\Fonts\gccpx.dll
C:\Windows\svghost.exe

Creates following registry keys

    • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DrvKiller
    • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DrvKiller\Security
    • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\DrvKiller
    • HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Services\DrvKiller\Security
You need to delete them manually.

Using CCleaner

Although you can easily get rid of the files in the temp folder simply by running a freeware like the CCleaner, and you will be much safer, if you set CCleaner to run automatically each time the computer starts. more about CCleaner on this link

Simple Step To Unhide Hidden Folder In Flash Drive

The first thing important is, you can open Command Prompt.The simple way to open is just go to run and type CMD press enter. Then Command Prompt will be appear on the screen. After that follow this simple step

1. Type CD.. and CD.. until what you get is just c:\>;
2. Change it to this F:\> by type F: after C:\> (f=your flash drive which is contain in it hidden)
3.Type this attribute -s -h and press enter
4. Check back yang flash drive, I think it will be change to normal.

Best Of Luck!

Saturday, April 16, 2011

How to reinstall system restore in windows xp

Go to Start - Run and type %Windir%\INF then press enter.

In Windows Explorer go to Tools - Folder Options - View Tab and uncheck “Hide extensions for known file types”.

Find the sr.inf file, right click on it and select Install.

Or simply type or paste the following command into the Start - Run box and press enter.

rundll32.exe advpack.dll,LaunchINFSection C:\Windows\Inf\sr.inf

If the Files Needed dialog box appears, click Browse and point to one of these locations:

  • The i386 folder on the Windows XP CD.
  • The i386 folder on the hard drive, if it exists.
  • The C:\Windows\ServicePackFiles\i386 folder if the systems has been updated to Service Pack 2.
  • The retail version of Windows XP (SP2) CD contains the latest version of the files needed also.
  • The SP2 CD, (or the SP2 file DOWNLOADED from Microsoft) click HERE.

If after reinstalling System Restore this error message is received, “System restore was unable to start due to a missing Framedyn.dll. Please reinstall the application to fix this problem.” click HERE.

When the reinstall is complete you will receive this message:

"You must restart your computer before the new settings will take effect.

Do you want to restart your computer now?"

At this point click YES.


Folder options disabled by Virus / Trojan

Are you among those who are not able to access or see your folder options under File Menu>>Tools inWindows Explorer on your Windows XP ? This problem of hidden or disabled folder options occur normally due to malicious virus (w32.rontokbro@mm) activity.

The virus creates an entry in registry to disable “Folder Options” in Windows explorer.

Let us see how we can fix it.


Fix:

In most of the cases, even if the virus is been already removed by your anti-virus program, it doesn’t restore the registry back to the original state. Also anti-virus usually does not delete the registry entry created by the virus.

For restoring the registry settings,follow the steps given below

Enable your folder options in explorer.

1. Go to Start > RUN

2. Type regedit and press enter.

3. Go to HKEY_CURRENT_USER > Software > Microsoft > Windows > CurrentVersion > Policies > Explorer

Registry_setting_small

4. On the right side of the screen, you can see some registry entry names, out of them, right-click onNoFolderOptions and click Modify option.

5.A new small screen pops up, on this screen, sen the value data field as 0 (zero).Press OK.

That’s it but it requires reboot. Trouble Fixed.

If you don’t want to play with the registry yourself ,you can also download the registry file and double click it to add it to the registry.

Command Prompt disabled by virus

There has been two most successful methods with which you can enable your disabled command prompt.

Method 1:

The simplest method to get your command prompt back is to add a registry key , but you should be having registry editing is enabled.

1. Open Start >> Run and type the following command ( or just copy it )

REG add HKCU\Software\Policies\Microsoft\Windows\System /v DisableCMD /t REG_DWORD /d 0 /f


2. Copy the above command and press Enter.

This will solve your trouble and your command prompt will be enabled.

Note: Method 1 may not work when your system is severely infected by a virus and even the registry editing is disabled due to which you are not able to run the above command from run prompt.

Method 2:

It involves a tool called RRT – Remove Restrictions Tool by sergiwa which can enable the disabledcommand prompt by virus.

It also helps in removing other restrictions which are also caused due to virus infection listed below.

  • Disable Folder Options
  • Disable Registry Tools
  • Disable Ctrl+Alt+Del
  • Disable Show hidden files & folders come with hidden attribute set to true!
  • Disable Run Command

Other than it also includes fixes for the removing 38 restrictions that are caused by different types of viruses.

Note: Make sure you boot in to Safe Mode to use Remove Restrictions Tool (RRT). Just click on the buttons and it’ll do it’s job.

The limited version is RRT tool is for FREE for personal use only. If you would like to use theapplication in a business environment you are required to license the application.

We hope at least one of method given above will help to fix the trouble.


Command Prompt disabled by virus

There has been two most successful methods with which you can enable your disabled command prompt.

Method 1:

The simplest method to get your command prompt back is to add a registry key , but you should be having registry editing is enabled.

1. Open Start >> Run and type the following command ( or just copy it )

REG add HKCU\Software\Policies\Microsoft\Windows\System /v DisableCMD /t REG_DWORD /d 0 /f


2. Copy the above command and press Enter.

This will solve your trouble and your command prompt will be enabled.

Note: Method 1 may not work when your system is severely infected by a virus and even the registry editing is disabled due to which you are not able to run the above command from run prompt.

Method 2:

It involves a tool called RRT – Remove Restrictions Tool by sergiwa which can enable the disabledcommand prompt by virus.

It also helps in removing other restrictions which are also caused due to virus infection listed below.

  • Disable Folder Options
  • Disable Registry Tools
  • Disable Ctrl+Alt+Del
  • Disable Show hidden files & folders come with hidden attribute set to true!
  • Disable Run Command

Other than it also includes fixes for the removing 38 restrictions that are caused by different types of viruses.

Note: Make sure you boot in to Safe Mode to use Remove Restrictions Tool (RRT). Just click on the buttons and it’ll do it’s job.

The limited version is RRT tool is for FREE for personal use only. If you would like to use theapplication in a business environment you are required to license the application.

We hope at least one of method given above will help to fix the trouble.


Registry editing has been disabled by your administrator

Whenever they open Run and type regedit and press enter a message prompt appears saying “Registry editing has been disabled by your administrator“.

Let’s see how can we fix it.


Fix:

There are two ways through which you can enable registry editing in windows XP

Method 1:

You can use a simple UnHookExec.inf to enable registry editing.

1. Download UnHookExec.inf

2. Right click on the downloaded file and select install.

Method 2:

For enabling you can also use the remove restrictions tool by Sergiwa.com, if the method 1 doesn’t work for you.

we have already posted how you can remove the restrictions imposed by the virus with RRT

1. First Download Remove Restrictions Tool [This is link to old freeware version of this tool, new version has been made paid. You can opt to buy it if you want to from this link. ]

2. Run and check the registry tools and click apply.

Method 3:

if the above two methods does not work for you , you can also try executing a small vbscript which I found on major geeks.

1. First Download EnableRegEdit.vbs

2. Double click on the downloaded file to enable registry editing.

We hope at least one of the above will help to fix the trouble.

Enable Run Command if it is missing from Start Menu

Some User have complained about the Run Command missing from Start Menu due to some virus effects. Also users when press ( Windows Key + R ) to use Run command an error message appears

This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator.

screenshot003.jpg

Run not displaying in Start Menu

So I have finally came up with the solution for it. I have made up two solutions, Manual and Automatic. First try Manual and if it did not work then try Automatic.

Manual Solution

Open My Computer –> C drive –> Windows –> System32 –> Locate gpedit.msc file and run it. See the figure below

screenshot004.jpg

While you have opened Group Policy see in the left pane and in the User ConfigurationExpand Administrative Templates and select Start Menu and Taskbar now in the right pane locate Remove Run Menu from Start Menu and double click it. See the figures

screenshot005.jpg

screenshot008.jpg

Select Disabled in the properties dialogue and press apply then OK

screenshot001.jpg

Now close all open Windows you will see the Run has been restored in Start Menu. See the figure now

screenshot002.jpg