What is Sober.A Worm and How Did I Get It?

Sober.A is a mass-mailing worm that uses its own SMTP engine to spread itself. The subject of the email varies, and it will be in either English or German.

The name of the email attachment varies, and it will have a .bat, .com, .exe, .pif, or .scr file extension.

This threat is written in the Microsoft Visual Basic programming language and is compressed with UPX.

When Sober.A is first run, it performs the following actions:

1. May display the fake message:"File not complete!"
   
   
2. Copies itself as %System%\Similare.exe.
   
   
3. Creates several copies of itself to the %System% directory using variable filenames, which may be chosen from the following list:
   
   • antiv.exe
   • driver.exe
   • driverini.exe
   • drv.exe
   • expoler.exe
   • filexe.exe
   • hlp16.exe
   • lssas.exe
   • qname.exe
   • spoole.exe
   • swchost.exe
   • syshost.exe
   • systemchk.exe
   • systemini.exe
   • winchk.exe
   • winlog32.exe
   • winreg.exe
     
     
4. Adds the value that refers to the worm copy in %System% folder to the registry keys:
   
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
   
   so that the worm runs when you start Windows.
   
   For example, the worm may add the following value to these registry keys,
   
   "hostend"="%System%\Winreg.exe"
   
5. Creates the file, %System%\Macromed\Help\Media.dll.
   
   
6. Retrieves email addresses from local files and stores them in the Media.dll.file.
   
   
7. Uses its own SMTP engine to send itself to all the email addresses it finds.

The email subject is one of the following:

• Neuer Virus im Umlauf!
• Sie versenden Spam Mails (Virus?)
• Ein Wurm ist auf Ihrem Computer!
• Langsam reicht es mir
• Sie haben mir einen Wurm geschickt!
• Hi Schnuckel was machst du so ?
• VORSICHT!!! Neuer Mail Wurm
• Re: Kontakt
• RE: Sex
• Sorry, Ich habe Ihre Mail bekommen
• Hi Olle, lange niks mehr gehört!
• Re: lol
• ......

How to Remove Sober.A Worm?

Kaspersky Internet Security Can Prevent You From Virus and Intrusion. If Kaspersky detects Sober.A during the scan, it will AUTOMATICALLY offer you the option of deleting it. Do this by following the program's instructions.

Follow these steps in removing the Sober.A worm.

1. Disabling System Restore (Windows Me/XP)

For instructions on how to turn off System Restore, read your Windows documentation, or one of the following articles: "How to disable or enable Windows Me/XP System Restore".

2. Updating the Virus Definitions

If you do not know which anti-virus software can provide strong protection for you, Kaspersky Internet Security is recommended.

3. Identifying the Malware Program

To remove this malware, first identify the malware program.

1. Scan your system with your Kaspersky antivirus product.
2. NOTE all files detected as SOBER.A.

4. Terminating the Malware Program

This procedure terminates the running malware process from memory. You will need the name(s) of the file(s) detected earlier.

1. Open Windows Task Manager.
   On Windows 95/98/ME systems, press
   CTRL+ALT+DELETE
   On Windows NT/2000/XP systems, press
   CTRL+SHIFT+ESC, then click the Processes tab.
2. In the list of running programs*, locate the malware file or files detected earlier.
3. Select one of the detected files, then press either the End Task or the End Process button, depending on the version of Windows on your system.
4. Do the same for all detected malware files in the list of running processes.
5. To check if the malware process has been terminated, close Task Manager, and then open it again.
6. Close Task Manager.

5. Removing Autostart Entries from the Registry

Removing autostart entries from registry prevents the malware from executing during startup. This is also an effective way to terminate its process. In this procedure, you will need the name/s of the file/s detected earlier.

1. Open Registry Editor. Click Start>Run, type Regedit then hit Enter.
2. In the left panel, double click the following:
   HKEY_LOCAL_MACHINE>Software>Microsoft>
   Windows>CurrentVersion>Run
3. In the right panel, locate and delete the entry or entries whose data value is the malware path and file name of the file/s detected earlier.
4. Close Registry Editor.

6. Run a full system scan and delete all the files detected as Sober.A.

1. Start your Kaspersky Internet Security and make sure that it is configured to scan all the files.
2. Run a full system scan.
3. If any files are detected as infected with Sober.A, click Delete.

How to Disinfect My Computer from Worms?

In order to keep your computer protected, bear the following tips in mind:

1. If you have filtering tools installed, configure them to reject messages with the characteristics described above. If, in spite of doing this, you receive the message that contains the virus: do not open it, do not run the attached file and delete it, making sure that you also delete it from the Deleted Items folder.
2. Install a good antivirus in your computer. Select Kaspersky Internet Security to get the Kaspersky antivirus solution that best suits your needs.
3. Keep your antivirus updated. If automatic updates are available, configure your antivirus to use them.
4. Keep your permanent antivirus protection enabled at all times.

Detect and Removal Instruction for Other Worms - 'S':