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internet redirect trojan

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2 replies to this topic

#1 chewface717


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Posted 16 June 2011 - 05:16 AM

so i got the nasty redirect virus, and need a walk through how to get rid of it, i currently use malwarebytes and it seems to pick it up but it always comes back after restart. did some looking around and seems like its the same one that infected the firefox files or something like that anyway here is my logs, thanks for ur help guys.

Malwarebytes' Anti-Malware

Database version: 6862

Windows 6.1.7600
Internet Explorer 8.0.7600.16385

6/16/2011 3:56:47 AM
mbam-log-2011-06-16 (03-56-47).txt

Scan type: Quick scan
Objects scanned: 164783
Time elapsed: 3 minute(s), 7 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 1
Registry Keys Infected: 2
Registry Values Infected: 0
Registry Data Items Infected: 1
Folders Infected: 0
Files Infected: 1

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
c:\programdata\api-ms-win-core-misc-l1-1-032.dll (Trojan.Tracur.Gen) -> Delete on reboot.

Registry Keys Infected:
HKEY_CLASSES_ROOT\CLSID\{61148E87-A3D2-3431-16DA-C221B229B3F2} (Trojan.Tracur.Gen) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{61148E87-A3D2-3431-16DA-C221B229B3F2} (Trojan.Tracur.Gen) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\AppInit_DLLs (Trojan.Tracur.Gen) -> Bad: (C:\ProgramData\api-ms-win-core-misc-l1-1-032.dll) Good: () -> Quarantined and deleted successfully.

Folders Infected:
(No malicious items detected)

Files Infected:
c:\programdata\api-ms-win-core-misc-l1-1-032.dll (Trojan.Tracur.Gen) -> Quarantined and deleted successfully.

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#2 quietman7


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Posted 16 June 2011 - 06:44 AM

Before doing anything further, if you have not already done so, you should back up all your important documents, personal data files and photos to a CD or DVD drive as some infections may render your computer unbootable during or before the disinfection process. If that occurs there may be no option but to reformat and reinstall the OS or perform a full system recovery. The safest practice is not to backup any files with the following file extensions: exe, .scr, .ini, .htm, .html, .php, .asp, .xml, .zip, .rar, .cab as they may be infected.
Now rescan again with Malwarebytes Anti-Malware, but this time perform a Full Scan in normal mode and check all items found for removal. Don't forgot to check for database definition updates through the program's interface (preferable method) before scanning and to reboot afterwards. Failure to reboot normally will prevent Malwarebytes from removing all the malware. When done, click the Logs tab and copy/paste the contents of the new report in your next reply.

Please download Kaspersky's TDSSKiller and save it to your Desktop. <-Important!!!
Be sure to print out and follow the instructions for performing a scan. Alternate instructions can be found here.

  • Extract (unzip) the file to your desktop and make sure TDSSKiller.exe (the contents of the zipped file) is on the Desktop itself, not within a folder on the Desktop.
  • Alternatively, you can download TDSSKiller.exe and use that instead.
  • Double-click on TDSSKiller.exe to run the tool for known TDSS variants.
    Vista/Windows 7 users right-click and select Run As Administrator.
  • When the program opens, click the Start Scan button.

    Posted Image
  • Do not use the computer during the scan
  • If the scan completes with nothing found, click Close to exit.
  • Any objects found, will show in the Scan results - Select action for found objects and offer three options.
  • If an infected file is detected, the default action will be Cure...do not change it.

    Posted Image
  • Click Continue > Reboot now to finish the cleaning process.<- Important!!

    Posted Image
  • If 'Suspicious' objects are detected, you will be given the option to Skip or Quarantine. Skip will be the default selection. Leave it as such for now.
  • A log file named TDSSKiller_version_date_time_log.txt will be created and saved to the root directory (usually Local Disk C:).
  • Copy and paste the contents of that file in your next reply.
-- If TDSSKiller does not run, try renaming it. To do this, right-click on TDSSKiller.exe, select Rename and give it a random name with the .com file extension (i.e. 123abc.com). If you do not see the file extension, please refer to these instructions. In some cases it may be necessary to redownload TDSSKiller and randomly rename it before downloading and saving to the computer or to perform the scan in "safe mode".

-- For any files detected as 'Suspicious' (except those identified as Forged to be cured after reboot) get a second opinion by submitting to Jotti's virusscan or VirusTotal. In the "File to upload & scan" box, browse to the location of the suspicious file and submit (upload) it for scanning/analysis.
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#3 otherdreams


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Posted 19 August 2011 - 08:09 AM

I don't know if its inappropriate to post a personal story here, but..

I had the same infected file continuously returning after reboot.

It was also being used by: c:\programdata\imm3232.exe

Malwarebytes would find and delete these files, but they were being regenerated from the registry upon restart.

But you can't find or delete those references from the registry with regedit, because they are hidden entries.
With RegScanner (http://www.nirsoft.net/utils/regscanner.html) it was easy to search for those two file names (with Windows 7 you'll have to "run as Administrator").
Each had about 3 matching keys in the registry. So I saved a backup of those keys and then deleted them.

Avira could then remove the infected & associated files, and (in at least this case) it seemed to be more thorough than Malwarebytes.

After a week of fighting, I'm finally rid of this Trojan.Tracur.Gen virus!

Edited by otherdreams, 19 August 2011 - 08:12 AM.

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