| May 4, 2007 @ 1:26 PM |
W32/Imaut.U Worm.. Virus Alert
|
|
Always_Striving
Posts: 7,592
|
It originates in Yahoo messenger (be aware about your friends sending you these linked IM's) W32/Imaut.U is a worm.
The worm will infect Windows systems and spreads via Yahoo! Instant Messenger, Microsoft Windows Live Messenger, and AOL Instant Messenger.
Upon execution, it downloads few files the following websites;
[http://]puzzlecircle . com/Gallery/albums/album/YM(Removed)
[http://]puzzlecircle . com/Gallery/albums/album/w(Removed)
These files are saved as svchost32.exe and svchost.exe in the Windows System folder.
It modifies the registry at the following locations;
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Control Panel
HKEY_CURRENT_USER\Software\Yahoo\pager\View\YMSGR_buzz
HKEY_CURRENT_USER\Software\Yahoo\pager\View\YMSGR_Launchcast
The worm tries to connect to: [http://]quicknews.info
It also tries to change the security settings of Yahoo! Instant Messenger, Windows Messenger or AOL Instant Messenger.
The worm sends one of the following Instant Messages to the members present in the contacts;
My pics [http://]quicknews.info/mypics[REMOVED] b-( << "
hot pics this week [http://]quicknews.info/hot[REMOVED] :x"
Miss World 2006: [http://]quicknews.info/MissWorld[REMOVED] !! "
;) 1 of my vacation pictures [http://]quicknews.info/vacation1[REMOVED] <:-P"
;) 1 of my vacation pictures [http://]quicknews.info/vacation2[REMOVED] <:-P "
Images shot in Iraq _ The war will never end [http://]quicknews.info/Iraqwar[REMOVED] << :("
oh my god , i've won a 20000 usd lottery :O [http://]quicknews.info/mylottery[REMOVED] << "
:D who is beside you in this pic [http://]quicknews.info/friendpic1[REMOVED] so good-looking"
Screenshot of new windows version _ Windows Vista [http://]quicknews.info/vista[REMOVED] so cool :D"
never click into the links like something in this image [http://]quicknews.info/dontclick[REMOVED] #:-S !!! "
Do you realize who is in this image: [http://]quicknews.info/who[REMOVED]. Just think for a moment and tell me soon ;))"
:( the page cannot be displayed [http://]quicknews.info/error[REMOVED] Something was wrong !!! Check it again and tell me later. THanks"
The worm may also terminate few security-related processes.
This worm first appeared on January 7, 2007.
Other names of W32/Imaut.U Worm:
This Worm is also known as W32.Imaut.U.
You may have a good virus protection software, but I alert people when a IM contact has told me their computer is infected....... Just in case you have outdated protection.
[Edited on 5/4/2007 1:42 PM]
|
|
  |
|
| May 4, 2007 @ 5:03 PM |
W32/Imaut.U Worm.. Virus Alert |
|
sealacamp
Posts: 3,136
|
Discovered: January 6, 2007
Updated: February 13, 2007 1:03:12 PM
Type: Worm
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP
When W32.Imaut.U is executed, it performs the following actions:
Downloads files from the following Web sites:
[http://]puzzlecircle.com/Gallery/albums/album/YM[REMOVED]
[http://]puzzlecircle.com/Gallery/albums/album/w[REMOVED]
Saves the above files in the following locations:
%System%\svchost32.exe
%System%\svchost.exe
Note: %System% is a variable that refers to the System folder. By default this is C:\Windows\System (Windows 95/98/Me), C:\Winnt\System32 (Windows NT/2000), or C:\Windows\System32 (Windows XP).
Adds the values:
"Task Manager" = "%Windir%\system\svchost.exe"
"Yahoo Messenger" = "%Windir%\system\svchost32.exe"
to the registry subkey:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
so that it runs every time Windows starts.
Adds the values:
"DisableTaskMgr" = "1"
"DisableRegistryTools" = "1"
to the registry subkey:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
to disable some Windows features.
Adds the value:
"NoRun" = "1"
to the registry subkey:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
Adds the value:
"Homepage" = "1"
to the registry subkey:
HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Control Panel
Adds the value:
"Start Page" = "[http://]quicknews.info"
to the registry subkey:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
to set a new homepage for Internet Explorer.
Adds the value:
"content url" = "[http://]quicknews.info"
to the registry subkeys:
HKEY_CURRENT_USER\Software\Yahoo\pager\View\YMSGR_buzz
HKEY_CURRENT_USER\Software\Yahoo\pager\View\YMSGR_Launchcast
to set a new homepage for Internet Explorer and Yahoo Messenger.
Finds windows that have "My Computer" or "Windows Explorer" as a window title and tries to connect to:
[http://]quicknews.info
Finds windows of Yahoo! Instant Messenger, Windows Messenger or AOL Instant Messenger and tries to change the security settings.
Sends one of the following Instant Messages to the members of the contacts list:
:D who is beside you in this pic [http://]quicknews.info/friendpic1[REMOVED] so good-looking"
;) 1 of my vacation pictures [http://]quicknews.info/vacation1[REMOVED] <:-P"
hot pics this week [http://]quicknews.info/hot[REMOVED] :x"
;) 1 of my vacation pictures [http://]quicknews.info/vacation2[REMOVED] <:-P "
Screenshot of new windows version _ Windows Vista [http://]quicknews.info/vista[REMOVED] so cool :D"
Images shot in Iraq _ The war will never end [http://]quicknews.info/Iraqwar[REMOVED] << :("
oh my god , i've won a 20000 usd lottery :O [http://]quicknews.info/mylottery[REMOVED] << "
never click into the links like something in this image [http://]quicknews.info/dontclick[REMOVED] #:-S !!! "
:( the page cannot be displayed [http://]quicknews.info/error[REMOVED] Something was wrong !!! Check it again and tell me later. THanks"
My pics [http://]quicknews.info/mypics[REMOVED] b-( << "
Miss World 2006: [http://]quicknews.info/MissWorld[REMOVED] !! "
Do you realize who is in this image: [http://]quicknews.info/who[REMOVED]. Just think for a moment and tell me soon ;))"
If a user clicks on the above links, the worm downloads a copy of itself on to the compromised computer and displays advertisements.
May try to click on Adbrite ads by maximizing and clicking any window with the following title:
Active marketing website for ads - Microsoft Internet Explorer
May try to end the following security-related processes:
Bkav2006.exe
IEProt.exe
bdss.exe
vsserv.exe
Redirects to the domain puzzlecircle.com when it connects to the following site:
[http://]quicknews.info
Uses Microsoft MDAC Function Broadcast Response Buffer Overrun Vulnerability (BID 9407) to download itself.
RecommendationsSymantec 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
|
| |
|
| May 4, 2007 @ 5:05 PM |
W32/Imaut.U Worm.. Virus Alert
|
|
sealacamp
Posts: 3,136
|
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.
Writeup By: Kazumasa Itabashi
http://www.symantec.com/security_response/writeup.jsp?docid=2007-010615-5630-99&tabid=2
S
|
|
| |
|
| May 6, 2007 @ 5:13 AM |
W32/Imaut.U Worm.. Virus Alert |
|
blueyes101
Posts: 8,306
|
If I have it, how can I check, and get rid of it?
|
| |
|
| May 6, 2007 @ 2:57 PM |
W32/Imaut.U Worm.. Virus Alert
|
|
sealacamp
Posts: 3,136
|
Well blue here is one company that says they can find it and remove it if you have it. No mention of cost but I am sure it is not free. I am also sure that there is a free removal tool like AVG or AVAST. You will have to do a little research to find out though. Anyway here is a link to a removal tool:
Remove W32/Imaut.U worm
S
|
|
| |
|
| May 10, 2007 @ 11:27 PM |
W32/Imaut.U Worm.. Virus Alert |
|
T_i_m
Posts: 809
|
If I have it, how can I check, and get rid of it?
Search for the files svchost.exe and svchost32.exe as a starting point.
Also, learn to browse your Registry. It's easy and just browsing does not make any changes.
If your system is compromised, you have some work to do. That is all I know about it.
|
| |
|
| May 13, 2007 @ 2:47 AM |
W32/Imaut.U Worm.. Virus Alert
|
|
blueyes101
Posts: 8,306
|
I went to the link sealacamp suggested, and downloaded the free trial, it showed no problems........My computer has been working very well lately, my thanks to all who helped.....
|
|
| |
|
| May 13, 2007 @ 1:54 PM |
W32/Imaut.U Worm.. Virus Alert |
|
sealacamp
Posts: 3,136
|
Keep your defenses up. There are vultures everywhere.
S
|
| |
|
| Jul 10, 2007 @ 12:56 AM |
W32/Imaut.U Worm.. Virus Alert
|
|
koyaanisqatsi
Posts: 115
|
If I have it, how can I check, and get rid of it?
Best way to get rid of it is by installing Linux.
|
|
| |
|
| Dec 18, 2007 @ 2:01 PM |
W32/Imaut.U Worm.. Virus Alert |
|
jay_m_h1
Posts: 25
|
Always run AntiVirus checks I recomend online scans you can find some here
http://www.matchdoctor.com/thread_91_18563_1/HOW_TO_FIX_YOUR_PC_from_SPYWARE_VIRUS_DIALLERS_BROWSER_HIJACKERS.html
yes the post was writting and made by me
The reason I recomend online scans is Because if your pc is already infected after installing new Antivirus it may or may not detect the virus or spyware its best if you still have online acess to run online scaners first then download and install fresh AntiVirus software after the pc has been cleaned and dis infected
These steps are not for novice pc user messing with the registry you can mess up your pc if you don't know what your doing
http://www.itconsultancy.org/spyware_Imaut.u.htm
|
| |
|
| Dec 18, 2007 @ 2:02 PM |
W32/Imaut.U Worm.. Virus Alert
|
|
jay_m_h1
Posts: 25
|
These steps are not for novice pc user messing with the registry you can mess up your pc if you don't know what your doing
http://www.itconsultancy.org/spyware_Imaut.u.htm
-----------------------------------------------------------------------------
Discovered: January 6, 2007
Updated: February 13, 2007 1:03:11 PM
Type: Worm
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP
The following instructions pertain to all current and recent Symantec antivirus products, including the Symantec AntiVirus and Norton AntiVirus product lines.
Disable System Restore (Windows Me/XP).
Update the virus definitions.
Run a full system scan.
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:
How to disable or enable Windows Me System Restore
How to turn off or turn on Windows XP System Restore
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. To determine whether definitions for this threat are available by the Intelligent Updater, refer to Virus Definitions (Intelligent Updater).
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
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.
Run a full system scan.
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.
|
|
| |
|
| Dec 18, 2007 @ 2:03 PM |
W32/Imaut.U Worm.. Virus Alert |
|
jay_m_h1
Posts: 25
|
4. 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.
Click Start > Run.
Type regedit
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.
Navigate to the subkey:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
In the right pane, delete the values:
"Task Manager" = "%Windir%\svchost.exe"
"Yahoo Messenger" = "%Windir%\system\svchost32.exe"
Navigate to the subkey:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
In the right pane, delete the value:
"NoRun" = "1"
Navigate to the subkey:
HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Control Panel
In the right pane, delete the value:
"Homepage" = "1"
Navigate to the subkey:
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System
In the right pane, restore the original values:
"DisableTaskMgr" = "1"
"DisableRegistryTools" = "1"
Navigate to the subkey:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
In the right pane, restore the following entry to its previous value:
"Start Page" = "[http://]quicknews.info"
Navigate to the subkeys:
HKEY_CURRENT_USER\Software\Yahoo\pager\View\YMSGR_buzz
HKEY_CURRENT_USER\Software\Yahoo\pager\View\YMSGR_Launchcast
In the right pane, delete the value:
"content url" = "[http://]quicknews.info"
Exit the Registry Editor.
http://www.symantec.com/security_response/writeup.jsp?docid=2007-010615-5630-99&tabid=3
Writeup By: Kazumasa Itabashi
|
| |
|
|
|
|