PDA

View Full Version : My computer has a virus/worm



Bradley G
12-18-2006, 07:15 AM
Can someone share with me how to rid my computer of this.
Pretend I'm an,.....:help:
I have Windows XP
I have this displayed in my photos Brontok.A[18].Norbet.
I tried to delete it but it is in the memory. Looks like it's fuged up in my Pics.
Can it, (virus) destroy a memory stick?
I have two now, that read "file error" no worky:depress:

Maybe a link through my email ;bsarco31@comcast.net that step by step Tells me safe startup and toubleshooting.
thanks in advance to computer savy folks

ckadiddle
12-18-2006, 07:23 AM
Can it, (virus) destroy a memory stick?

Unlikely to ruin the stick, but yes a virus can certainly ruin all the data on the stick.

silver_2000
12-18-2006, 07:57 AM
http://vil.nai.com/vil/content/v_136318.htm

First you need a good antivirus program that is updated
If you can unhook the PC from the net - that way you no longer be spamming all your friends

Looking at the details from the link above you will need a second computer to be able to dload any antivirus if you dont all ready have one.

Scan and clean
reboot
scan again
Dload spybot and ad aware and scan with them
Reboot scan again

Links to Spybot, adaware and AVG antivirus here
http://bosshelp.com/bosshelp.htm

Doug


W32/Rontokbro.gen is a mass mailing worm which attempts to send a copy of itself to email addresses harvested from the computer.
The characteristics of this worm, with regard to file names, folders created, port numbers used, etc, will differ from one variant to another. Hence, this is a general description.
When executed, the following actions are performed by this worm:
1. It modifies various windows explorer settings. This includes the removal of the “Folder Options” item from all Windows Explorer menus.

Hkey_Current_User\Software\Mic rosoft\Windows\CurrentVersion
\Policies\Explorer\
Data: NoFolderOptions = 1 2. It overwrites the file “C:\autoexec.bat” to include the line "pause".

This is so Win9x & WinME systems will pause at each Windows start up 3. It drops a copy of itself along with other files into the following folders:

%System%\Administrator's Setting.scr
%UserProfile%\Appdata\BronFold NetDomList.txt
%UserProfile%\Appdata\csrss.ex e
%UserProfile%\Appdata\inetinfo .exe
%UserProfile%\Appdata\Kosong.B ron.Tok.txt
%UserProfile%\Appdata\ListHost 8.txt
%UserProfile%\Appdata\lsass.ex e
%UserProfile%\Appdata\NetMailT mp.bin
%UserProfile%\Appdata\services .exe
%UserProfile%\Appdata\smss.exe
%UserProfile%\Appdata\Update.8 .Bron.Tok.bin
%UserProfile%\Appdata\Update.A N.8.A.Bron.Tok
%UserProfile%\Appdata\winlogon .exe
%UserProfile%\ Start Menu\Programs\Startup\Empty.pi f
%UserProfile%\Templates\WowTum peh.com Note:
%UserProfile% is a variable location and refers to the user's profile folder.
%System% is a variable location and refers to the windows system directory.
4. It modifies the following registry entries to run at system startup:

HKEY_Current_User\Software\Mic rosoft\Windows\
CurrentVersion\Run "Tok-Cirrhatus-3444"
Data: "C:\Documents and Settings\Administrator\Local Settings
\Application Data\br7911on.exe"
HKEY_Local_Machine\Software\Mi crosoft\Windows\
CurrentVersion\Run "Bron-Spizaetus"
Data: "C:\Windows\ShellNew\RakyatKela paran.exe" 5. It modifies the HOSTS file to re-direct security related websites to 127.4.7.4 address.
The following is a brief list of redirected websites:

mcafee.com
nai.com
kaspersky.com
grisoft.com
norton.com
symantec.com
norman.com
trendmicro.com
sophos.com
perantivirus.com
virusalert.nl
antivirus.pagina.nl
virustotal.com Redirecting network traffic for these URLs to the Local-host leads to the user not being able to browse the WebPages belonging to these domains.
6. When it detects a window whose title contains the string “exe” the worm reboots the machine.
7. It scans for open Network Shares and copies itself into the folders found. The file name becomes the name of the folder into which it was copied.
8. It adds a task to the “Windows Task Scheduler” to execute itself at 5:08 PM every day.
Miscellaneous Information:

This worm is written in Visual Basic
It uses the windows “Folder Icon” as its icon. This is to trick users into opening it, effectively executing the worm
Upon execution, it opens an “Explorer” window in an attempt to hide its process
In order to make the dropped files harder to find, the files have their attributes changed to hidden/system files
It disables Registry editing tools

mtenderenda
12-18-2006, 08:20 AM
Okay here is the info on your virus....I'm a computer tech..Doesn't look that bad as you think..lt's a low level threat...Plus if you look...The names look different but they are the same....
I found this at Symantec.com:banana:
W32.Rontokbro@mm

Risk Level 2: Low

Printer Friendly Page (http://www.symantec.com/security_response/writeup.jsp?docid=2005-092311-2608-99&tabid=3#)

SUMMARY (http://www.symantec.com/security_response/writeup.jsp?docid=2005-092311-2608-99&tabid=1)
TECHNICAL DETAILS (http://www.symantec.com/security_response/writeup.jsp?docid=2005-092311-2608-99&tabid=2)
REMOVAL (http://www.symantec.com/security_response/writeup.jsp?docid=2005-092311-2608-99&tabid=3)Discovered: September 23, 2005
Updated: October 3, 2005 03:48:13 PM PDT
Type: Worm
Infection Length: 102,400 bytes
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 and delete all the files detected.
Use the Security Response "Tool to reset shell\open\command registry subkeys."
Delete any values added to the registry.
Delete the scheduled task.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 (http://service1.symantec.com/SUPPORT/tsgeninfo.nsf/docid/2001012513122239?OpenDocument&src=sec_doc_nam)
How to turn off or turn on Windows XP System Restore (http://service1.symantec.com/SUPPORT/tsgeninfo.nsf/docid/2001111912274039?OpenDocument&src=sec_doc_nam)
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 (http://support.microsoft.com/support/kb/articles/Q263/4/55.ASP) (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: 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 Virus Definitions (LiveUpdate) (http://www.symantec.com/security_response/writeup.jsp?docid=2005-092311-2608-99&tabid=3#protection).
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) (http://www.symantec.com/security_response/writeup.jsp?docid=2005-092311-2608-99&tabid=3#protection).

The latest Intelligent Updater virus definitions can be obtained here: Intelligent Updater virus definitions (http://securityresponse.symantec.com/avcenter/defs.download.html). [/URL]For detailed instructions read the document: [URL="http://service1.symantec.com/SUPPORT/nav.nsf/docid/1998082013035306?OpenDocument&src=sec_doc_nam"]How to update virus definition files using the Intelligent Updater (http://securityresponse.symantec.com/avcenter/defs.download.html).

3. To scan for and delete the infected files
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 (http://service1.symantec.com/SUPPORT/nav.nsf/docid/1999110513272906?OpenDocument&src=sec_doc_nam).
For Symantec AntiVirus Enterprise products: Read the document: How to verify that a Symantec Corporate antivirus product is set to scan all files (http://service1.symantec.com/SUPPORT/ent-security.nsf/docid/2002052213125148?OpenDocument&src=sec_doc_nam).
Run a full system scan.
If any files are detected, click Delete.
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 (http://service1.symantec.com/SUPPORT/tsgeninfo.nsf/docid/2001052409420406?OpenDocument&src=sec_doc_nam). 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: <TT>[FILE PATH]</TT>
Message body: <TT>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.</TT>


4. Using the Security Response "Tool to reset shell\open\command registry subkeys."
This risk makes changes to the Windows registry that may prevent you from running executable files. Security Response has developed a tool to reset these values to the default settings. This tool (http://securityresponse.symantec.com/avcenter/venc/data/tool.to.reset.shellopencommand .registry.keys.html)is the easiest way to fix this. Once you have run the tool (http://securityresponse.symantec.com/avcenter/venc/data/tool.to.reset.shellopencommand .registry.keys.html), return to this page and continue with the removal.


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. (http://service1.symantec.com/SUPPORT/tsgeninfo.nsf/docid/199762382617?OpenDocument&src=sec_doc_nam)

Click Start > Run.
Type<TT> </TT><TT>regedit</TT>
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 (http://securityresponse.symantec.com/avcenter/venc/data/tool.to.reset.shellopencommand .registry.keys.html) to resolve this problem. Download and run this tool (http://securityresponse.symantec.com/avcenter/venc/data/tool.to.reset.shellopencommand .registry.keys.html), and then continue with the removal.
Navigate to the subkey:

<TT>HKEY_LOCAL_MACHINE\SOFTWARE\Mi crosoft\Windows\CurrentVersion \Run

</TT>
In the right pane, delete the value:

<TT>"Bron-Spizaetus" = "C:\WINDOWS\PIF\CVT.exe"</TT>
Exit the Registry Editor.
6. To delete the scheduled tasks added by the worm Click Start, and then click Control Panel. (In Windows XP, switch to Classic View.)
In the Control Panel window, double click Scheduled Tasks.
Right click the task icon and select Properties from pop-up menu.
The properties of the task is displayed.
Delete the task if the contents of the Run text box in the task pane, matches the following:%UserProfile%\Templa tes\A.kotnorB.com

silver_2000
12-18-2006, 08:28 AM
Okay here is the info on your virus....I'm a computer tech..Doesn't look that bad as you think..lt's a low level threat...Plus if you look...The names look different but they are the same....


I would disagree
Its a HIGH level threat to him since he HAS it


Any mass emailer is BAD - 90% of the spam you get is from PCs like his
Any virus that screws up your network settings to keep you from removing it is BAD
Any virus that breaks regedit so you cant remove it is bad
any virus that puts the command PAUSE in your autoexec.bat file is trying really hard to screw up your PC
This one is NO fun

MM03MOK
12-18-2006, 08:31 AM
Bradley - you have access to McAfee VirusScan at no charge.

http://us.mcafee.com/root/landingpages/afflandpage.asp?affid=108&lpname=vso_1YrTrial&cid=13806

Also McAfee Personal Firewall Plus at no charge

http://us.mcafee.com/root/landingpages/afflandpage.asp?affid=108&lpname=mpfp_1YrTrial&cid=13807

mtenderenda
12-18-2006, 08:44 AM
I'm not saying that its not that bad...Symantec is saying that its a LOW LEVEL threat...Take a look yourself silver_2000:cool: .......