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.

Photo

Malware has hidden itself using EFS?


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

#1 Mike Dolan

Mike Dolan

  • Members
  • 1 posts
  • OFFLINE
  •  
  • Local time:01:56 PM

Posted 08 March 2010 - 07:36 PM

Hi all,

I've dealt with a fair bit of malware over the years, but this one has left me feeling like an utter noob so I'm hoping the combined wisdom here can shed some light and get me going.

Background: It's not my machine so I don't know how it got infected, but here's the basic analysis.

Machine is running XPSP3 home. Logs in automatically to the standard teletubby background and then explorer doesn't start. Now for the fun! Normally I can deal with this, but the nasty little blighter has created itself under %ProgramFiles%\Common Files\System. Crucially it has set itself up using EFS. All the filenames (randomly generated) are in green and a quick properties shows that sure enough they are using the inbuilt Encrypting File System.

According to EfsDump, the creator account is a randomly named account. I have no idea what the password for the account is, and cannot remove the encryption flag. This means that I cannot even copy/delete the files so I have no idea what I'm actually dealing with :-(

I have NOT reset the password (as I understand this would destroy the chances of recovery). Booting to WinPE/BartPE/Ubuntu/PuppyLinux all have the same result - I still get access denied when trying to move/delete the files. I can't even copy them off for uploading to any virus scanner for proper analysis.

Nothing else on the machine appears to be encrypted - just the malware files. I would upload the full GMER scan, but GMER crashes (but before it crashes it also indicates there is rootkit activity).

I've done quite a bit of searching around but cannot find anything that particularly matches this pattern. I've no doubt someone will post a link that I've missed though!

Please note that there are signs of a Vundo.H infection as well but I've never seen this encryption with Vundo so I suspect I'm dealing with more than one malware infection.

Any help is appreciated. Thanks for taking the time to read this. It's gone midnight here, so I'll check in tomorrow morning if anyone has any thoughts.

Cheers,
Mike

Logs below:


DDS (Ver_09-12-01.01) - NTFSx86
Run by MS at 0:24:31.81 on 09/03/2010
Internet Explorer: 7.0.5730.11
Microsoft Windows XP Professional 5.1.2600.3.1252.44.1033.18.1279.733 [GMT 0:00]

AV: AVG Anti-Virus Free *On-access scanning enabled* (Updated) {17DDD097-36FF-435F-9E1B-52D74245D6BF}
AV: Webroot AntiVirus with AntiSpyware *On-access scanning disabled* (Updated) {77E10C7F-2CCA-4187-9394-BDBC267AD597}

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

C:\Program Files\Webroot\Spy Sweeper\WRConsumerService.exe
C:\WINDOWS\system32\svchost -k DcomLaunch
svchost.exe
C:\Program Files\Windows Defender\MsMpEng.exe
C:\WINDOWS\System32\svchost.exe -k netsvcs
C:\WINDOWS\system32\svchost.exe -k WudfServiceGroup
svchost.exe
svchost.exe
C:\WINDOWS\system32\spoolsv.exe
svchost.exe
C:\Program Files\RegCure\RegCure.exe
C:\Program Files\Common Files\Apple\Mobile Device Support\bin\AppleMobileDeviceService.exe
C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
C:\Program Files\Bonjour\mDNSResponder.exe
svchost.exe
C:\PROGRA~1\AVG\AVG8\avgrsx.exe
C:\Program Files\WIDCOMM\Bluetooth Software\bin\btwdins.exe
C:\PROGRA~1\AVG\AVG8\avgnsx.exe
C:\WINDOWS\System32\svchost.exe -k HTTPFilter
C:\Program Files\iolo\common\lib\ioloServiceManager.exe
C:\Program Files\Common Files\Microsoft Shared\VS7DEBUG\MDM.EXE
C:\WINDOWS\system32\slserv.exe
C:\WINDOWS\system32\svchost.exe -k imgsvc
C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
C:\PROGRA~1\AVG\AVG8\avgemc.exe
C:\Program Files\AVG\AVG8\avgcsrvx.exe
C:\WINDOWS\system32\taskmgr.exe
C:\WINDOWS\system32\ctfmon.exe
D:\Data\Tools\Spyware\dds.scr

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

uStart Page = hxxp://www.bbc.co.uk/
uSearch Bar = hxxp://www.google.com/ie
uSearchMigratedDefaultURL = hxxp://www.google.com/search?q={searchTerms}&sourceid=ie7&rls=com.microsoft:en-US&ie=utf8&oe=utf8
uInternet Settings,ProxyOverride = *.local
uSearchURL,(Default) = hxxp://www.google.com/keyword/%s
mURLSearchHooks: Class: {0f1230dc-b8c9-65ce-654e-e86e4fce2512} -
BHO: Adobe PDF Reader Link Helper: {06849e9f-c8d7-4d59-b87d-784b7d6be0b3} - c:\program files\common files\adobe\acrobat\activex\AcroIEHelper.dll
BHO: {0f1230dc-b8c9-65ce-654e-e86e4fce2512} - Class
BHO: {AA58ED58-01DD-4d91-8333-CF10577473F7} - No File
TB: Yahoo! Toolbar: {ef99bd32-c1fb-11d2-892f-0090271d4f88} - c:\program files\yahoo!\companion\installs\cpn\yt.dll
EB: {32683183-48a0-441b-a342-7c2a440a9478} - No File
EB: {39546ca7-604e-99b6-5ce8-136d88a85289} - JavaScript console
uRun: [ctfmon.exe] c:\windows\system32\ctfmon.exe
uRun: [ISUSPM] "c:\program files\common files\installshield\updateservice\ISUSPM.exe" -scheduler
uRun: [WMPNSCFG] "c:\program files\windows media player\WMPNSCFG.exe"
mRun: [<NO NAME>]
mRun: [ezShieldProtector for Px] c:\windows\system32\ezSP_Px.exe
mRun: [AppleSyncNotifier] "c:\program files\common files\apple\mobile device support\bin\AppleSyncNotifier.exe"
mRun: [SMSystemAnalyzer] "c:\program files\iolo\system mechanic 7\SMSystemAnalyzer.exe"
mRun: [TkBellExe] "c:\program files\common files\real\update_ob\realsched.exe" -osboot
mRun: [iTunesHelper] "c:\program files\itunes\iTunesHelper.exe"
mRun: [SpySweeper] "c:\program files\webroot\spy sweeper\SpySweeperUI.exe" /startintray
mRun: [DWQueuedReporting] "c:\progra~1\common~1\micros~1\dw\dwtrig20.exe" -t
mRunOnce: [*Restore] c:\windows\system32\restore\rstrui.exe -i
mRunOnce: [Malwarebytes' Anti-Malware] c:\program files\malwarebytes' anti-malware\mbamgui.exe /install /silent
dRun: [CTFMON.EXE] c:\windows\system32\CTFMON.EXE
dRun: [DWQueuedReporting] "c:\progra~1\common~1\micros~1\dw\dwtrig20.exe" -t
uPolicies-explorer: ForceActiveDesktopOn = 1 (0x1)
IE: &Google Search
IE: &Translate English Word
IE: Backward Links
IE: Cached Snapshot of Page
IE: E&xport to Microsoft Excel - c:\progra~1\micros~2\office11\EXCEL.EXE/3000
IE: Send To &Bluetooth - c:\program files\widcomm\bluetooth software\btsendto_ie_ctx.htm
IE: Similar Pages
IE: Translate Page into English
IE: {CCA281CA-C863-46ef-9331-5C8D4460577F} - c:\program files\widcomm\bluetooth software\btsendto_ie.htm
IE: {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe
IE: {FB5F1910-F110-11d2-BB9E-00C04F795683} - c:\program files\messenger\msmsgs.exe
IE: {92780B25-18CC-41C8-B9BE-3C9C571A8263} - {FF059E31-CC5A-4E2E-BF3B-96E929D65503} - c:\progra~1\micros~2\office11\REFIEBAR.DLL
DPF: {00B71CFB-6864-4346-A978-C0A14556272C} - hxxp://messenger.zone.msn.com/binary/msgrchkr.cab31267.cab
DPF: {0CCA191D-13A6-4E29-B746-314DEE697D83} - hxxp://upload.facebook.com/controls/2008.10.10_v5.5.8/FacebookPhotoUploader5.cab
DPF: {1239CC52-59EF-4DFA-8C61-90FFA846DF7E} - hxxp://www.musicnotes.com/download/mnviewer.cab
DPF: {166B1BCA-3F9C-11CF-8075-444553540000} - hxxp://download.macromedia.com/pub/shockwave/cabs/director/sw.cab
DPF: {17492023-C23A-453E-A040-C7C580BBF700} - hxxp://go.microsoft.com/fwlink/?linkid=39204
DPF: {233C1507-6A77-46A4-9443-F871F945D258} - hxxp://download.macromedia.com/pub/shockwave/cabs/director/sw.cab
DPF: {2917297F-F02B-4B9D-81DF-494B6333150B} - hxxp://messenger.zone.msn.com/binary/MineSweeper.cab31267.cab
DPF: {3E68E405-C6DE-49FF-83AE-41EE9F4C36CE} - hxxp://office.microsoft.com/officeupdate/content/opuc3.cab
DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} - hxxp://gfx1.mail.live.com/mail/w1/resources/MSNPUpld.cab
DPF: {5ED80217-570B-4DA9-BF44-BE107C0EC166} - hxxps://scan.safety.live.com/resource/download/scanner/en-us/wlscbase7617.cab
DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} - hxxp://update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1123121351234
DPF: {67DABFBF-D0AB-41FA-9C46-CC0F21721616} - hxxp://download.divx.com/player/DivXBrowserPlugin.cab
DPF: {8E0D4DE5-3180-4024-A327-4DFAD1796A8D} - hxxp://messenger.zone.msn.com/binary/MessengerStatsClient.cab31267.cab
DPF: {8FFBE65D-2C9C-4669-84BD-5829DC0B603C} - hxxp://fpdownload.macromedia.com/get/flashplayer/current/polarbear/ultrashim.cab
DPF: {A8F2B9BD-A6A0-486A-9744-18920D898429} - hxxp://www.sibelius.com/download/software/win/ActiveXPlugin.cab
DPF: {AF2E62B6-F9E1-4D4F-A10A-9DC8E6DCBCC0} - hxxp://update.videoegg.com/Install/Windows/Initial/VideoEggPublisher.exe
DPF: {B1062195-6877-4AE4-BE0B-1FC0E51048C1} - hxxp://gromozon.com/4d25a403/10002/1/xp/FreeAccess.ocx
DPF: {B49C4597-8721-4789-9250-315DFBD9F525} - hxxp://cdn.digitalcity.com/radio/ampx/ampx2.6.1.11_en_dl.cab
DPF: {C3F79A2B-B9B4-4A66-B012-3EE46475B072} - hxxp://messenger.zone.msn.com/binary/MessengerStatsPAClient.cab56907.cab
DPF: {C606BA60-AB76-48B6-96A7-2C4D5C386F70} - hxxp://www.telewest.co.uk/motive/files/MotivePreQual.cab
DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} - hxxp://fpdownload.macromedia.com/get/flashplayer/current/swflash.cab
DPF: {F5A7706B-B9C0-4C89-A715-7A0C6B05DD48} - hxxp://messenger.zone.msn.com/binary/MineSweeper.cab56986.cab
DPF: {FFD85DC8-5261-4D11-B728-F7C59D911691} - hxxp://www.iolo.com/app/ocx/UpgradeVerify.cab
TCP: {6C7D5C6B-92A5-4D92-A50C-BFE17FC19318} = 158.43.240.3,158.43.240.4
Handler: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - c:\program files\avg\avg8\avgpp.dll
Handler: widimg - {EE7C2AFF-5742-44FF-BD0E-E521B0D3C3BA} - c:\windows\system32\BTXPPanel.dll
Notify: avgrsstarter - avgrsstx.dll
AppInit_DLLs: \\?\c:\windows\system32\com8.frt
SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - c:\windows\system32\WPDShServiceObj.dll
SEH: Microsoft AntiMalware ShellExecuteHook: {091eb208-39dd-417d-a5dd-7e2c2d8fb9cb} - c:\progra~1\wifd1f~1\MpShHook.dll
IFEO: explorer.exe - "c:\windows\system32\imjaltwe.ver"

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

R0 ssfs0bbc;ssfs0bbc;c:\windows\system32\drivers\ssfs0bbc.sys [2009-4-21 29808]
R0 VOBID;VOBID;c:\windows\system32\drivers\vobid.sys [2003-8-1 29239]
R1 AvgLdx86;AVG Free AVI Loader Driver x86;c:\windows\system32\drivers\avgldx86.sys [2009-1-4 335240]
R1 AvgMfx86;AVG Free On-access Scanner Minifilter Driver x86;c:\windows\system32\drivers\avgmfx86.sys [2009-1-4 27784]
R1 AvgTdiX;AVG Free8 Network Redirector;c:\windows\system32\drivers\avgtdix.sys [2009-1-4 108552]
R1 oreans32;oreans32;c:\windows\system32\drivers\oreans32.sys [2009-11-6 33824]
R1 vobcom;vobcom;c:\windows\system32\drivers\vobcom.sys [2001-10-4 9728]
R1 vobiw;vobiw;c:\windows\system32\drivers\vobIW.sys [2004-7-6 188416]
R2 avg8emc;AVG Free8 E-mail Scanner;c:\progra~1\avg\avg8\avgemc.exe [2009-1-4 908056]
R2 avg8wd;AVG Free8 WatchDog;c:\progra~1\avg\avg8\avgwdsvc.exe [2009-1-4 297752]
R2 ioloFileInfoList;iolo FileInfoList Service;c:\program files\iolo\common\lib\ioloServiceManager.exe [2009-1-8 596336]
R2 ioloSystemService;iolo System Service;c:\program files\iolo\common\lib\ioloServiceManager.exe [2009-1-8 596336]
R2 WebrootSpySweeperService;Webroot Spy Sweeper Engine;c:\program files\webroot\spy sweeper\SpySweeper.exe [2009-4-21 4048240]
R2 WinDefend;Windows Defender;c:\program files\windows defender\MsMpEng.exe [2006-11-3 13592]
R2 WRConsumerService;Webroot Client Service;c:\program files\webroot\spy sweeper\WRConsumerService.exe [2009-9-7 1205760]
R3 cdrdrv;Cdrdrv;c:\windows\system32\drivers\Cdrdrv.sys [2004-8-3 62976]
S2 WebTzd;WebTzd;"c:\program files\common files\system\ubsdgv.exe" --> c:\program files\common files\system\UbSdGv.exe [?]
S3 ess;ESS Audio Driver (WDM);c:\windows\system32\drivers\ess.sys [2005-1-29 63360]
S3 G200;G200;c:\windows\system32\drivers\G200m.sys [2005-1-30 320384]
S3 ggflt;SEMC USB Flash Driver Filter;c:\windows\system32\drivers\ggflt.sys [2009-11-5 13224]
S3 MadgeTRN;Madge Token-Ring Adapter NDIS5 Driver;c:\windows\system32\drivers\mdgndis5.sys [2005-5-29 178370]
S3 mgau;mgau;c:\windows\system32\drivers\mgaum.sys [2005-1-29 320384]
S3 N100;Compaq Ethernet or Fast Ethernet NIC Driver;c:\windows\system32\drivers\n100325.sys [2005-1-29 128000]
S3 NPF;NetGroup Packet Filter Driver;c:\windows\system32\drivers\npf.sys [2005-8-2 32512]

============== File Associations ===============

JSEFile=NOTEPAD.EXE %1
regfile=NOTEPAD.EXE %1
scrfile=NOTEPAD.EXE %1
VBEFile=NOTEPAD.EXE %1
VBSFile=NOTEPAD.EXE %1

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

2010-03-08 22:54:08 0 d-----w- c:\docume~1\ms\applic~1\Malwarebytes
2010-03-08 22:54:01 38224 ----a-w- c:\windows\system32\drivers\mbamswissarmy.sys
2010-03-08 22:53:58 19160 ----a-w- c:\windows\system32\drivers\mbam.sys
2010-03-08 22:53:58 0 d-----w- c:\program files\Malwarebytes' Anti-Malware
2010-03-08 22:53:58 0 d-----w- c:\docume~1\alluse~1.win\applic~1\Malwarebytes
2010-03-08 22:43:42 1033728 ----a-w- c:\windows\testmike.exe
2010-03-08 22:40:43 0 d-----w- c:\program files\common files\system.old2
2010-03-07 13:26:55 0 d-----w- c:\docume~1\alluse~1.win\applic~1\RegCure
2010-03-06 22:42:46 0 d-----w- c:\windows\system32\wbem\Repository
2010-02-15 22:06:55 0 d-----w- c:\program files\iPod
2010-02-15 22:06:37 0 d-----w- c:\program files\iTunes

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

2010-02-24 09:16:06 181632 ------w- c:\windows\system32\MpSigStub.exe
2009-12-31 16:50:03 353792 ------w- c:\windows\system32\dllcache\srv.sys
2009-12-31 15:33:06 70656 ------w- c:\windows\system32\dllcache\ie4uinit.exe
2009-12-31 15:33:06 13824 ------w- c:\windows\system32\dllcache\ieudinit.exe
2009-12-18 13:05:43 634648 ------w- c:\windows\system32\dllcache\iexplore.exe
2009-12-18 13:04:09 161792 ----a-w- c:\windows\system32\dllcache\ieakui.dll
2009-12-16 18:43:27 343040 ----a-w- c:\windows\system32\mspaint.exe
2009-12-16 18:43:27 343040 ------w- c:\windows\system32\dllcache\mspaint.exe
2009-12-14 07:08:23 33280 ----a-w- c:\windows\system32\csrsrv.dll
2009-12-14 07:08:23 33280 ------w- c:\windows\system32\dllcache\csrsrv.dll
2005-07-14 19:31:20 27648 --sha-w- c:\windows\system32\AVSredirect.dll
2008-09-23 11:44:09 32768 --sha-w- c:\windows\system32\config\systemprofile\local settings\history\history.ie5\mshist012008092320080924\index.dat

============= FINISH: 0:25:37.07 ===============

Attached Files



BC AdBot (Login to Remove)

 


#2 Blind Faith

Blind Faith

  • Malware Response Team
  • 4,101 posts
  • OFFLINE
  •  
  • Gender:Female
  • Local time:03:56 PM

Posted 12 March 2010 - 11:41 AM

Hello and welcome to Bleeping Computer! welcome.gif

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

We also need a new log from the GMER anti-rootkit scanner. Please first disable any CD emulation programs using the steps found in this topic:

Why we request you disable CD Emulation when receiving Malware Removal Advice

Then create another GMER log and post it as an attachment to the reply where you post your new DDS log. Instructions on how to properly create a GMER log can be found here:

How to create a GMER log





Elle
Can you hear it?It's all around!

Tomar ki manè acchè?
Yadi thakè, tahalè
Ki kshama kartè paro
?



If I haven't replied in 48 hours, please feel free to send me a PM.



Posted Image

#3 thcbytes

thcbytes

  • Malware Response Team
  • 14,790 posts
  • OFFLINE
  •  
  • Gender:Male
  • Local time:07:56 AM

Posted 17 March 2010 - 10:30 AM

Due to the lack of feedback this Topic is closed.

If you need this topic reopened, please request this by sending the moderating team a PM with the address of the thread. This applies only to the original topic starter.

Everyone else please begin a New Topic
Proud member - Unified Network of Instructors and Trained Eliminators
Posted Image

I do not accept personal donations for assistance provided. I would ask that you instead consider donating the greatest gift - Organ Donation. Your organs are of no use to you when your gone. You will save a life that would otherwise be lost!

http://donatelife.net/register-now/




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users