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I Think My Computer Is Infected.


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5 replies to this topic

#1 LuvsZoomer

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Posted 29 July 2008 - 06:13 AM

I have two files in the root of my c drive. They are 1.exe and 2.exe. I have googled these and have read and read and read, some articles say it is a registry error but most say they are trojans or viruses. Norton's antivirus scans everynight and finds no infections.

Please if anyone can tell me what to do, I would greatly appreciate it.


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#2 quietman7

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Posted 29 July 2008 - 11:44 AM

Do they show up in Task Manager?

Anytime you come across a suspicious file for which you cannot find any information about, the file has a legitimate name but is not located where it is supposed to be, or you want a second opinion, submit it to jotti's virusscan or virustotal.com. In the "File to upload & scan" box, browse to the location of the suspicious file and submit (upload) it for scanning/analysis.
-- Post back with the results of the file analysis.
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#3 LuvsZoomer

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Posted 03 August 2008 - 10:31 AM

no, they do not show up in task manager. Uploaded the file to be scanned and these are the results.

Scan taken on 03 Aug 2008 15:12:27 (GMT)
A-Squared
Found nothing
AntiVir
Found nothing
ArcaVir
Found nothing
Avast
Found nothing
AVG Antivirus
Found nothing
BitDefender
Found nothing
ClamAV
Found nothing
CPsecure
Found nothing
Dr.Web
Found nothing
F-Prot Antivirus
Found nothing
F-Secure Anti-Virus
Found nothing
Fortinet
Found nothing
Ikarus
Found nothing
Kaspersky Anti-Virus
Found nothing
NOD32
Found nothing
Norman Virus Control
Found nothing
Panda Antivirus
Found nothing
Sophos Antivirus
Found nothing
VirusBuster
Found nothing
VBA32
Found nothing

Scanner Malware name
A-Squared X
AntiVir X
ArcaVir X
Avast X
AVG Antivirus X
BitDefender X
ClamAV X
CPsecure X
Dr.Web X
F-Prot Antivirus X
F-Secure Anti-Virus X
Fortinet X
Ikarus Virus.Win32.Trojan
Kaspersky Anti-Virus X
NOD32 X
Norman Virus Control X
Panda Antivirus HackTool/CloseW.A
Sophos Antivirus X
VirusBuster X
VBA32 X

the latter results were at the bottom of the scan page, I am assuming i was suppose to post these also.

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#4 quietman7

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Posted 04 August 2008 - 08:02 AM

If either of those files were in the Windows directory or in temp folders and running as startup processes, they would definitely be malware.

Determining whether a file is malware or a legitimate process sometimes depends on the location (path) it is running from. However, the fact they are both in the root and that nothing was found by the oneline virus scan is puzzeling as I cannot find any legit programs with those names.

Viruslist.com indicates that C:\1.exe is Trojan-Downloader.JS.Agent.ex and MBAM detects it as a Trojan.Agent. McAfee identifies both C:\1.exe, C:\2.exe as related to PWS-LegMir.gen.g and Symantec identifies them as related to W32.Fubalca.I so lets remove both.

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself.
  • Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply and exit MBAM.
Note: If MBAM encounters a file that is difficult to remove, you may be asked to reboot your computer so it can proceed with the disinfection process. Reagardless if prompted to restart the computer or not, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

If MBAM does not find and remove them, then use it's built-in FileAssassin feature for removing stubborn malware files.
  • Go to the "More Tools" tab and click on the "Run Tool" button
  • Browse to the location of the file(s) to remove using the drop down box next to "Look in:" at the top.
  • When you find the file(s), click "Open".
  • You will be prompted with a message warning: This file will be permanently deleted. Are you sure you want to continue?. Click Yes.
  • If removal did not require a reboot, you will receive a message indicating the file was deleted successfully, however, I recommend you reboot anyway.

Caution: Be careful what you delete. FileAssassin is a powerful program, designed to move highly persistent files. Using it incorrectly could lead to disastrous problems with your operating system.


Edited by quietman7, 04 August 2008 - 08:49 AM.

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#5 LuvsZoomer

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Posted 04 August 2008 - 04:29 PM

ok, i downloaded the program mbam, ran the scan. it found several things, one of which was the 1.exe file. It did not find anything pertaining to the 2.exe file. I let it delete what it found and then i used the file assassian to browse to the file 2.exe and let it delete it. I have searched on google.com and found refrences to TROJAN.W32.Lineage being related to the 2.exe file. Also, I had seen where the 1.exe file was supposedly W32.Beagle.AY@mm virus. I had already gotten the fix tool for this and had run it in safe mode and regular mode and it said i was not infected with this virus, I did this before I found this forum.

This morning before I read your latest post to me I had done a search in regedit and I found refrences to both the trojan and virus mentioned above. After running mbam, i searched regedit again and those refrences are still there. Now my question is this: what do i do about those, anything?

Now is the logfile from mbam:

Malwarebytes' Anti-Malware 1.24
Database version: 1025
Windows 5.1.2600 Service Pack 2

4:20:23 PM 8/4/2008
mbam-log-8-4-2008 (16-20-23).txt

Scan type: Quick Scan
Objects scanned: 39781
Time elapsed: 3 minute(s), 29 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 1
Registry Values Infected: 1
Registry Data Items Infected: 0
Folders Infected: 3
Files Infected: 7

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CURRENT_USER\SOFTWARE\AdwareAlert (Rogue.AdwareAlert) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft WinUpdate (Backdoor.Bot) -> Quarantined and deleted successfully.

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
C:\Documents and Settings\Debbie\Application Data\AdwareAlert (Rogue.AdwareAlert) -> Quarantined and deleted successfully.
C:\Documents and Settings\Debbie\Application Data\AdwareAlert\Log (Rogue.AdwareAlert) -> Quarantined and deleted successfully.
C:\Documents and Settings\Debbie\Application Data\AdwareAlert\Settings (Rogue.AdwareAlert) -> Quarantined and deleted successfully.

Files Infected:
C:\Documents and Settings\Debbie\Application Data\AdwareAlert\rs.dat (Rogue.AdwareAlert) -> Quarantined and deleted successfully.
C:\Documents and Settings\Debbie\Application Data\AdwareAlert\Log\2007 Dec 30 - 09_40_01 AM_359.log (Rogue.AdwareAlert) -> Quarantined and deleted successfully.
C:\Documents and Settings\Debbie\Application Data\AdwareAlert\Log\2007 Dec 30 - 09_40_04 AM_046.log (Rogue.AdwareAlert) -> Quarantined and deleted successfully.
C:\Documents and Settings\Debbie\Application Data\AdwareAlert\Settings\ScanResults.pie (Rogue.AdwareAlert) -> Quarantined and deleted successfully.
C:\1.exe (Trojan.Agent) -> Quarantined and deleted successfully.
C:\WINDOWS\system32\msupdte.exe (Backdoor.Bot) -> Quarantined and deleted successfully.
C:\WINDOWS\Tasks\AdwareAlert Scheduled Scan.job (Trojan.Downloader) -> Quarantined and deleted successfully.


Thanks for pointing me in the direction of mbam, it did delete those two files and they do not reappear once I reboot, I have rebooted several times to make sure, but I would still like to know what to do as far as the refrences in the regedit.

Luvs

#6 quietman7

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Posted 07 August 2008 - 07:10 AM

One or more of the identified infections (msupdte.exe) was a backdoor Trojan. Backdoor Trojans, IRCBots and Infostealers are very dangerous because they provide a means of accessing a computer system that bypasses security mechanisms and steal sensitive information like passwords, personal and financial data which they send back to the hacker. Remote attackers use backdoor Trojans as part of an exploit to gain unauthorized access to a computer and take control of it without your knowledge. Read Danger: Remote Access Trojans.

If your computer was used for online banking, has credit card information or other sensitive data on it, all passwords should be changed immediately to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised. They should be changed by using a different computer and not the infected one. If not, an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified of the possible security breach. Because your computer was compromised please read How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?

Although the backdoor Trojan was identified and removed, your PC has likely been compromised and there is no way to be sure the computer can ever be trusted again. It is dangerous and incorrect to assume that because the backdoor Trojan has been removed the computer is now secure. Further, in some instances an infection may have caused so much damage to your system that it cannot be completely cleaned or repaired. The malware may leave so many remnants behind that security tools cannot find them. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Please read:

"When should I re-format? How should I reinstall?"
"Help: I Got Hacked. Now What Do I Do?"
"Where to draw the line? When to recommend a format and reinstall?"

Should you decide not to follow that advice, we will do our best to help clean the computer of any infections but we cannot guarantee it to be trustworthy or that the removal will be successful.

Some infections are difficult to remove completely because of their morphing characteristics which allows the malware to regenerate itself. Because of the nature of this infection, I recommend further investigation. Before that can be done you will need you to create and post a hijackthis log.

Please read the pinned topic titled "Preparation Guide For Use Before Posting A Hijackthis Log" and complete all the steps. There are instructions for downloading and running Deckard's System Scanner (DSS) which will create a hijackthis log for you, or automatically download and install the most current version of HijackThis if it's not already installed on your computer.

When you have done that, post your log in the HijackThis Logs and Malware Removal forum, NOT here, for assistance by the HJT Team Experts. A member of the Team will walk you through, step by step, on how to clean your computer. If you post your log back in this thread, the response from the HJT Team will be delayed because your post will have to be moved. This means it will fall in line behind any others posted that same day.

Start a new topic, give it a relevant title and post your log along with a brief description of your problem, a summary of any anti-malware tools you have used and a summary of any steps that you have performed on your own. An expert will analyze your log and reply with instructions advising you what to fix. After doing this, we would appreciate if you post a link to your log back here so we know that your getting help from the HJT Team.

Please be patient. It may take a while to get a response because the HJT Team members are very busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have made your post and are waiting, please DO NOT "bump" your post or make another reply until it has been responded to by a member of the HJT Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another HJT Team member is already assisting you and not open the thread to respond.
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