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Rootkit Detected


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#1 erikjlee

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Posted 11 December 2011 - 04:56 PM

Hi!

So about a month ago, the sound from my computer went out. The speakers still worked, and so does my G35 headset.

A few days later I put my headset on and heard what sounded like an infomercial. No applications were running, so I immediately suspected something. I looked at my task manager and killed a process I did not recognize, and the sound went away. I ran Maleware Bytes scan and it found and deleted a trojan. I thought i was good to go.

A day later I checked the task manager and noticed another odd process using about 8k of memory. (cksd.exe) I stopped it, searched for and found it in C:\My Documents\Application Data\cksd.exe. I deleted it.

The next several days I found similar *.exe's running in that folder at around 8k memory usage. Malware Bytes did not detect anything in a full scan, so I downloaded and ran Microsoft Security Essentials, and it found nothing.

The next day, Microsoft Security Essentials popped a warning saying it found another infection; I allowed it to delete it. I then checked the task manager and noticed 'PING.EXE' consuming a large (~500k) chunk of memory.

At this point I figured I had something the scanners couldn't detect, so I began searching and found ComboFix referenced in a forum where someone had mentioned the "ghost" infomercial I previously mentioned. I disabled MSE and ran ComboFix; it said it detected ZeroAccess rootkit and removed it.

After some more research, it seems I was too quick in using it, and that I should have had someone walk me through what to do. I would like some help making sure my computer is clean.

I am running WinXP Pro SP3, Maleware Bytes (free version) and now Microsoft Security essentials.

Thanks!

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#2 TheShooter93

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Posted 11 December 2011 - 07:47 PM

Hi erikjlee, :busy:

I know it looks like a lot, but it's really just a lot of text asking for only 3 scans.

Once you've done these and posted the results in your next post, let me know how the computer is running.

You're right in saying that you should never run Combofix without being told to do so by a Malware Removal Expert.

If after these "general" scans, I find evidence of the ZeroAccess infection (or can't clear up any other infections), I'll direct you to the Malware Removal Team.

Note: You may have to perform some or all of the following in Safe Mode With Networking, depending on if you have internet access while in the normal Windows environment.

============================================================================

============================================================================

Download Security Check by screen317 from here or here.
  • Save it to your Desktop.
  • Double click SecurityCheck.exe and follow the onscreen instructions inside of the black box.
  • A Notepad document should open automatically called checkup.txt; please post the contents of that document.

============================================================================

============================================================================

Please download and scan with SUPERAntiSpyware Free
  • Double-click SUPERAntiSypware.exe and use the default settings for installation.
  • An icon will be created on your desktop. Double-click that icon to launch the program.
  • If it will not start, go to Start > All Prgrams > SUPERAntiSpyware and click on Alternate Start.
  • If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here. Double-click on the hyperlink for Download Installer and save SASDEFINITIONS.EXE to your desktop. Then double-click on SASDEFINITIONS.EXE to install the definitions.)
  • In the Main Menu, click the Preferences... button.
  • Click the "General and Startup" tab, and under Start-up Options, make sure "Start SUPERAntiSpyware when Windows starts" box is unchecked.
  • Click the "Scanning Control" tab, and under Scanner Options, make sure the following are checked (leave all others unchecked):
    • Close browsers before scanning.
    • Scan for tracking cookies.
    • Terminate memory threats before quarantining.
  • Click the "Close" button to leave the control center screen and exit the program.
  • Do not run a scan just yet.
Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Scan with SUPERAntiSpyware as follows:
  • Launch the program and back on the main screen, under "Scan for Harmful Software" click Scan your computer.
  • On the left, make sure you check C:\Fixed Drive.
  • On the right, under "Complete Scan", choose Perform Complete Scan and click "Next".
  • After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  • Make sure everything has a checkmark next to it and click "Next".
  • A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  • If asked if you want to reboot, click "Yes" and reboot normally.
  • To retrieve the removal information after reboot, launch SUPERAntispyware again.
    • Click Preferences, then click the Statistics/Logs tab.
    • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
    • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
    • Please copy and paste the Scan Log results in your next reply.
  • Click Close to exit the program.
If you have a problem downloading, installing or getting SAS to run, try downloading and using the SUPERAntiSpyware Portable Scanner instead. Save the randomly named file (i.e. SAS_1710895.COM) to a usb drive or CD and transfer to the infected computer. Then double-click on it to launch and scan. The file is randomly named to help keep malware from blocking the scanner.

============================================================================

============================================================================

Please download GMER from one of the following locations and save it to your desktop:
  • Main Mirror
    This version will download a randomly named file (Recommended)
  • Zipped Mirror
    This version will download a zip file you will need to extract first. If you use this mirror, please extract the zip file to your desktop.
  • Disconnect from the Internet and close all running programs.
  • Temporarily disable any real-time active protection so your security programs will not conflict with gmer's driver.
  • Double-click on the randomly named GMER file (i.e. n7gmo46c.exe) and allow the gmer.sys driver to load if asked.
  • Note: If you downloaded the zipped version, extract the file to its own folder such as C:\gmer and then double-click on gmer.exe.

    Posted Image
  • GMER will open to the Rootkit/Malware tab and perform an automatic quick scan when first run. (do not use the computer while the scan is in progress)
  • If you receive a WARNING!!! about rootkit activity and are asked to fully scan your system...click NO.
  • Now click the Scan button. If you see a rootkit warning window, click OK.
  • When the scan is finished, click the Save... button to save the scan results to your Desktop. Save the file as gmer.log.
  • Click the Copy button and paste the results into your next reply.
  • Exit GMER and be sure to re-enable your anti-virus, Firewall and any other security programs you had disabled.
-- If you encounter any problems, try running GMER in safe mode.
-- If GMER crashes or keeps resulting in a BSODs, uncheck Devices on the right side before scanning
.

============================================================================

============================================================================

Remember, after posting the results of these scans, let me know how the computer is running.

CCNA R&SCCNA Security | Network+  |  B.S. - Information Technology | Cyber Security Engineer

If I am helping you and have not replied within 48 hours, please send me a private message.

 

 


#3 erikjlee

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Posted 12 December 2011 - 09:20 PM

SecurityCheck.exe results:

Results of screen317's Security Check version 0.99.28
Windows XP Service Pack 3 x86
Internet Explorer 6 Out of date!
``````````````````````````````
Antivirus/Firewall Check:

Windows Firewall Disabled!
Microsoft Security Essentials
Antivirus up to date!
```````````````````````````````
Anti-malware/Other Utilities Check:

Malwarebytes' Anti-Malware
Java™ 6 Update 26
Java™ 6 Update 22
Java™ 7
Java™ SE Development Kit 7
Adobe Flash Player 11.1.102.55
Adobe Reader 9 Adobe Reader out of date!
Mozilla Firefox (8.0.)
Mozilla Thunderbird (3.0.1) Thunderbird out of Date!
````````````````````````````````
Process Check:
objlist.exe by Laurent

Windows Defender MSMpEng.exe
Microsoft Security Essentials msseces.exe
Microsoft Security Client Antimalware MsMpEng.exe
``````````End of Log````````````

#4 erikjlee

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Posted 13 December 2011 - 12:17 AM

F8 (nor any other F key) would give me the boot menu. It always booted regularly, so I used msconfig to boot in diagnostic startup and ran SuperAntiSpyware. Here is the log:

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 12/12/2011 at 09:00 PM

Application Version : 5.0.1136

Core Rules Database Version : 8043
Trace Rules Database Version: 5855

Scan type : Quick Scan
Total Scan Time : 00:02:34

Operating System Information
Windows XP Professional 32-bit, Service Pack 3 (Build 5.01.2600)
Administrator

Memory items scanned : 214
Memory threats detected : 0
Registry items scanned : 29967
Registry threats detected : 0
File items scanned : 7266
File threats detected : 60

Adware.Tracking Cookie
C:\Documents and Settings\Administrator\Cookies\CA5HT7IY.txt [ /atdmt.com ]
C:\Documents and Settings\Administrator\Cookies\CAXS509N.txt [ /apmebf.com ]
C:\Documents and Settings\Administrator\Cookies\CAGGEN08.txt [ /media6degrees.com ]
C:\Documents and Settings\Administrator\Cookies\CA84JSFC.txt [ /adtech.de ]
C:\Documents and Settings\Administrator\Cookies\CA5193AQ.txt [ /adserver.adtechus.com ]
C:\Documents and Settings\Administrator\Cookies\CA8PGJKT.txt [ /network.realmedia.com ]
C:\Documents and Settings\Administrator\Cookies\CASPAZ0L.txt [ /ru4.com ]
C:\Documents and Settings\Administrator\Cookies\CA8TIFS9.txt [ /adbrite.com ]
C:\Documents and Settings\Administrator\Cookies\CAUXZLYV.txt [ /specificclick.net ]
C:\Documents and Settings\Administrator\Cookies\CAI1M96N.txt [ /revsci.net ]
C:\Documents and Settings\Administrator\Cookies\CA06BLT8.txt [ /tribalfusion.com ]
C:\Documents and Settings\Administrator\Cookies\CA81AJ0J.txt [ /ad.wsod.com ]
C:\Documents and Settings\Administrator\Cookies\CAGLUNGL.txt [ /at.atwola.com ]
C:\Documents and Settings\Administrator\Cookies\CAINK9YR.txt [ /stat.onestat.com ]
C:\Documents and Settings\Administrator\Cookies\CAC5EROX.txt [ /ads.pubmatic.com ]
C:\Documents and Settings\Administrator\Cookies\CAYJ953P.txt [ /pro-market.net ]
C:\Documents and Settings\Administrator\Cookies\CAYE2LXY.txt [ /adxpose.com ]
C:\Documents and Settings\Administrator\Cookies\CAMWKKYR.txt [ /invitemedia.com ]
C:\Documents and Settings\Administrator\Cookies\CA8CG9S7.txt [ /lucidmedia.com ]
C:\Documents and Settings\Administrator\Cookies\CA2JG5MB.txt [ /filter.plusfind.net ]
C:\Documents and Settings\Administrator\Cookies\CA3LIWI1.txt [ /dc.tremormedia.com ]
C:\Documents and Settings\Administrator\Cookies\CA6X0ZG1.txt [ /imrworldwide.com ]
C:\Documents and Settings\Administrator\Cookies\CAQV45IZ.txt [ /eyewonder.com ]
C:\Documents and Settings\Administrator\Cookies\CAD0ILHV.txt [ /bizzclick.com ]
C:\Documents and Settings\Administrator\Cookies\CA0I8EGY.txt [ /ads.undertone.com ]
C:\Documents and Settings\Administrator\Cookies\CAE507KB.txt [ /adserver.leanmarket.com ]
C:\Documents and Settings\Administrator\Cookies\CAIT650T.txt [ /doubleclick.net ]
C:\Documents and Settings\Administrator\Cookies\CAVG3LZY.txt [ /pointroll.com ]
C:\Documents and Settings\Administrator\Cookies\CA6BE1WZ.txt [ /questionmarket.com ]
C:\Documents and Settings\Administrator\Cookies\CA2O7ITN.txt [ /ox-d.fondnessmedia.com ]
C:\Documents and Settings\Administrator\Cookies\CAZK51VK.txt [ /serving-sys.com ]
C:\Documents and Settings\Administrator\Cookies\CA0FMZGH.txt [ /burstnet.com ]
C:\Documents and Settings\Administrator\Cookies\CA7G1JFC.txt [ /fastclick.net ]
C:\Documents and Settings\Administrator\Cookies\CA4P6B4H.txt [ /advertising.com ]
C:\Documents and Settings\Administrator\Cookies\CASTO6NV.txt [ /r1-ads.ace.advertising.com ]
C:\Documents and Settings\Administrator\Cookies\CA1YJ3TV.txt [ /ads.pointroll.com ]
C:\Documents and Settings\Administrator\Cookies\CASHQN81.txt [ /adinterax.com ]
C:\Documents and Settings\Administrator\Cookies\CAE73EGH.txt [ /ad.yieldmanager.com ]
C:\Documents and Settings\Administrator\Cookies\CAO7Q9SB.txt [ /yieldmanager.net ]
C:\Documents and Settings\Administrator\Cookies\CAWHA7SX.txt [ /www.burstnet.com ]
C:\Documents and Settings\Administrator\Cookies\CAOLMVKT.txt [ /insightexpressai.com ]
C:\Documents and Settings\Administrator\Cookies\CA29KZOL.txt [ /realmedia.com ]
C:\Documents and Settings\Administrator\Cookies\CAXW8RD9.txt [ /openstat.net ]
C:\Documents and Settings\Administrator\Cookies\CAN42ROG.txt [ /casalemedia.com ]
.mediaplex.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.247realmedia.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.atdmt.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.revsci.net [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.imrworldwide.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.imrworldwide.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.insightexpressai.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.serving-sys.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.serving-sys.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.serving-sys.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.serving-sys.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.serving-sys.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.serving-sys.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.serving-sys.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.viewablemedia.net [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]
.bs.serving-sys.com [ C:\DOCUMENTS AND SETTINGS\ADMINISTRATOR\APPLICATION DATA\MOZILLA\FIREFOX\PROFILES\15AERG66.DEFAULT\COOKIES.SQLITE ]

#5 erikjlee

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Posted 13 December 2011 - 12:41 AM

GMER log:

GMER 1.0.15.15641 - http://www.gmer.net
Rootkit scan 2011-12-12 21:39:35
Windows 5.1.2600 Service Pack 3 Harddisk0\DR0 -> \Device\Ide\IdeDeviceP1T1L0-9 WDC_WD7500AADS-00L5B1 rev.01.01A01
Running: dl0zw4sf.exe; Driver: C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\pxtdapoc.sys


---- System - GMER 1.0.15 ----

SSDT \??\C:\Program Files\SUPERAntiSpyware\SASKUTIL.SYS (SASKUTIL.SYS/SUPERAdBlocker.com and SUPERAntiSpyware.com) ZwTerminateProcess [0xB2573640]

---- Kernel code sections - GMER 1.0.15 ----

.text C:\WINDOWS\System32\DRIVERS\nv4_mini.sys section is writeable [0xB65833A0, 0x59FFE5, 0xE8000020]
.text C:\WINDOWS\system32\DRIVERS\atksgt.sys section is writeable [0xB1B5C300, 0x3B6D8, 0xE8000020]
.text C:\WINDOWS\system32\DRIVERS\lirsgt.sys section is writeable [0xB8440300, 0x1BEE, 0xE8000020]

---- User code sections - GMER 1.0.15 ----

.text C:\Program Files\Mozilla Firefox\plugin-container.exe[2448] USER32.dll!SetWindowLongA 7E42C29D 5 Bytes JMP 106AC350 C:\Program Files\Mozilla Firefox\xul.dll (Mozilla Foundation)
.text C:\Program Files\Mozilla Firefox\plugin-container.exe[2448] USER32.dll!SetWindowLongW 7E42C2BB 5 Bytes JMP 106AC2E2 C:\Program Files\Mozilla Firefox\xul.dll (Mozilla Foundation)
.text C:\Program Files\Mozilla Firefox\plugin-container.exe[2448] USER32.dll!GetWindowInfo 7E42C49C 5 Bytes JMP 1045E363 C:\Program Files\Mozilla Firefox\xul.dll (Mozilla Foundation)
.text C:\Program Files\Mozilla Firefox\plugin-container.exe[2448] USER32.dll!TrackPopupMenu 7E46531E 5 Bytes JMP 1045E91C C:\Program Files\Mozilla Firefox\xul.dll (Mozilla Foundation)
.text C:\Program Files\PeerBlock\peerblock.exe[2776] kernel32.dll!SetUnhandledExceptionFilter 7C84495D 5 Bytes JMP 004314E0 C:\Program Files\PeerBlock\peerblock.exe (PeerBlock/PeerBlock, LLC)
.text C:\Program Files\Mozilla Firefox\firefox.exe[3756] ntdll.dll!LdrLoadDll 7C91632D 5 Bytes JMP 01262EC0 C:\Program Files\Mozilla Firefox\xul.dll (Mozilla Foundation)

---- EOF - GMER 1.0.15 ----

#6 TheShooter93

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Posted 13 December 2011 - 06:50 PM

How's the computer behaving now?

CCNA R&SCCNA Security | Network+  |  B.S. - Information Technology | Cyber Security Engineer

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#7 erikjlee

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Posted 13 December 2011 - 09:06 PM

The sound still doesn't work... only my G35 usb headset works, which still concerns me. I don't see any odd processes running or see any other indication of problems other than the sound.

As far as running programs/games etc, it never really showed signs of running slow.

#8 TheShooter93

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Posted 14 December 2011 - 12:33 AM

What's the make and model of the PC?

Try installing the latest audio drivers.

CCNA R&SCCNA Security | Network+  |  B.S. - Information Technology | Cyber Security Engineer

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#9 erikjlee

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Posted 14 December 2011 - 12:51 PM

I custom built it 2 years ago from parts, but I do know it has a Gigabit MB and I'm just using the onboard sound (don't know the exact model off the top of my head). I'll update (or try reinstalling) the sound driver when i get home tonight and let you know.

#10 TheShooter93

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Posted 14 December 2011 - 01:04 PM

Sounds good. :thumbup2:

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