BleepingComputer.com: RegAsm32.exe?

Hello, Comodo firewall recently found an exe trying to connect to the internet. The application's name is RegAsm32.exe and is located in C:\Users\Spec\AppData\Local\Temp\{031F49AD-508D-491B-BC49-154FD0229E3F}\RegAsm32.exe. The source IP is the same as my IPv4 address. Should I be worried? Thanks in advance.

This post has been edited by hamluis: 12 March 2011 - 02:56 PM
Reason for edit: Moved from Vista forum to Am I Infected.

seems to have to do with a dotnet application. scan file with virus scanner.

Well...it's possible malware, according to some...and the location would make me suspicious.

I'm moving this to Am I Infected where someone can take a deeper look.

Louis

What if you trying uploading the file to VirusTotal?

Hello, this is a malware,probably a zbot meaning it steals personal info. You will need to change all passwords.

Next run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware and save it to your desktop.

Download Link 1
Download Link 2

MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.

• Make sure you are connected to the Internet.
  
• Double-click on mbam-setup.exe to install the application.
  For instructions with screenshots, please refer to the How to use Malwarebytes' Anti-Malware Guide.
  
• 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 definition 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. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  
• Exit MBAM when done.

Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

Troubleshoot Malwarebytes' Anti-Malware


TFC by OT (Temp File Cleaner)
Please download TFC by Old Timer and save it to your desktop.
alternate download link

Save any unsaved work. TFC will close ALL open programs including your browser!
Double-click on TFC.exe to run it. If you are using Vista, right-click on the file and choose Run As Administrator.
Click the Start button to begin the cleaning process and let it run uninterrupted to completion.
Important! If TFC prompts you to reboot, please do so immediately. If not prompted, manually reboot the machine anyway to ensure a complete clean.

Now do a Safe Mode scan with SAS:

Please download and scan with SUPERAntiSpyware Free

• Double-click SUPERAntiSypware.exe and use the default settings for installation.
  
• An icon will be created on your desktop. Double-click that icon to launch the program.
  
• If it will not start, go to Start > All Prgrams > SUPERAntiSpyware and click on Alternate Start.
  
• If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here. Double-click on the hyperlink for Download Installer and save SASDEFINITIONS.EXE to your desktop. Then double-click on SASDEFINITIONS.EXE to install the definitions.)
  
• In the Main Menu, click the Preferences... button.
  
• Click the "General and Startup" tab, and under Start-up Options, make sure "Start SUPERAntiSpyware when Windows starts" box is unchecked.
  
• Click the "Scanning Control" tab, and under Scanner Options, make sure the following are checked (leave all others unchecked):
  • Close browsers before scanning.
    
  • Scan for tracking cookies.
    
  • Terminate memory threats before quarantining.
• Click the "Close" button to leave the control center screen and exit the program.
  
• Do not run a scan just yet.

Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Scan with SUPERAntiSpyware as follows:

• Launch the program and back on the main screen, under "Scan for Harmful Software" click Scan your computer.
  
• On the left, make sure you check C:\Fixed Drive.
  
• On the right, under "Complete Scan", choose Perform Complete Scan and click "Next".
  
• After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  
• Make sure everything has a checkmark next to it and click "Next".
  
• A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  
• If asked if you want to reboot, click "Yes" and reboot normally.
  
• To retrieve the removal information after reboot, launch SUPERAntispyware again.
  • Click Preferences, then click the Statistics/Logs tab.
    
  • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
    
  • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
    
  • Please copy and paste the Scan Log results in your next reply.
• Click Close to exit the program.

If you have a problem downloading, installing or getting SAS to run, try downloading and using the SUPERAntiSpyware Portable Scanner instead. Save the randomly named file (i.e. SAS_1710895.COM) to a usb drive or CD and transfer to the infected computer. Then double-click on it to launch and scan. The file is randomly named to help keep malware from blocking the scanner.

Please post the logs and tell me how it's running.

I don't think the file is there anymore since it is in the Temp folder.

MBAM quick scan in normal boot.

Malwarebytes' Anti-Malware 1.50.1.1100
www.malwarebytes.org

Database version: 6039

Windows 6.0.6002 Service Pack 2
Internet Explorer 8.0.6001.19019

13/3/2011 11:59:56 AM
mbam-log-2011-03-13 (11-59-56).txt

Scan type: Quick scan
Objects scanned: 140124
Time elapsed: 2 minute(s), 22 second(s)

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

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)

I did not run TFC since MBAM did not have any problems installing, updating and scanning. I'll post the SAS scan log in the next post.

Drives E,F,G,H,I removable are unchecked. Only C and D drives are checked

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 03/13/2011 at 01:16 PM

Application Version : 4.49.1000

Core Rules Database Version : 6585
Trace Rules Database Version: 4397

Scan type : Complete Scan
Total Scan Time : 00:50:54

Memory items scanned : 277
Memory threats detected : 0
Registry items scanned : 6098
Registry threats detected : 0
File items scanned : 131515
File threats detected : 4

Adware.Tracking Cookie
C:\Users\Spec\AppData\Roaming\Microsoft\Windows\Cookies\spec@atdmt.combing[2].txt
C:\Users\Spec\AppData\Roaming\Microsoft\Windows\Cookies\spec@atdmt[2].txt
www.cracked.com [ C:\Users\Spec\AppData\Roaming\Mozilla\Firefox\Profiles\g2qla42o.default\cookies.sqlite ]
www.cracked.com [ C:\Users\Spec\AppData\Roaming\Mozilla\Firefox\Profiles\g2qla42o.default\cookies.sqlite ]

Weird... Comodo didn't ask if I wanted to allow SSUpdate after first installing and updating it... Only after I finished my first scan in safe mode and rebooted.

Computer is runing fine.

EDIT : I blocked the RegAsm32.exe file using Comodo firewall when it first popped up. It popped up when i was uninstalling one of Cyberlink's software, in case this piece if info might be of any use. Don't know if it is related to Cyberlink or just a coincidence.

This post has been edited by tarkovsky: 13 March 2011 - 04:20 AM

Ok, I just wanted to clean out any infected or useless Temp files. Looks good now.

If there are no more problems or signs of infection, you should Create a New Restore Point to prevent possible reinfection from an old one. Some of the malware you picked up could have been saved in System Restore. Since this is a protected directory your tools cannot access to delete these files, they sometimes can reinfect your system if you accidentally use an old restore point. Setting a new restore point AFTER cleaning your system will help prevent this and enable your computer to "roll-back" to a clean working state.

The easiest and safest way to do this is:

• Go to Start > Programs > Accessories > System Tools and click "System Restore".
  
• Choose the radio button marked "Create a Restore Point" on the first screen then click "Next". Give the R.P. a name, then click "Create". The new point will be stamped with the current date and time. Keep a log of this so you can find it easily should you need to use System Restore.

• Then use Disk Cleanup to remove all but the most recently created Restore Point.
  
• Go to Start > Run and type: Cleanmgr
  
• Click "Ok". Disk Cleanup will scan your files for several minutes, then open.
  
• Click the "More Options" tab, then click the "Clean up" button under System Restore.
  
• Click Ok. You will be prompted with "Are you sure you want to delete all but the most recent restore point?"
  
• Click Yes, then click Ok.
  
• Click Yes again when prompted with "Are you sure you want to perform these actions?"
  
• Disk Cleanup will remove the files and close automatically.

Vista Users can refer to these links: Create a New Restore Point and Disk Cleanup.

Tips to protect yourself against malware and reduce the potential for re-infection:

• Simple and easy ways to keep your computer safe.
  
• How did I get infected?, With steps so it does not happen again!.
  
• Hardening Windows Security - Part 1 & Part 2.
  
• Configuring Internet Explorer for Practical Security and Privacy - How to Secure Your Web Browser.
  
• Your Guide To Staying Safe Online.
  
• Use Task Manager to close pop-up messages to safely exit malware attacks.

• Avoid gaming sites, pirated software, cracking tools, keygens, and peer-to-peer (P2P) file sharing programs. They are a security risk which can make your computer susceptible to a smörgåsbord of malware infections, remote attacks, exposure of personal information, and identity theft. Many malicious worms and Trojans spread across P2P file sharing networks, gaming and underground sites. Users visiting such pages may see innocuous-looking banner ads containing code which can trigger pop-up ads and malicious Flash ads that install viruses, Trojans and spyware. Ads are a target for hackers because they offer a stealthy way to distribute malware to a wide range of Internet users. The best way to reduce the risk of infection is to avoid these types of web sites and not use any P2P applications. Read P2P Software User Advisories and Risks of File-Sharing Technology.

• Keeping Autorun enabled on USB and other removable drives has become a significant security risk due to the increasing number of malware variants that can infect them and transfer the infection to your computer. To learn more about this risk, please read:

• USB-Based Malware Attacks.
  
• When is AUTORUN.INF really an AUTORUN.INF?.
  
• Please disable Autorun asap!.

Hello,

I have deleted all existing RPs and created a new one. I have disabled all USB ports on my computer and disabled file sharing as well and I do not use any P2P programs or illegal software. In addition to that, I have installed Noscript, AV software and a firewall the very instant I installed a fresh copy of windows. I also check mywot for site ratings before I click on any links or visit any websites i have never heard of.

How was I infected even when I am super cautious? Was I even infected in the first place? If I was, is my computer fine now?

Thanks for all your help.

Should I create a thread in the malware removal help forum to make sure I am not infected?

This post has been edited by tarkovsky: 14 March 2011 - 09:42 AM

Other ways other than those mentioned in the link above,How did I get infected? Are Not having,windows,Java and Adobe fully updated. Also some malware just maybe that new and the AV tools are adding them to the next update,so at the moment we are open.

This is a handy tool.
How to detect vulnerable and out-dated programs using Secunia Personal Software Inspector

Quote

I never say no to this.

You're welcome from all of us.

Malware topic here: http://www.bleepingcomputer.com/forums/topic385087.html

Now that your log is properly posted, you should NOT make further changes to your computer (install/uninstall programs, use special fix tools, delete files, edit the registry, etc) unless advised by a Malware Removal Team member, nor should you continue to ask for help elsewhere. Doing so can result in system changes which may not show it the log you already posted. Further, any modifications you make on your own may cause confusion for the helper assisting you and could complicate the malware removal process which would extend the time it takes to clean your computer.

From this point on the Malware Removal Team should be the only members that you take advice from, until they have verified your log as clean.

Please be patient. It may take a while to get a response because the Malware Removal 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 make another reply until it has been responded to by a member of the Malware Removal 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 MR Team member is already assisting you and not open the thread to respond.

To avoid confusion, I am closing this topic.