W32.Ackantta.C@mm

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Discovered: June 12, 2009
Updated: June 15, 2009 1:32:46 PM
Also Known As: W32.Jessinv [Symantec], W32/Autorun-AKG [Sophos]
Type: Worm
Infection Length: 557,096 bytes
Systems Affected: Windows

W32.Ackantta.C@mm is a mass-mailing worm that spreads through file-sharing programs and sends spam email that contains links to malicious files.

Note: Virus definitions dated June 15, 2009 or earlier detect this threat as W32.Jessinv.

For more information, please see the following resources:

Antivirus Protection Dates

  • Initial Rapid Release version June 12, 2009 revision 020
  • Latest Rapid Release version February 19, 2013 revision 016
  • Initial Daily Certified version June 12, 2009 revision 021
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date June 17, 2009

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Writeup By: Hatsuho Honda and Fergal Ladley

Discovered: June 12, 2009
Updated: June 15, 2009 1:32:46 PM
Also Known As: W32.Jessinv [Symantec], W32/Autorun-AKG [Sophos]
Type: Worm
Infection Length: 557,096 bytes
Systems Affected: Windows

When the worm executes, it copies itself to the following location:
%System%\sndmic32.exe

It then creates the following file as an infection-marker:
%UserProfile%\Local Settings\Temp\test.htm

Next, the worm creates the following files:

  • %System%\javapatch[TWO RANDOM NUMBERS].exe
  • %Windir%\snd.exe
  • %System%\SKYNET[EIGHT RANDOM CHARACTERS].dll
  • %System%\SKYNET[EIGHT RANDOM CHARACTERS].dll
  • %System%\SKYNET[EIGHT RANDOM CHARACTERS].dat
  • %System%\drivers\SKYNET[EIGHT RANDOM CHARACTERS].sys


It may also create several files of the following format:
%UserProfile%\Local Settings\Temp\[RANDOM CHARACTERS].tmp

Next, the worm creates the following registry entries so that it executes whenever Windows starts:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"Windows Audio Service" = "%System%\sndmic32.exe"
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\"Windows Audio" = "%Windir%\snd.exe"
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\"Windows Audio" = "%Windir%\snd.exe"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}\"StubPath" = "\"%Windir%\snd.exe\""


It then creates the following registry entry to add itself to the list of authorized applications for the Windows Firewall:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\"%System%\sndmic32.exe" = "%System%\sndmic32.exe:*:Enabled:Explorer"

The worm then creates a service with the following characteristics:
ServiceName: SKYNET[EIGHT RANDOM CHARACTERS]
ImagePath: %System%\drivers\SKYNET[EIGHT RANDOM CHARACTERS].sys

It creates the following registry subkey for the above service:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SKYNET[EIGHT RANDOM CHARACTERS]

It also creates the following registry subkeys:
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\FXS
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\solashit2
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\sunshit2


Next, it may modify the following registry entry to disable System Restore:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SystemRestore\"DisableSR" = "1"

It deletes the following registry subkeys:
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\wscsvc
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ERSvc
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WSCSVC
  • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_ERSVC


It may also delete the following registry entries:
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"SBAMTray"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"sbamui"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"cctray"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"CAVRID"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"BDAgent"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"egui"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"avast!"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"AVG8_TRAY"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"ISTray"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"K7SystemTray"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"K7TSStart"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"SpIDerMail"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"DrWebScheduler"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"AVP"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"OfficeScanNT Monitor"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"SpamBlocker"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"Spam Blocker for Outlook Express"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"F-PROT Antivirus Tray application"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"RavTask"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"APVXDWIN"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"SCANINICIO"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"McENUI"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"MskAgentexe"
  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"Windows Defender"


The worm may delete the following file:
%CurrentFolder%\mcshield.exe

The worm attempts to spread by copying itself to the following folders on the compromised computer:
  • %ProgramFiles%\ICQ\Shared Folder
  • %ProgramFiles%\Grokster\My Grokster
  • %ProgramFiles%\EMule\Incoming
  • %ProgramFiles%\Morpheus\My Shared Folder
  • %ProgramFiles%\LimeWire\Shared
  • %ProgramFiles%\Tesla\Files
  • %ProgramFiles%\WinMX\Shared
  • %SystemDrive%\Downloads


It copies itself to the above locations as the following files:
  • Absolute Video Converter 6.2.exe
  • Ad-aware 2009.exe
  • Alcohol 120 v1.9.7.exe
  • AnyDVD HD v.6.3.1.8 Beta incl crack.exe
  • Avast 4.8 Professional.exe
  • AVS video converter6.exe
  • BitDefender AntiVirus 2009 Keygen.exe
  • CheckPoint ZoneAlarm And AntiSpy.exe
  • CleanMyPC Registry Cleaner v6.02.exe
  • Daemon Tools Pro 4.11.exe
  • Divx Pro 6.8.0.19 + keymaker.exe
  • Download Accelerator Plus v8.7.5.exe
  • Download Boost 2.0.exe
  • DVD Tools Nero 9 2 6 0.exe
  • G-Force Platinum v3.7.5.exe
  • Google Earth Pro 4.2. with Maps and crack.exe
  • Grand Theft Auto IV (Offline Activation).exe
  • Internet Download Manager V5.exe
  • Kaspersky Internet Security 2009 keygen.exe
  • K-Lite codec pack 3.10 full.exe
  • K-Lite codec pack 4.0 gold.exe
  • LimeWire Pro v4.18.3.exe
  • Magic Video Converter 8 0 2 18.exe
  • Microsoft Office 2007 Home and Student keygen.exe
  • Microsoft Visual Studio 2008 KeyGen.exe
  • Microsoft.Windows 7 Beta1 Build 7000 x86.exe
  • Motorola, nokia, ericsson mobil phone tools.exe
  • Myspace theme collection.exe
  • Nero 9 9.2.6.0 keygen.exe
  • Norton Anti-Virus 2009 Enterprise Crack.exe
  • Opera 9.62 International.exe
  • PDF password remover (works with all acrobat reader).exe
  • Perfect keylogger family edition with crack.exe
  • Power ISO v4.2 + keygen axxo.exe
  • Smart Draw 2008 keygen.exe
  • Sony Vegas Pro 8 0b Build 219.exe
  • Sophos antivirus updater bypass.exe
  • Super Utilities Pro 2009 11.0.exe
  • Total Commander7 license+keygen.exe
  • Tuneup Ultilities 2008.exe
  • Ultimate ring tones package1 (Beethoven,Bach, Baris Manco,Lambada,Chopin, Greensleves).exe
  • Ultimate ring tones package2 (Lil Wayne - Way Of Life,Khia - My Neck My Back Like My Pussy And My Crack,Mario - Let Me Love You,R. Kelly - The Worlds Greatest).exe
  • Ultimate ring tones package3 (Crazy In Love, U Got It Bad, 50 Cent - P.I.M.P, Jennifer Lopez Feat. Ll Cool J - All I Have, 50 Cent - 21 Question).exe
  • Winamp.Pro.v6.53.PowerPack.Portable+installer.exe
  • Windows 2008 Enterprise Server VMWare Virtual Machine.exe
  • Windows XP PRO Corp SP3 valid-key generator.exe
  • Windows2008 keygen and activator.exe
  • WinRAR v3.x keygen RaZoR.exe
  • Youtube Music Downloader 1.0.exe

It also spreads by copying itself to all removable drives as the following files:
  • %DriveLetter%\RECYCLER\S-1-6-21-2434476521-1645641927-702000330-1542\redmond.exe
  • %DriveLetter%\RECYCLER\S-1-6-21-2434476521-1645641927-702000330-1542\Desktop.ini


It creates the following file on all removable drives so that it executes whenever the drive is accessed:
%DriveLetter%\autorun.inf

The worm connects to the following URL to get the IP address of the compromised computer:
http://whatismyip.com/automation/n09230945.asp

It may then attempt to contact the following site:
[https://]213.133.110.21

The worm also searches the compromised computer for email addresses in files with the following extensions:
  • .adb
  • .asp
  • .dbx
  • .htm
  • .php
  • .pl
  • .sht
  • .tbb
  • .txt
  • .wab


It then attempts to send emails containing links to potentially malicious files to the email addresses that have been gathered.

The emails may be in one or more of the following formats:

From:
e-cards@hallmark.com
Subject:
You have received A Hallmark E-Card!
Body:
You have recieved A Hallmark E-Card.

Hello!

You have recieved a Hallmark E-Card from your friend.

To see it, check the attachment.

There's something special about that E-Card feeling. We invite you to make a friend's day and send one.

Hope to see you soon,
Your friends at Hallmark

Hallmark.com | Privacy & Security | Customer Service | Store Locator

Attachment:
Postcard.zip


From:
invitations@twitter.com
Subject:
Your friend invited you to twitter!
Body:
Skip past navigation
On a mobile phone? Check out m.twitter.com!
Skip to navigation
Skip to sign in form

Select Language ...[select box]

Your friend invited you to twitter!

Twitter is a service for friends, family, and co-workers to communicate and stay connected through the exchange of quick, frequent answers to one simple question: What are you doing?

To join or to see who invited you, check the attachment.

--------------------------------------------------------------------------------

Watch a video!

Please sign in

user name or email address: [TEXT BOX]

password: [TEXT BOX]

[CHECK BOX]Remember me

[BUTTON]Sign In

Forgot password? Click here.

Already using Twitter from your phone? Click here.

--------------------------------------------------------------------------------

Twitter is the first thing on the web that I've been excited about in ages.

Jason Kottke, Blogger
I really like Twitter.

Jeff Barr, Amazon.com, Senior Manager
Incredibly useful

Wired

--------------------------------------------------------------------------------

Footer
2009 Twitter
About Us
Contact
Blog
Status
Apps
API
Search
Help
Jobs
Terms
Privacy

close

Galleries
of
by

Attachment:
Invitation Card.zip


From:
invitations@hi5.com
Subject:
Jessica would like to be your friend on hi5!
Body:
Join
Log in
Help
Balance: 0 Coins

mobile alerts
Click to Select Language

hi5 Home

Home
My Profile
Friends
Photos
Messages
Games
Groups
Applications
No application s installed
Add Applications·
165 Search true true true false

advanced

Title
body
[BUTTON]Yes [BUTTON]No

Meet new people and keep up with friends on hi5.

Jessica would li ke to be your friend on hi5!

I set up a hi5 profile and I want to add you as a friend so we can share pictures and start building our network. First see your invitation card I attached! Once you join, you will have a chance to create a profile, share pictures, and find friends.

About Us Blog Advertising Jobs People Privacy Policy | Terms of Service | Online Safety 2003-2009 hi5 Networks
2003-2009 hi5 Networks

Attachment:
Invitation Card.zip


From:
order-update@amazon.com
Subject:
Shipping update for your Amazon.com order 254-78546325-658742
Body:
Shipping update for your Amazon.com order 254-78546325-658742

Please check the attachment and confirm your shipping details.

Attachment:
Shipping documents.zip


The worm attempts to connect to SMTP servers by pre-pending the following strings to the domain names found in the gathered email addresses:
  • gate.
  • mail.
  • mail1.
  • mx.
  • mxs.
  • mx1.
  • ns.
  • relay.
  • smtp.


The worm avoids sending email to addresses that contain any of the following strings:

  • abuse
  • secur
  • spam
  • spm
  • www


The worm may redirect Internet access if the requested URL contains any of the following strings:

  • .google.
  • .yahoo.com
  • .bing.com
  • .live.com
  • .ask.com
  • .aol.com
  • .google-analytics.com
  • .yimg.com
  • upload.wikimedia.org
  • img.youtube.com
  • .powerset.com
  • .aolcdn.com
  • .blinkx.com
  • .atdmt.com
  • .othersonline.com
  • .yieldmanager.com
  • .fimserve.com
  • .everesttech.net
  • .doubleclick.net
  • .adrevolver.com
  • .tribalfusion.com
  • .adbureau.net
  • .abmr.net



It may then download files from a remote location and execute them.

Recommendations

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

  • Use a firewall to block all incoming connections from the Internet to services that should not be publicly available. By default, you should deny all incoming connections and only allow services you explicitly want to offer to the outside world.
  • 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.
  • Ensure that programs and users of the computer use the lowest level of privileges necessary to complete a task. When prompted for a root or UAC password, ensure that the program asking for administration-level access is a legitimate application.
  • Disable AutoPlay to prevent the automatic launching of executable files on network and removable drives, and disconnect the drives when not required. If write access is not required, enable read-only mode if the option is available.
  • Turn off file sharing if not needed. If file sharing is required, use ACLs and password protection to limit access. Disable anonymous access to shared folders. Grant access only to user accounts with strong passwords to folders that must be shared.
  • Turn off and remove unnecessary services. By default, many operating systems install auxiliary services that are not critical. These services are avenues of attack. If they are removed, threats have less avenues of attack.
  • If a 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.
  • Configure your email server to block or remove email that contains file attachments that are commonly used to spread threats, such as .vbs, .bat, .exe, .pif and .scr files.
  • Isolate compromised computers quickly to prevent threats from spreading further. 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.
  • If Bluetooth is not required for mobile devices, it should be turned off. If you require its use, ensure that the device's visibility is set to "Hidden" so that it cannot be scanned by other Bluetooth devices. If device pairing must be used, ensure that all devices are set to "Unauthorized", requiring authorization for each connection request. Do not accept applications that are unsigned or sent from unknown sources.
  • For further information on the terms used in this document, please refer to the Security Response glossary.

Writeup By: Hatsuho Honda and Fergal Ladley

Discovered: June 12, 2009
Updated: June 15, 2009 1:32:46 PM
Also Known As: W32.Jessinv [Symantec], W32/Autorun-AKG [Sophos]
Type: Worm
Infection Length: 557,096 bytes
Systems Affected: Windows

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. Run a full system scan.
  4. Find and stop the service.
  5. Delete any values added to the registry.

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

1. To disable 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:

Note: When you are completely finished with the removal procedure and are satisfied that the threat has been removed, reenable System Restore by following the instructions in the aforementioned documents.

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. To update 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.

    If you use Norton AntiVirus 2006, Symantec AntiVirus Corporate Edition 10.0, or newer products, LiveUpdate definitions are updated daily. These products include newer technology.

    If you use Norton AntiVirus 2005, Symantec AntiVirus Corporate Edition 9.0, or earlier products, LiveUpdate definitions are updated weekly. The exception is major outbreaks, when definitions are updated more often.


  • Downloading the definitions using the Intelligent Updater: The Intelligent Updater virus definitions are posted daily. You should download the definitions from the Symantec Security Response Web site and manually install them.

The latest Intelligent Updater virus definitions can be obtained here: Intelligent Updater virus definitions . For detailed instructions read the document: How to update virus definition files using the Intelligent Updater .

3. To run a full system scan
  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, follow the instructions displayed by your antivirus program.
Important: If you are unable to start your Symantec antivirus product or the product reports that it cannot delete a detected file, you may need to stop the risk from running in order to remove it. To do this, run the scan in Safe mode. For instructions, read the document, How to start the computer in Safe Mode . Once you have restarted in Safe mode, run the scan again.
After the files are deleted, restart the computer in Normal mode and proceed with the next section.

Warning messages may be displayed when the computer is restarted, since the threat may not be fully removed at this point. You can ignore these messages and click OK. These messages will not appear when the computer is restarted after the removal instructions have been fully completed. The messages displayed may be similar to the following:

Title: [FILE PATH]
Message body: Windows cannot find [FILE NAME]. Make sure you typed the name correctly, and then try again. To search for a file, click the Start button, and then click Search.

4. To find and stop the service
  1. Click Start > Run.
  2. Type services.msc, and then click OK.
  3. Locate and select the service that was detected.
  4. Click Action > Properties.
  5. Click Stop.
  6. Change Startup Type to Manual.
  7. Click OK and close the Services window.
  8. Restart the computer.

5. To delete the value from the registry
Important: 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 subkeys only. For instructions refer to the document: How to make a backup of the Windows registry .
  1. Click Start > Run.
  2. Type regedit
  3. Click OK.

    Note: If the registry editor fails to open the threat may have modified the registry to prevent access to the registry editor. Security Response has developed a tool to resolve this problem. Download and run this tool, and then continue with the removal.

  4. Navigate to and delete the following registry entries:

    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"Windows Audio Service" = "%System%\sndmic32.exe"
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\"Windows Audio" = "%Windir%\snd.exe"
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\"Windows Audio" = "%Windir%\snd.exe"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}\"StubPath" = "\"%Windir%\snd.exe\""
    • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\"%System%\sndmic32.exe" = "%System%\sndmic32.exe:*:Enabled:Explorer"

  5. Navigate to and delete the following registry subkeys:

    • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SKYNET[EIGHT RANDOM CHARACTERS]
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\FXS
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\solashit2
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\sunshit2

  6. Restore the following registry entry to its previous value, if required:

    HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\SystemRestore\"DisableSR" = "1"

  7. Restore the following registry subkeys, if necessary:

    • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\wscsvc
    • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ERSvc
    • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_WSCSVC
    • HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_ERSVC

  8. Restore the following registry entries, if necessary:

    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"SBAMTray"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"sbamui"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"cctray"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"CAVRID"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"BDAgent"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"egui"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"avast!"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"AVG8_TRAY"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"ISTray"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"K7SystemTray"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"K7TSStart"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"SpIDerMail"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"DrWebScheduler"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"AVP"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"OfficeScanNT Monitor"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"SpamBlocker"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"Spam Blocker for Outlook Express"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"F-PROT Antivirus Tray application"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"RavTask"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"APVXDWIN"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"SCANINICIO"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"McENUI"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"MskAgentexe"
    • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\"Windows Defender"

  9. Exit the Registry Editor.

    Note: If the risk creates or modifies registry subkeys or entries under HKEY_CURRENT_USER, it is possible that it created them for every user on the compromised computer. To ensure that all registry subkeys or entries are removed or restored, log on using each user account and check for any HKEY_CURRENT_USER items listed above.

Writeup By: Hatsuho Honda and Fergal Ladley