W32.HLLW.Fatee.B

SUMMARY

W32.HLLW.Fatee.B is a worm that spreads through file-sharing networks. It also tries to spread through the network shares.

Protection

• Virus Definitions (LiveUpdate™ Weekly) October 1, 2003
• Virus Definitions (Intelligent Updater) September 26, 2003

Threat Assessment

Wild

• Wild Level: Low
• Number of Infections: 0 - 49
• Number of Sites: 0 - 2
• Geographical Distribution: Low
• Threat Containment: Easy
• Removal: Moderate

Damage

• Damage Level: Low

Distribution

• Distribution Level: Medium
• Shared Drives: Attempts to spread through file-sharing networks such as KaZaA Lite, KaZaA, eMule, eDonkey2000, Overnet, Winmx, LimeWire, Morpheus, and Bearshare.

TECHNICAL DETAILS

When W32.HLLW.Fatee.B is executed, it does the following:

1. Arrives on the computer as one of the following file names:
   • LeeM&Pie.exe
   • Hotmail Hacking.exe
   • Kazaa User Hacking.exe
   • Password Cracker.exe
   • IP Finder.exe
   • School FTP Cracker.exe
   • MSBlast Source Code.exe
   • Source Code Cracker.exe
   • Hackers MSN.exe
   • FTP Crack.exe
   • Sub Seveven v88 (NO SERVER NEEDED).exe
   • Kazaa 9.9 (No Messed Up Songs!!!).exe
   • Project1.exe
   • New Program.exe
   • New Chat Program.exe
   • Oliver.exe
     
     
2. Displays the alert message:
   
   From Treck Man
   Lee Eats Pie, And by da way, get Some Protection. OLIVERS GAY... :) Munga Bunga Was ERE
   
   
3. Adds the value:
   
   "MyApp"="<original file name>"
   
   to the registry key:
   
   HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionRun
   
   so that the worm is executed when Windows starts.
   
   
4. Copies a file from the same folder as the running worm executable (which has a filename included in the list of step 1) to C:WindowsSystem.Pif.
   
   
5. Copies System.Pif as the following files:
   • C:Documents and SettingsAll UsersStart MenuProgramsStartupWindows.pif
   • C:WindowsStart MenuProgramsStartupWindows.pif
     
     so that the worm starts when Windows starts.
     
     
6. Attempts to copy System.Pif to computers on the same local area network whose IP is 192.168.1.%number%, where %number% is a variable, ranging (not limited to) from 1 to 55.
   
   The location to which the worm copies itself on these remote computers are:
   • C:Documents and SettingsAll UsersStart MenuProgramsStartupWindows.pif
   • C:WindowsStart MenuProgramsStartupWindows.pif
     
     
7. Copies itself to the following locations as the files listed in step 1, if the folders exist:

C:Program Fileskazaamy shared folderLeeM&Pie.exe
C:Program Fileskazaamy shared folderHotmail Hacking.exe
C:Program Fileskazaamy shared folderKazaa User Hacking.exe
C:Program Fileskazaamy shared folderPassword Cracker.exe
C:Program Fileskazaamy shared folderIP Finder.exe
C:Program Fileskazaamy shared folderSchool FTP Cracker.exe
C:Program Fileskazaamy shared folderMSBlast Source Code.exe
C:Program Fileskazaamy shared folderSource Code Cracker.exe
C:program filesICQShared FolderLeeM&Pie.exe
C:Program Fileskazaamy shared folderFTP Crack.exe
C:Program Fileskazaamy shared folderSub Seveven v88 (NO SERVER NEEDED).exe
C:Program Fileskazaamy shared folderKazaa 9.9 (No Messed Up Songs!!!).exe
C:Program Fileskazaamy shared folderIP Nuker (Works on All Windows OS up to XP).exe
C:Program Fileskazaa litemy shared folderLeeM&Pie.exe
C:Program Fileskazaa litemy shared folderHotmail Hacking.exe
C:Program Fileskazaa litemy shared folderKazaa User Hacking.exe
C:Program Fileskazaa litemy shared folderPassword Cracker.exe
C:Program Fileskazaa litemy shared folderIP Finder.exe
C:My DownloadsSchool FTP Cracker.exe
C:Program Fileskazaa litemy shared folderSchool FTP Cracker.exe
C:Program Fileskazaa litemy shared folderMSBlast Source Code.exe
C:Program Fileskazaa litemy shared folderSource Code Cracker.exe
C:Program Fileskazaa litemy shared folderFTP Crack.exe
C:Program Fileskazaa litemy shared folderSub Seveven v88 (NO SERVER NEEDED).exe
C:Program Fileskazaa litemy shared folderKazaa 9.9 (No Messed Up Songs!!!).exe
C:Program Fileskazaa litemy shared folderIP Nuker (Works on All Windows OS up to XP).exe
C:Program FilesKazaa Lite K++my shared folderLeeM&Pie.exe
C:Program FilesKazaa Lite K++my shared folderHotmail Hacking.exe
C:Program FilesKazaa Lite K++my shared folderKazaa User Hacking.exe
C:Program FilesKazaa Lite K++my shared folderPassword Cracker.exe
C:Program FilesKazaa Lite K++my shared folderIP Finder.exe
C:Program FilesKazaa Lite K++my shared folderSchool FTP Cracker.exe
C:Program FilesKazaa Lite K++my shared folderMSBlast Source Code.exe
C:Program FilesKazaa Lite K++my shared folderSource Code Cracker.exe
C:Program FilesKazaa Lite K++my shared folderFTP Crack.exe
C:Program FilesKazaa Lite K++my shared folderSub Seveven v88 (NO SERVER NEEDED).exe
C:Program FilesKazaa Lite K++my shared folderKazaa 9.9 (No Messed Up Songs!!!).exe
C:Program FilesKazaa Lite K++my shared folderIP Nuker (Works on All Windows OS up to XP).exe
C:Program Filesgrokstermy groksterLeeM&Pie.exe
C:Program Filesgrokstermy groksterHotmail Hacking.exe
C:Program Filesgrokstermy groksterKazaa User Hacking.exe
C:Program Filesgrokstermy groksterPassword Cracker.exe
C:Program Filesgrokstermy groksterIP Finder.exe
C:Program Filesgrokstermy groksterSchool FTP Cracker.exe
C:Program Filesgrokstermy groksterMSBlast Source Code.exe
C:Program Filesgrokstermy groksterSource Code Cracker.exe
C:Program Filesgrokstermy groksterFTP Crack.exe
C:Program FilesearsharesharedLeeM&Pie.exe
C:Program Filesgrokstermy groksterSub Seveven v88 (NO SERVER NEEDED).exe
C:Program Filesgrokstermy groksterKazaa 9.9 (No Messed Up Songs!!!).exe
C:Program Filesgrokstermy groksterIP Nuker (Works on All Windows OS up to XP).exe
C:Program FilesearsharesharedHotmail Hacking.exe
C:Program FilesearsharesharedKazaa User Hacking.exe
C:Program FilesearsharesharedPassword Cracker.exe
C:Program FilesearsharesharedIP Finder.exe
C:Program FilesearsharesharedSchool FTP Cracker.exe
C:Program FilesearsharesharedMSBlast Source Code.exe
C:Program FilesearsharesharedSource Code Cracker.exe
C:Program FilesearsharesharedFTP Crack.exe
C:Program FilesearsharesharedSub Seveven v88 (NO SERVER NEEDED).exe
C:Program FilesearsharesharedKazaa 9.9 (No Messed Up Songs!!!).exe
C:Program FilesearsharesharedIP Nuker (Works on All Windows OS up to XP).exe
C:Program Filesedonkey2000incomingLeeM&Pie.exe
C:Program Filesedonkey2000incomingHotmail Hacking.exe
C:Program Filesedonkey2000incomingKazaa User Hacking.exe
C:Program Filesedonkey2000incomingPassword Cracker.exe
C:Program Filesedonkey2000incomingIP Finder.exe
C:Program Filesedonkey2000incomingSchool FTP Cracker.exe
C:Program Filesedonkey2000incomingMSBlast Source Code.exe
C:Program Filesedonkey2000incomingSource Code Cracker.exe
C:Program Filesedonkey2000incomingFTP Crack.exe
C:Program Filesedonkey2000incomingSub Seveven v88 (NO SERVER NEEDED).exe
C:Program Filesedonkey2000incomingKazaa 9.9 (No Messed Up Songs!!!).exe
C:Program Filesedonkey2000incomingIP Nuker (Works on All Windows OS up to XP).exe
C:Program FileseMuleincomingLeeM&Pie.exe
C:Program FileseMuleincomingHotmail Hacking.exe
C:Program FileseMuleincomingKazaa User Hacking.exe
C:Program FileseMuleincomingPassword Cracker.exe
C:Program FileseMuleincomingIP Finder.exe
C:Program FileseMuleincomingSchool FTP Cracker.exe
C:Program FileseMuleincomingMSBlast Source Code.exe
C:Program FileseMuleincomingSource Code Cracker.exe
C:Program FileseMuleincomingFTP Crack.exe
C:Program FileseMuleincomingSub Seveven v88 (NO SERVER NEEDED).exe
C:Program Filesmorpheusmy shared folderHotmail Hacking.exe
C:Program FileseMuleincomingKazaa 9.9 (No Messed Up Songs!!!).exe
C:Program FileseMuleincomingIP Nuker (Works on All Windows OS up to XP).exe
C:Program Filesmorpheusmy shared folderLeeM&Pie.exe
C:Program Filesmorpheusmy shared folderKazaa User Hacking.exe
C:Program Filesmorpheusmy shared folderPassword Cracker.exe
C:Program Filesmorpheusmy shared folderIP Finder.exe
C:Program FileswinmxsharedHotmail Hacking.exe
C:Program Filesmorpheusmy shared folderSchool FTP Cracker.exe
C:Program Filesmorpheusmy shared folderMSBlast Source Code.exe
C:Program Filesmorpheusmy shared folderSource Code Cracker.exe
C:Program Filesmorpheusmy shared folderFTP Crack.exe
C:Program Filesmorpheusmy shared folderSub Seveven v88 (NO SERVER NEEDED).exe
C:Program Filesmorpheusmy shared folderKazaa 9.9 (No Messed Up Songs!!!).exe
C:Program Filesmorpheusmy shared folderIP Nuker (Works on All Windows OS up to XP).exe
C:Program FileslimewiresharedLeeM&Pie.exe
C:Program FileslimewiresharedHotmail Hacking.exe
C:Program FilesXoloXDownloadsLeeM&Pie.exe
C:Program FileslimewiresharedKazaa User Hacking.exe
C:Program FileslimewiresharedPassword Cracker.exe
C:Program FileslimewiresharedIP Finder.exe
C:Program FileslimewiresharedSchool FTP Cracker.exe
C:Program FileslimewiresharedMSBlast Source Code.exe
C:Program FileslimewiresharedSource Code Cracker.exe
C:Program FileslimewiresharedFTP Crack.exe
C:Program FileslimewiresharedSub Seveven v88 (NO SERVER NEEDED).exe
C:Program FileslimewiresharedKazaa 9.9 (No Messed Up Songs!!!).exe
C:Program FileslimewiresharedIP Nuker (Works on All Windows OS up to XP).exe
C:Program FileswinmxsharedLeeM&Pie.exe
C:Program FilesTeslaFilesLeeM&Pie.exe
C:Program FileswinmxsharedKazaa User Hacking.exe
C:Program FileswinmxsharedPassword Cracker.exe
C:Program FileswinmxsharedIP Finder.exe
C:Program FileswinmxsharedSchool FTP Cracker.exe
C:Program FileswinmxsharedMSBlast Source Code.exe
C:Program FileswinmxsharedSource Code Cracker.exe
C:Program FileswinmxsharedFTP Crack.exe
C:Program FileswinmxsharedSub Seveven v88 (NO SERVER NEEDED).exe
C:Program FileswinmxsharedKazaa 9.9 (No Messed Up Songs!!!).exe

so the worm can spread through file-sharing networks, such as KaZaA Lite, KaZaA, eMule, eDonkey2000, Overnet, Winmx, LimeWire, Morpheus, Bearshare or any file-sharing program that uses these folders.

Recommendations

Symantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":

• Turn off and remove unneeded services. By default, many operating systems install auxiliary services that are not critical, such as an FTP server, telnet, and a Web server. These services are avenues of attack. If they are removed, blended threats have less avenues of attack and you have fewer services to maintain through patch updates.
• If a blended threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
• Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services (for example, all Windows-based computers should have the current Service Pack installed.). Additionally, please apply any security updates that are mentioned in this writeup, in trusted Security Bulletins, or on vendor Web sites.
• Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
• Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files.
• Isolate infected computers quickly to prevent further compromising your organization. Perform a forensic analysis and restore the computers using trusted media.
• Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.

REMOVAL

The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.

1. Disable System Restore (Windows Me/XP).
2. Update the virus definitions.
3. Restart the computer in Safe mode or VGA mode.
4. Run a full system scan and delete all the files detected as W32.HLLW.Fatee.B.
5. Reverse the changes that the Trojan made to the registry.
   

For details on each of these steps, read the following instructions.

1. Disabling System Restore (Windows Me/XP)
If you are running Windows Me or Windows XP, we recommend that you temporarily turn off System Restore. Windows Me/XP uses this feature, which is enabled by default, to restore the files on your computer in case they become damaged. If a virus, worm, or Trojan infects a computer, System Restore may back up the virus, worm, or Trojan on the computer.

Windows prevents outside programs, including antivirus programs, from modifying System Restore. Therefore, antivirus programs or tools cannot remove threats in the System Restore folder. As a result, System Restore has the potential of restoring an infected file on your computer, even after you have cleaned the infected files from all the other locations.

Also, a virus scan may detect a threat in the System Restore folder even though you have removed the threat.

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 System Restore"
• "How to turn off or turn on Windows XP System Restore"

For additional information, and an alternative to disabling Windows Me System Restore, see the Microsoft Knowledge Base article, "Antivirus Tools Cannot Clean Infected Files in the _Restore Folder," Article ID: Q263455.

2. Updating the virus definitions
Symantec Security Response fully tests all the virus definitions for quality assurance before they are posted to our servers. There are two ways to obtain the most recent virus definitions:

• Running LiveUpdate, which is the easiest way to obtain virus definitions: These virus definitions are posted to the LiveUpdate servers once each week (usually on Wednesdays), unless there is a major virus outbreak. To determine whether definitions for this threat are available by LiveUpdate, refer to the Virus Definitions (LiveUpdate).
• Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted on U.S. business days (Monday through Friday). You should download the definitions from the Symantec Security Response Web site and manually install them. To determine whether definitions for this threat are available by the Intelligent Updater, refer to the Virus Definitions (Intelligent Updater).
  
  The Intelligent Updater virus definitions are available: Read "How to update virus definition files using the Intelligent Updater" for detailed instructions.
  

3. Restarting the computer in Safe mode or VGA mode

Shut down the computer and turn off the power. Wait for at least 30 seconds, and then restart the computer in Safe mode or VGA mode.

• For Windows 95, 98, Me, 2000, or XP users, restart the computer in Safe mode. For instructions, read the document, "How to start the computer in Safe Mode"
• For Windows NT 4 users, restart the computer in VGA mode.

4. Scanning for and deleting the infected files

1. Start your Symantec antivirus program and make sure that it is configured to scan all the files.
   • For Norton AntiVirus consumer products: Read the document, "How to configure Norton AntiVirus to scan all files."
   • For Symantec AntiVirus Enterprise products: Read the document, "How to verify that a Symantec Corporate antivirus product is set to scan all files."
2. Run a full system scan.
3. If any files are detected as infected with W32.HLLW.Fatee.B, click Delete.

5. Reversing the changes made to the registry

---

WARNING: Symantec strongly recommends that you back up the registry before making any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify the specified keys only. Read the document, "How to make a backup of the Windows registry," for instructions.

---

1. Click Start, and then click Run. (The Run dialog box appears.)
2. Type regedit
   
   Then click OK. (The Registry Editor opens.)
   
   
3. Navigate to the key:
   
   HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionRun
   
   
4. In the right pane, delete the value:
   
   "MyApp"=<Oringal File Name>
   
   
5. Exit the Registry Editor.