Jump to content


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.

Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.


Downloaded a keylogger, disappeared after computer crash

  • This topic is locked This topic is locked
2 replies to this topic

#1 Endgamelikespie


  • Members
  • 2 posts
  • Local time:07:56 AM

Posted 21 July 2009 - 04:33 PM

Pasting in complete information from another post. ~ OB

I have an odd situation on my hands. Basically, out of idiocy, I downloaded a keylogger disguised as a "Windows Media plugin" file. Running the file did nothing at first glance, but shortly after I had learned that I have fell victim to a common World of Warcraft account theft scheme. I quickly ran Hijackthis and got the log analyzed at hijackthis.de. It detected that csrss.exe was running outside of C:\Windows\System32. Instead, it was running out of a Temp folder. (Forgot the exact address.) I quickly reacted by opening up Task Manager, clicking on one of the csrss.exe, and clicking End Process.

.....It turned out to be the legitimate one. I had crashed the computer.

Now here's where it gets odd. After rebooting the computer, the fake csrss.exe was gone. No traces of it whatsoever. A search found a prefetch file for it, but it's gone. I have ran Spybot, Malware Bytes, Avira Antivirus, a-Squared, and AdAware, but they pick up nothing. Not even when ran in Safe Mode. TrendMicro and Pandascan online scans have picked up nothing as well. Not even Hijackthis is picking it up anymore. I have constantly checked Task Manager, but I have yet to see the second csrss.exe. And seeing how my WoW account is still safe. It has been long enough for someone to log on and swipe my gold by now, although I haven't entered any personal information before I crashed the computer, I have since then logged on after it apparently disappeared.

I even attempted an experiment on another computer with Windows XP 32-bit. (This one has Vista 32-bit.) I updated all anti-virus/spyware programs, downloaded the "Windows Media plugin", and then turned off the modem. Sure enough, there was a fake csrss.exe, this time located in C:\Documents and Settings\(username\Temp.

a-Squared, Spybot, and Avast failed to detect it, Hijackthis detected it but I didn't use HJT to remove it yet. Malware Bytes DID detect it, deleted it, and prompted me to restart the computer. But after restarting, there was not one, but TWO fake csrss.exes! And this time it got a bit more clever, it was now found in C:\Documents and Settings\(username)\My Documents\System.

This time, I used Hijackthis, removed two keys related to it, linking to that directory, and it shut them down. I reran Malware Bytes and it didn't detect it this time, even though the .exe file was still there, I just deleted it the old fashioned way at that point. Apparently that took care of it.

Here's what I learned:
-Malware Bytes detected it when it was active.
-Under properties, it lists itself as a "Windows Help File" as opposed to the real csrss.exe's "Client Server Runtime Process".
-It managed to replicate its self when Malware Bytes tried to delete it, but when I deleted it manually, it appears to be gone.

Perhaps it wasn't the most sophisticated keylogger. However, it didn't exactly tell me whether my main computer is safe or not.

So basically, I'm really confused here. Could a keylogger REALLY have just been deleted by crashing the computer while everything else is apparently in tact? Am I safe? Anything else I should try to do?

End of pasted in information. ~ OB

I suppose I won't bore you with all the details, but I downloaded a keylogger, caught on to the fact (before entering any personal information), found two instances of csrss.exe in Task Manager, shut down the legitimate one, crashing the computer, and now there's no traces of the keylogger anywhere.

Basically, I want to know if I'm safe or not. I don't see any sign of it in these logs, but, well, I'm no expert.

DDS log:

DDS (Ver_09-06-26.01) - NTFSx86
Run by Endgame at 11:20:34.73 on Tue 07/21/2009
Internet Explorer: 8.0.6001.18702 BrowserJavaVersion: 1.6.0_14
Microsoft® Windows Vistaāā€˛¢ Home Basic 6.0.6001.1.1252.1.1033.18.3326.2722 [GMT -4:00]

SP: Windows Defender *enabled* (Updated) {D68DDC3A-831F-4FAE-9E44-DA132C1ACF46}

============== Running Processes ===============

C:\Windows\system32\svchost.exe -k DcomLaunch
C:\Windows\system32\svchost.exe -k rpcss
C:\Windows\System32\svchost.exe -k LocalServiceNetworkRestricted
C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted
C:\Windows\system32\svchost.exe -k netsvcs
C:\Windows\system32\svchost.exe -k GPSvcGroup
C:\Windows\system32\svchost.exe -k LocalService
C:\Windows\system32\svchost.exe -k NetworkService
C:\Windows\system32\svchost.exe -k LocalServiceNoNetwork

============== Pseudo HJT Report ===============

uStart Page = about:blank
BHO: Adobe PDF Link Helper: {18df081c-e8ad-4283-a596-fa578c2ebdc3} - c:\program files\common files\adobe\acrobat\activex\AcroIEHelperShim.dll
BHO: Java™ Plug-In 2 SSV Helper: {dbc80044-a445-435b-bc74-9c25c1c588a9} - c:\program files\java\jre6\bin\jp2ssv.dll
mPolicies-system: EnableLUA = 0 (0x0)
mPolicies-system: EnableUIADesktopToggle = 0 (0x0)
DPF: {8AD9C840-044E-11D1-B3E9-00805F499D93} - hxxp://java.sun.com/update/1.6.0/jinstall-1_6_0_14-windows-i586.cab
DPF: {CAFEEFAC-0016-0000-0014-ABCDEFFEDCBA} - hxxp://java.sun.com/update/1.6.0/jinstall-1_6_0_14-windows-i586.cab
DPF: {CAFEEFAC-FFFF-FFFF-FFFF-ABCDEFFEDCBA} - hxxp://java.sun.com/update/1.6.0/jinstall-1_6_0_14-windows-i586.cab
DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} - hxxps://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab

================= FIREFOX ===================

FF - ProfilePath - c:\users\endgame\appdata\roaming\mozilla\firefox\profiles\ok1mhzd7.default\
FF - prefs.js: browser.startup.homepage - about:blank
FF - prefs.js: keyword.enabled - false
FF - HiddenExtension: Java Console: No Registry Reference - c:\program files\mozilla firefox\extensions\{CAFEEFAC-0016-0000-0012-ABCDEFFEDCBA}
FF - HiddenExtension: Java Console: No Registry Reference - c:\program files\mozilla firefox\extensions\{CAFEEFAC-0016-0000-0014-ABCDEFFEDCBA}

============= SERVICES / DRIVERS ===============

R1 BIOS;BIOS;c:\windows\system32\drivers\BIOS.sys [2005-3-16 13696]
R1 BS_I2cIo;BS_I2cIo;c:\windows\system32\drivers\BS_I2cIo.sys [2009-2-2 17024]

=============== Created Last 30 ================

2009-07-20 02:01 <DIR> --d----- c:\windows\pss
2009-07-19 21:58 102,664 a------- c:\windows\system32\drivers\tmcomm.sys
2009-07-19 21:28 <DIR> --d----- c:\program files\Panda Security
2009-07-19 21:21 <DIR> --d----- c:\users\endgame\.housecall6.6
2009-07-19 19:59 <DIR> --d----- c:\programdata\Lavasoft

==================== Find3M ====================

2009-07-19 14:17 73,048 a------- c:\windows\system32\drivers\avgntflt.sys
2009-05-24 00:54 882,144 a------- c:\windows\system32\drivers\tcpip.sys
2009-05-21 11:33 410,984 a------- c:\windows\system32\deploytk.dll
2009-02-02 22:24 665,600 a------- c:\windows\inf\drvindex.dat
2009-02-02 22:24 86,016 a------- c:\windows\inf\infstor.dat
2009-02-02 22:24 51,200 a------- c:\windows\inf\infpub.dat
2009-02-02 22:24 86,016 a------- c:\windows\inf\infstrng.dat
2008-04-30 22:28 1,654,869 a------- c:\programdata\DynuEncrypt.dll
2008-04-30 22:28 1,654,869 a------- c:\progra~2\DynuEncrypt.dll
2008-01-20 22:57 174 a--sh--- c:\program files\desktop.ini
2006-11-02 08:39 287,440 a------- c:\windows\inf\perflib\0409\perfi.dat
2006-11-02 08:39 287,440 a------- c:\windows\inf\perflib\0409\perfh.dat
2006-11-02 08:39 30,674 a------- c:\windows\inf\perflib\0409\perfd.dat
2006-11-02 08:39 30,674 a------- c:\windows\inf\perflib\0409\perfc.dat
2006-11-02 05:20 287,440 a------- c:\windows\inf\perflib\0000\perfi.dat
2006-11-02 05:20 287,440 a------- c:\windows\inf\perflib\0000\perfh.dat
2006-11-02 05:20 30,674 a------- c:\windows\inf\perflib\0000\perfd.dat
2006-11-02 05:20 30,674 a------- c:\windows\inf\perflib\0000\perfc.dat
2009-03-23 19:12 32,768 a--sh--- c:\windows\system32\config\systemprofile\appdata\local\microsoft\windows\history\history.ie5\mshist012009032320090324\index.dat

============= FINISH: 11:20:52.04 ===============

Attached Files

Edited by Orange Blossom, 21 July 2009 - 09:25 PM.

BC AdBot (Login to Remove)


#2 etavares


    Bleepin' Remover

  • Malware Response Team
  • 15,514 posts
  • Gender:Male
  • Local time:07:56 AM

Posted 01 August 2009 - 07:32 AM

Hello and welcome to Bleeping Computer

We apologize for the delay in responding to your request for help. Here at Bleeping Computer we get overwhelmed at times, and we are trying our best to keep up. Please note that your topic was not intentionally overlooked. Our mission is to help everyone in need, but sometimes it takes just a little longer to get to every request for help. No one is ignored here.

If you have since resolved the original problem you were having, we would appreciate you letting us know. If not please perform the following steps below so we can have a look at the current condition of your machine.

If you have not done so, include a clear description of the problems you're having, along with any steps you may have performed so far.

Upon completing the steps below another staff member will review and take the steps necessary with you to get your machine back in working order clean and free of malware.

If you have already posted a DDS log, please do so again, as your situation may have changed.
Use the 'Add Reply' and add the new log to this thread.

Thanks and again sorry for the delay.

We need to see some information about what is happening in your machine. Please perform the following scan:
  • Download DDS by sUBs from one of the following links. Save it to your desktop.
  • Double click on the DDS icon, allow it to run.
  • A small box will open, with an explaination about the tool. No input is needed, the scan is running.
  • Notepad will open with the results.
  • Follow the instructions that pop up for posting the results.
  • Close the program window, and delete the program from your desktop.
Please note: You may have to disable any script protection running if the scan fails to run. After downloading the tool, disconnect from the internet and disable all antivirus protection. Run the scan, enable your A/V and reconnect to the internet.

Information on A/V control HERE

If I don't respond within 2 days, please feel free to PM me.
Please don't ask for help via PM. The forums are there for a reason. Please post in the forums so others may benefit as well.

Posted Image
Unified Network of Instructors and Trusted Eliminators

#3 Billy O'Neal

Billy O'Neal

    Visual C++ STL Maintainer

  • Malware Response Team
  • 12,304 posts
  • Gender:Male
  • Location:Redmond, Washington
  • Local time:04:56 AM

Posted 06 August 2009 - 09:28 PM

Due to lack of feedback, this topic has been closed. Everyone else, please begin a new topic.

Twitter - My statements do not establish the official position of Microsoft Corporation, and are my own personal opinion. (But you already knew that, right?)
Posted Image

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users