csrss.exe, backdoor.bot, conhost.exe

[rabidsheeep]

Solved:
Just in case somebody Googles this and needs help:

I backed up my files on a second hard drive and created a new user account with administrative privileges. Control panel > User Accounts > Create New Account I then logged out of my old account, logged into the new one, and deleted the old one.

Hey PCMech, it's been a while,

That is to say, I've managed to not break my computer for quite a long time, but my streak seems to be over.

Enter: csrss.exe

There are two copies of it running. The first is a system file, the second is in a temp folder, which is coming up red on Malwarebytes, HijackThis, Spybot, AVG, and Security Task Manager.

Running Malwarebytes gives me 3 infected issues:

Registry Values Infected: HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost (Backdoor.Bot) -> No action taken. Files Infected: C:\Users\Omar the yellow dart\AppData\Local\Temp\csrss.exe (Trojan.Agent) -> No action taken. C:\Users\Omar the yellow dart\AppData\Roaming\Microsoft\conhost.exe (Backdoor.Bot) -> No action taken.

I tried running Malwarebytes in safe mode twice, as well as HijackThis in safe mode, but it hasn't worked yet.

Here's the HijackThis Log:

Logfile of Trend Micro HijackThis v2.0.4 Scan saved at 10:42:38 AM, on 12/6/2010 Platform: Windows Vista SP2 (WinNT 6.00.1906) MSIE: Internet Explorer v7.00 (7.00.6002.18005) Boot mode: Normal Running processes: C:\Users\Omar the yellow dart\AppData\Roaming\dwm.exe C:\Program Files (x86)\AVG\AVG8\avgtray.exe C:\Users\Omar the yellow dart\AppData\Roaming\Microsoft\conhost.exe C:\Users\OMARTH~1\AppData\Local\Temp\csrss.exe C:\Users\Omar the yellow dart\Desktop\HijackThis.exe R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = Bing R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = MSN.com R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = MSN.com R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = Bing R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = Bing R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = MSN.com R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = http=127.0.0.1:52929 R0 - HKCU\Software\Microsoft\Internet Explorer\Toolbar,LinksFolderName = F3 - REG:win.ini: load=C:\Users\OMARTH~1\AppData\Local\Temp\csrss.exe O1 - Hosts: ::1 localhost O2 - BHO: AcroIEHelperStub - {18DF081C-E8AD-4283-A596-FA578C2EBDC3} - C:\Program Files (x86)\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelperShim.dll O2 - BHO: Java(tm) Plug-In SSV Helper - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files (x86)\Java\jre6\bin\ssv.dll O2 - BHO: Java(tm) Plug-In 2 SSV Helper - {DBC80044-A445-435b-BC74-9C25C1C588A9} - C:\Program Files (x86)\Java\jre6\bin\jp2ssv.dll O2 - BHO: HP Smart BHO Class - {FFFFFFFF-CF4E-4F2B-BDC2-0E72E116A856} - C:\Program Files (x86)\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll O4 - HKLM\..\Run: [AVG8_TRAY] C:\PROGRA~2\AVG\AVG8\avgtray.exe O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files (x86)\QuickTime\QTTask.exe" -atboottime O4 - HKLM\..\Run: [Adobe Reader Speed Launcher] "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Reader_sl.exe" O4 - HKLM\..\Run: [Adobe ARM] "C:\Program Files (x86)\Common Files\Adobe\ARM\1.0\AdobeARM.exe" O4 - HKLM\..\Run: [Malwarebytes Anti-Malware (reboot)] "C:\Program Files (x86)\Malwarebytes' Anti-Malware\mbam.exe" /runcleanupscript O4 - HKUS\S-1-5-19\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'LOCAL SERVICE') O4 - HKUS\S-1-5-19\..\Run: [WindowsWelcomeCenter] rundll32.exe oobefldr.dll,ShowWelcomeCenter (User 'LOCAL SERVICE') O4 - HKUS\S-1-5-20\..\Run: [Sidebar] %ProgramFiles%\Windows Sidebar\Sidebar.exe /detectMem (User 'NETWORK SERVICE') O9 - Extra button: HP Smart Select - {DDE87865-83C5-48c4-8357-2F5B1AA84522} - C:\Program Files (x86)\HP\Digital Imaging\Smart Web Printing\hpswp_BHO.dll O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} - http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab O22 - SharedTaskScheduler: Component Categories cache daemon - {8C7461EF-2B13-11d2-BE35-3078302C2030} - C:\Windows\system32\browseui.dll O23 - Service: Adobe Version Cue CS4 - Adobe Systems Incorporated - C:\Program Files (x86)\Common Files\Adobe\Adobe Version Cue CS4\Server\bin\VersionCueCS4.exe O23 - Service: @%SystemRoot%\system32\Alg.exe,-112 (ALG) - Unknown owner - C:\Windows\System32\alg.exe (file missing) O23 - Service: Ati External Event Utility - Unknown owner - C:\Windows\system32\Ati2evxx.exe (file missing) O23 - Service: AVG Free8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. - C:\PROGRA~2\AVG\AVG8\avgwdsvc.exe O23 - Service: @dfsrres.dll,-101 (DFSR) - Unknown owner - C:\Windows\system32\DFSR.exe (file missing) O23 - Service: @%systemroot%\system32\fxsresm.dll,-118 (Fax) - Unknown owner - C:\Windows\system32\fxssvc.exe (file missing) O23 - Service: FLEXnet Licensing Service - Acresso Software Inc. - C:\Program Files (x86)\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService.exe O23 - Service: FLEXnet Licensing Service 64 - Acresso Software Inc. - C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService64.exe O23 - Service: Google Update Service (gupdate) (gupdate) - Google Inc. - C:\Program Files (x86)\Google\Update\GoogleUpdate.exe O23 - Service: @keyiso.dll,-100 (KeyIso) - Unknown owner - C:\Windows\system32\lsass.exe (file missing) O23 - Service: @comres.dll,-2797 (MSDTC) - Unknown owner - C:\Windows\System32\msdtc.exe (file missing) O23 - Service: @%SystemRoot%\System32\netlogon.dll,-102 (Netlogon) - Unknown owner - C:\Windows\system32\lsass.exe (file missing) O23 - Service: PnkBstrA - Unknown owner - C:\Windows\system32\PnkBstrA.exe O23 - Service: @%systemroot%\system32\psbase.dll,-300 (ProtectedStorage) - Unknown owner - C:\Windows\system32\lsass.exe (file missing) O23 - Service: Cyberlink RichVideo Service(CRVS) (RichVideo) - Unknown owner - C:\Program Files (x86)\CyberLink\Shared Files\RichVideo.exe O23 - Service: @%systemroot%\system32\Locator.exe,-2 (RpcLocator) - Unknown owner - C:\Windows\system32\locator.exe (file missing) O23 - Service: @%SystemRoot%\system32\samsrv.dll,-1 (SamSs) - Unknown owner - C:\Windows\system32\lsass.exe (file missing) O23 - Service: @%SystemRoot%\system32\SLsvc.exe,-101 (slsvc) - Unknown owner - C:\Windows\system32\SLsvc.exe (file missing) O23 - Service: @%SystemRoot%\system32\snmptrap.exe,-3 (SNMPTRAP) - Unknown owner - C:\Windows\System32\snmptrap.exe (file missing) O23 - Service: @%systemroot%\system32\spoolsv.exe,-1 (Spooler) - Unknown owner - C:\Windows\System32\spoolsv.exe (file missing) O23 - Service: Steam Client Service - Valve Corporation - C:\Program Files (x86)\Common Files\Steam\SteamService.exe O23 - Service: @%SystemRoot%\system32\ui0detect.exe,-101 (UI0Detect) - Unknown owner - C:\Windows\system32\UI0Detect.exe (file missing) O23 - Service: @%SystemRoot%\system32\vds.exe,-100 (vds) - Unknown owner - C:\Windows\System32\vds.exe (file missing) O23 - Service: @%systemroot%\system32\vssvc.exe,-102 (VSS) - Unknown owner - C:\Windows\system32\vssvc.exe (file missing) O23 - Service: @%systemroot%\system32\wbengine.exe,-104 (wbengine) - Unknown owner - C:\Windows\system32\wbengine.exe (file missing) O23 - Service: @%Systemroot%\system32\wbem\wmiapsrv.exe,-110 (wmiApSrv) - Unknown owner - C:\Windows\system32\wbem\WmiApSrv.exe (file missing) O23 - Service: @%ProgramFiles%\Windows Media Player\wmpnetwk.exe,-101 (WMPNetworkSvc) - Unknown owner - C:\Program Files (x86)\Windows Media Player\wmpnetwk.exe (file missing) O23 - Service: Zune Wireless Configuration Service (ZuneWlanCfgSvc) - Unknown owner - C:\Windows\system32\ZuneWlanCfgSvc.exe (file missing) -- End of file - 7211 bytes

Does anyone have any other input or suggestions short of reformatting?

thanks a ton,

-Omar

[glc]

R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyServer = http=127.0.0.1:52929

Control panel, Internet options - connections, LAN settings. Uncheck all boxes.

F3 - REG:win.ini: load=C:\Users\OMARTH~1\AppData\Local\Temp\csrss.exe
O1 - Hosts: ::1 localhost

Use HJT to remove these.

[Nuclear Krusader]

And then clean out your Temp folder (C:\Users\OMARTH~1\AppData\Local\Temp\). You may have to enable viewing of hidden files and folders under Folder Options in the Control Panel to be able to do this.

Clean out also the contents of C:\Windows\Temp\.

[rabidsheeep]

I managed to find a solution, at least I think I did.

For the backdoor.bot, I ran a Trendmicro Housecall scan which removed that pretty easily.

Hijack this, as well as manually cleaning the temp folder wasn't removing csrss.exe. Just a reminder, the file was under my C:\USERS\ path, apparently there are other variations that hide in different spots.

I backed up my files on a second hard drive and created a new user account with administrative privileges.

Control panel > User Accounts > Create New Account

I then logged out of my old account, logged into the new one, and deleted the old one.

So far Malwarebytes, Housecall, and Hijack this all say that it's gone. Not to be paranoid, but am I at any risk that it's still hiding somewhere?

[Nuclear Krusader]

Malware loves to hide in System Restore so that it can reinstall itself. You can disable system restore, if you don't mind losing all your restore points.