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IE automatic start, default browser, b.exe

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4 replies to this topic

#1 curious_09


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Posted 11 October 2009 - 12:31 PM

It seems my system got infected by some worm which installed b.exe (as well as a.exe, c.exe, d.exe, e.exe & f.exe for that matter).

My AVG 8.5 was constantly alerting me of various cookies and infections which I vaulted and removed. I managed to remove the b.exe, etc. by running VISTA (Ultimate version) safe mode and changing attribute and deleting files. Any alerts regarding cookies and infections have stopped since then. I ran a AVG full scan later and it shows system as fully clean now.

However I still have the issue that even though I have Firefox as default browser every time I start Windows ie is starting (full size blank screen which also sets itself as default browser). I manage to kill the ie process from task manager as well ieuser.exe [if it shows up as running process]. :thumbsup:

My questions:

How do I get rid of the ie automatic start and changing browser default?
Are there any further cause of concern or am I just dealing with leftover annoyances?
How do I remove any remnants of the virus/trojan/malware?
Should I be concerned about my Firefox & Firefox password add-on utility security issues? (As the malware seems to be mainly ie related)

Thanks in advance

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#2 Computer Pro

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Posted 11 October 2009 - 06:10 PM

Hello and welcome to Bleeping Computer.

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Lets take a look with Malwarebytes

Please download Malwarebytes' Anti-Malware from here:
Please rename the file BEFORE downloading to zztoy.exe instead of mbam-setup.exe

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.

Double Click zztoy.exe to install the application.
* Make sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
* If an update is found, it will download and install the latest version.
* Once the program has loaded, select "Perform Full Scan", then click Scan.
* The scan may take some time to finish,so please be patient.
* When the scan is complete, click OK, then Show Results to view the results.
* Make sure that everything is checked, and click Remove Selected.
* When disinfection is completed, a log will open in Notepad and you may be prompted to Restart.(See Extra Note)
* The log is automatically saved by MBAM and can be viewed by clicking the Logs tab in MBAM.
* Copy&Paste the entire MBAM report (even if it does not find anything) in your next reply

Extra Note:
If MBAM encounters a file that is difficult to remove,you will be presented with 1 of 2 prompts,click OK to either and let MBAM proceed with the disinfection process, if asked to restart the computer, please do so immediately.

If Malwarebytes won't install or run

Some types of malware will disable MBAM and other security tools. If MBAM will not install, try renaming it. Right-click on the mbam-setup.exe file and change the .exe extension to .bat, .com, .pif, or .scr and then double-click on it to run.

If after installation, MBAM will not run, open the Malwarebytes' Anti-Malware folder in Program Files, right-click on mbam.exe and change the .exe as noted above. Then double-click on it to run.

Edited by Computer Pro, 11 October 2009 - 06:13 PM.

Computer Pro

#3 curious_09

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Posted 12 October 2009 - 06:46 PM

Please find the information below per your instructions:

Malwarebytes' Anti-Malware 1.41
Database version: 2775
Windows 6.0.6000

12/10/2009 7:14:25 PM
mbam-log-2009-10-12 (19-14-25).txt

Scan type: Full Scan (C:\|D:\|)
Objects scanned: 307989
Time elapsed: 2 hour(s), 48 minute(s), 7 second(s)

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

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CLASSES_ROOT\Typelib\{9233c3c0-1472-4091-a505-5580a23bb4ac} (Trojan.FakeAlert) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{500bca15-57a7-4eaf-8143-8c619470b13d} (Worm.Allaple) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\poprock (Trojan.Downloader) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\Users\Jim\AppData\Local\Temp\maccsnet.tmp (Trojan.Downloader) -> Quarantined and deleted successfully.
C:\Users\Jim\AppData\Local\Temp\incosnet.tmp (Rootkit.TDSS) -> Quarantined and deleted successfully.
C:\Users\Jim\AppData\Local\Temp\prun.tmp (Trojan.Downloader) -> Quarantined and deleted successfully.
C:\Users\Jim\AppData\Local\Temp\rasesnet.tmp (Rootkit.TDSS) -> Quarantined and deleted successfully.
C:\Users\Jim\AppData\Local\Temp\rasvsnet.tmp (Trojan.FakeAlert) -> Quarantined and deleted successfully.
C:\Users\Jim\AppData\Local\VirtualStore\Windows\System32\net.net (Trojan.Downloader) -> Quarantined and deleted successfully.
C:\Windows\Tasks\{BB65B0FB-5712-401b-B616-E69AC55E2757}.job (Trojan.Downloader) -> Quarantined and deleted successfully.


The ie self start remains as before. Also I notice a file running in the background at the same time iexplore.exe starts namely ieuser.exe.


Is the system fully clean now?
How do I get rid of the ie automatic start and changing browser default?
Should I be concerned about my Firefox & Firefox password add-on utility security issues? (As the malware seems to be mainly ie related) :thumbsup:

#4 curious_09

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Posted 13 October 2009 - 01:10 AM

Further more got this message from Vista Windows Defender:



Defender failed to remove it. How do I fix this?

#5 Computer Pro

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Posted 13 October 2009 - 08:16 PM

I think that we are dealing with a rootkit here.

Please install RootRepeal

Go HERE, and download RootRepeal.zip to your Desktop.
Tutorial with images ,if needed >> L@@K
Unzip that to your Desktop and then click RootRepeal.exe to open the scanner.

*Open the folder and double-click on RootRepeal.exe to launch it. If using Vista, right-click and Run as Administrator...
* Click on the FILES tab, then click the Scan button.
* In the Select Drives, dialog Please select drives to scan: select all drives showing, then click OK.
* When the scan has completed, a list of files will be generated in the RootRepeal window.
* Click on the Save Report button and save it as rootrepeal.txt to your desktop or the same location where you ran the tool from.
* Open rootrepeal.txt in Notepad and copy/paste its contents in your next reply.
* Exit RootRepeal and be sure to re-enable your anti-virus, Firewall and any other security programs you had disabled.

Please note: If Rootrepeal fails to run, try this step: Click Settings - Options. Set the Disk Access slider to High
Computer Pro

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