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

Various malware removed, some problems remain


  • Please log in to reply
17 replies to this topic

#1 infected19

infected19

  • Members
  • 10 posts
  • OFFLINE
  •  
  • Local time:02:18 PM

Posted 02 August 2009 - 07:56 AM

Hello,

I've recently removed various different malware from one of my computers (XP Pro SP3 English on a notebook), including some trojans and hijackers. Mainly I used Malwarebytes and Superantispyware (when AVG Free, Spybot & Ad-Aware didn't help).

The symptoms of said malware included browsers (Chrome, mostly) not starting normally anymore, icons being placed on my desktop and other things. These things have ceased now and everything's working again.

However, for some of the error messages I found recommendations to run ComboFix, which I tried. Whenever I downloaded CF (incl. renaming the downloaded file at the download) and started it, I got an error message it was compromised and that I might have the Virut file patching virus on my system. A Virut remover tool from Symtantec found it in winlogon and removed it during a safe mode boot.

Back in normal mode I tried running CF again to see whether the problem persisted - it did. Aside of that one more symptom I'm experiencing are other programs not starting up as usual but throwing "The application failed to initialize properly." errors with various error codes to them. Finally there is a file Bug.txt in my C:\ root:

32788R22FWJFW\swreg.exe import 32788R22FWJFW\EXE.reg

32788R22FWJFW\PEV.exe UZIP 32788R22FWJFW\License\pv_5_2_2.zip 32788R22FWJFW\

32788R22FWJFW\PV.exe -kf *.pif nircmd.* ANDRE.EXE TOLO.exe Merlin.scr jalang.exe jalangkung.exe jantungan.exe DOSEN.exe C3W3K4MPUS.exe
Killing '*.pif'
"C:\32788R22FWJFW\n.pif" cmdwait 2500 exec hide "~$folder.system$\cmd.execf" /c 32788R22FWJFW\prep.cmd (3384)
Killing 'nircmd.*'
Killing 'ANDRE.EXE'
Killing 'TOLO.exe'
Killing 'Merlin.scr'
Killing 'jalang.exe'
Killing 'jalangkung.exe'
Killing 'jantungan.exe'
Killing 'DOSEN.exe'
Killing 'C3W3K4MPUS.exe'

MOVE /Y 32788R22FWJFW\PV.exe 32788R22FWJFW\PV.cfexe
The system cannot find the file specified.

32788R22FWJFW\PV.cfexe -kf *.pif nircmd.* ANDRE.EXE TOLO.exe Merlin.scr jalang.exe jalangkung.exe jantungan.exe DOSEN.exe C3W3K4MPUS.exe
Killing '*.pif'
Killing 'nircmd.*'
Killing 'ANDRE.EXE'
Killing 'TOLO.exe'
Killing 'Merlin.scr'
Killing 'jalang.exe'
Killing 'jalangkung.exe'
Killing 'jantungan.exe'
Killing 'DOSEN.exe'
Killing 'C3W3K4MPUS.exe'
pv: No matching processes found

PUSHD "C:\32788R22FWJFW"

IF NOT EXIST pev.cfexe COPY /Y pev.exe pev.cfexe

IF NOT EXIST NircmdB.exe COPY /Y Nircmd.cfexe NircmdB.exe

SET "Comspec=C:\WINDOWS\system32\cmd.execf"

IF NOT EXIST C:\WINDOWS\system32\cmd.exe GOTO Not_NT

IF EXIST OsVer EXIT

VER 1>OsVer

GREP.cfexe -F "5.2." OsVer

IF 1 == 0 GOTO Not_NT

GREP.cfexe -F "5.1.2" OsVer 1>XP.mac

IF 0 == 0 GOTO NT

GREP.cfexe -isq "ProductType.*WinNT" WinNT00 || GOTO Not_NT

SED.CFEXE "/^PATH=/I!d; s///; s/\x22//g" Oripath 1>OriPath00

PEV.EXE -rtf -s+901 .\OriPath00 && (
SED.CFEXE -r "s/\x22//g; s/(.{900}).*/\1/; s/;[^;]*$//" OriPath00 1>OriPath01
FOR /F "TOKENS=*" %G IN (OriPath01) DO @SET "PATH=C:\32788R22FWJFW;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32\wbem;%G"
)

IF NOT EXIST OriPath01 FOR /F "TOKENS=*" %G IN (OriPath00) DO SET "PATH=C:\32788R22FWJFW;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32\wbem;%G"

SET "PATH=C:\32788R22FWJFW;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32\wbem;C:\Program Files\Internet Explorer;;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\system32\nls;C:\WINDOWS\system32\nls\ENGLISH;C:\Program Files\Intel\WiFi\bin\;C:\WINDOWS\system32\WindowsPowerShell\v1.0;C:\Program Files\SSH Communications Security\SSH Secure Shell;C:\Program Files\UltraEdit\"
Killing 'runonce.exe'
Killing 'grpconv.exe'
Killing 'procmon.exe'
Killing 'ANDRE.EXE'
Killing 'TOLO.exe'
Killing 'Merlin.scr'
Killing 'jalang.exe'
Killing 'jalangkung.exe'
Killing 'jantungan.exe'
Killing 'DOSEN.exe'
Killing 'C3W3K4MPUS.exe'
pv: No matching processes found

PEV -rtf --c:##5# .\* and { License.exe or 32788R22FWJFW.exe or OsVer.exe or WinNT.exe or N_.exe } 1>temp00 && (
PV -o%f * 1>temp01
PEV -tf -t!o --files:temp01 --c:##5#b#f# 1>temp02
GREP -Fif temp00 temp02 1>temp03
SED "/.* /!d; s///" temp03 1>temp04
SED ":a; $!N; s/\n/\x22 \x22/; ta; s/.*/\x22&\x22/" temp04 1>temp05
FOR /F "TOKENS=*" %G IN (temp05) DO @NIRCMD KILLPROCESS %G
)

CALL :MDCheck
Could Not Find C:\32788R22FWJFW\md5sum00.pif

PEV -rtf -md5ED122805CA0606A2320638DF78B93767 .\md5sum.pif || CALL :MDFaiL ChkSum_Fail
.\md5sum.pif

PEV -tf --files:files.pif --c:##5#b#f# 1>mdCheck00.dat

GREP -vs "^!MD5:" mdCheck00.dat 1>mdCheck0a.dat

GREP -Fvf md5sum.pif mdCheck0a.dat 1>mdCheck01.dat && CALL :MDFaiL

CALL LANG.bat
Active code page: 1252

NIRCMD INFOBOX "!! ALERT !! It is NOT SAFE to continue!~n~nThe contents of the ComboFix package has been compromised.~nPlease download a fresh copy from:~n~nhttp://www.bleepingcomputer.com/combofix/how-to-use-combofix~n~nNote: You may be infected with a file patching virus 'Virut'" "Error" ""

IF EXIST "C:\Documents and Settings\Name\My Documents\Combo-Fix.exe" IF NOT EXIST "C:\Documents and Settings\Name\My Documents\Combo-Fix.exe\" DEL /A/F "C:\Documents and Settings\Name\My Documents\Combo-Fix.exe"

GOTO END

IF EXIST "C:\WINDOWS\system32\cmd.execf" MOVE /Y "C:\WINDOWS\system32\cmd.execf" "C:\DOCUME~1\Name\LOCALS~1\Temp"

CD ..

IF DEFINED cfldr RD /S/Q "32788R22FWJFW"
The system cannot find the path specified.
The system cannot find the path specified.
The system cannot find the path specified.


Not sure whether that is a CF created file or something else; at least it seems to have the error I'm getting when running CF.

EDIT: Another thing I noticed recently was that some websites, including symantec.com and microsoft.com won't be resolved by DNS (direct IP works, though).

Thanks lots for your help!

Edited by infected19, 02 August 2009 - 09:54 AM.


BC AdBot (Login to Remove)

 


m

#2 DaChew

DaChew

    Visiting Alien


  • BC Advisor
  • 10,317 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:millenium falcon and rockytop
  • Local time:03:18 PM

Posted 02 August 2009 - 11:30 AM

I'm afraid I have very bad news.

Your system is infected with a nasty variant of Virut, a polymorphic file infector with IRCBot functionality which infects .exe, .scr files, downloads more malicious files to your system, and opens a back door that compromises your computer. According to this Norman White Paper Assessment of W32/Virut, some variants can infect the HOSTS file and block access to security related web sites. Other variants of virut can even penetrate and infect .exe files within compressed files (.zip, .cab, rar). Virux is an even more complex file infector which can embed an iframe into the body of web-related files and infect script files (.php, .asp, and .html). When Virut creates infected files, it also creates non-functional files that are corrupted beyond repair and in some instances can disable Windows File Protection. In many cases the infected files cannot be disinfected properly by your anti-virus. When disinfection is attempted, the files become corrupted and the system may become irreparable. The longer virut remains on a computer, the more critical system files will become infected and corrupt so the degree of infection can vary.

The virus disables Windows File Protection by injecting code into the "winlogon.exe" process that patches system code in memory.

CA Virus detail of W32/Virut

The virus has a number of bugs in its code, and as a result it may misinfect a proportion of executable files....some W32/Virut.h infections are corrupted beyond repair.

McAfee Risk Assessment and Overview of W32/Virut

There are bugs in the viral code. When the virus produces infected files, it also creates non-functional files that also contain the virus...Due to the damaged caused to files by virut it's possible to find repaired but corrupted files. They became corrupted by the incorrect writing of the viral code during the process of infection. undetected, corrupted files (possibly still containing part of the viral code) can also be found. this is caused by incorrectly written and non-function viral code present in these files.

AVG Overview of W32/VirutThis kind of infection is contracted and spread by visiting remote, crack and keygen sites. These type of sites are infested with a smörgåsbord of malware and an increasing source of system infection. However, the CA Security Advisor Research Blog says they have found MySpace user pages carrying the malicious Virut URL. Either way you can end up with a computer system so badly damaged that recovery is not possible and it cannot be repaired. When that happens there is nothing you can do besides reformatting and reinstalling the OS.

...warez and crack web pages are being used by cybercriminals as download sites for malware related to VIRUT and VIRUX. Searches for serial numbers, cracks, and even antivirus products like Trend Micro yield malcodes that come in the form of executables or self-extracting files...quick links in these sites also lead to malicious files. Ads and banners are also infection vectors...

Keygen and Crack Sites Distribute VIRUX and FakeAV

If your computer was used for online banking, has credit card information or other sensitive data on it, you should disconnect from the Internet until your system is cleaned. All passwords should be changed immediately to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised. You should change each password using a clean computer and not the infected one. If not, an attacker may get the new passwords and transaction information. If using a router, you need to reset it with a strong logon/password so the malware cannot gain control before connect again. Banking and credit card institutions should be notified of the possible security breach. Because your computer was compromised please read:There is no guarantee this infection can be completely removed. In some instances it may have caused so much damage to your system that it cannot be completely cleaned or repaired. The malware may leave so many remnants behind that security tools cannot find them. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Reinstalling Windows without first wiping the entire hard drive with a repartition and/or format will not remove the infection. The reinstall will only overwrite the Windows files. Any malware on the system will still be there afterwards. Please read:
Chewy

No. Try not. Do... or do not. There is no try.

#3 infected19

infected19
  • Topic Starter

  • Members
  • 10 posts
  • OFFLINE
  •  
  • Local time:02:18 PM

Posted 02 August 2009 - 11:33 AM

I don't want to reformat, so far. I've seen some procedures described in similar threads in this forum - could you walk me through this, please?

#4 DaChew

DaChew

    Visiting Alien


  • BC Advisor
  • 10,317 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:millenium falcon and rockytop
  • Local time:03:18 PM

Posted 02 August 2009 - 11:36 AM

If you insist on trying to fix this infection instead of following our advice to reformat and reinstall your operating system, there are various rescue disks available from major anti-virus vendors which you can try. Keep in mind, even the vendors like Kaspersky say there is no quarantee that some files will not get corrupted during the disinfection process. In the end most folks end up reformatting out of frustration after spending hours attempting to repair and remove infected files. IMO the safest and easiest thing to do is just reformat and reinstall Windows.

Bleeping Computer DOES NOT assume any responsibility for your attempt to repair this infection using any of the following tools. You do this at your own risk and against our advice.

These are links to Anti-virus vendors that offer free LiveCD or Rescue CD utilities that are used to boot from for repair of unbootable and damaged systems, rescue data, scan the system for virus infections. Burn it as an image to a disk to get a bootable CD. All (except Avira) are in the ISO Image file format. Avira uses an EXE that has built-in CD burning capability.If you are not sure how to burn an image, please read How to write a CD/DVD image or ISO. If you need a FREE utility to burn the ISO image, download and use ImgBurn.
Chewy

No. Try not. Do... or do not. There is no try.

#5 DaChew

DaChew

    Visiting Alien


  • BC Advisor
  • 10,317 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:millenium falcon and rockytop
  • Local time:03:18 PM

Posted 02 August 2009 - 11:37 AM

This is an advanced procedure and there's no walking anyone thru it.
Chewy

No. Try not. Do... or do not. There is no try.

#6 infected19

infected19
  • Topic Starter

  • Members
  • 10 posts
  • OFFLINE
  •  
  • Local time:02:18 PM

Posted 02 August 2009 - 11:39 AM

Well, thanks. I'm not a complete newbie so I'll have a look at this.

If you have any other things I could try (removal tools etc.), please let me know.

#7 infected19

infected19
  • Topic Starter

  • Members
  • 10 posts
  • OFFLINE
  •  
  • Local time:02:18 PM

Posted 02 August 2009 - 11:52 AM

Another thing: Is the bug.txt I mentioned above something CF created or is it part of the virus?

#8 DaChew

DaChew

    Visiting Alien


  • BC Advisor
  • 10,317 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:millenium falcon and rockytop
  • Local time:03:18 PM

Posted 02 August 2009 - 12:04 PM

It's not part of virut
Chewy

No. Try not. Do... or do not. There is no try.

#9 infected19

infected19
  • Topic Starter

  • Members
  • 10 posts
  • OFFLINE
  •  
  • Local time:02:18 PM

Posted 02 August 2009 - 05:01 PM

For the record & for anyone trying to remove Virut, here's the process I followed (and which seems to have worked without reinstalling Windows/formatting):

Boot into Safe Mode with a CD that has

- Dr. Web's Cure IT (http://www.freedrweb.com/cureit/)
- AVG's Virut remover (http://www.avg.com/us.virus-removal.ndi-67762)

The important bit seems to be that you have the files burnt to the CD on a clean system. The benefit of the CD lies in being read-only.

In Safe Mode, first Dr. Web's (complete scan), click 'Cure' if something's found. Then use AVG's Virut remover; it might send you to reboot immediately if it finds the virus in memory. The fix will be done during booting up and took a few hours for my system. The message 'Cleaned.' during that fixing apparently doesn't mean 'deleted' (so you don't end up with a dead system if it cleans lots of files).

After the fixing Windows booted normally and everything worked again.

Edited by infected19, 02 August 2009 - 05:07 PM.


#10 DaChew

DaChew

    Visiting Alien


  • BC Advisor
  • 10,317 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:millenium falcon and rockytop
  • Local time:03:18 PM

Posted 02 August 2009 - 05:04 PM

Use your computer for a while, open some programs, surf some

Then run this online scan

Please do an online scan with Kaspersky WebScanner

Click on Kaspersky Online Scanner

You will be prompted to install an ActiveX component from Kaspersky, Click Yes.
  • The program will launch and then begin downloading the latest definition files:
  • Once the files have been downloaded click on NEXT
  • Now click on Scan Settings
  • In the scan settings make sure that the following are selected:
    • Scan using the following Anti-Virus database:
    Extended (if available otherwise Standard)
    • Scan Options:
    Scan Archives
    Scan Mail Bases
  • Click OK
  • Now under select a target to scan:Select My Computer
  • This will program will start and scan your system.
  • The scan will take a while so be patient and let it run.
  • Once the scan is complete it will display if your system has been infected.
    • Now click on the Save as Text button:
  • Save the file to your desktop.
  • Copy and paste that information in your next post.

Chewy

No. Try not. Do... or do not. There is no try.

#11 DaChew

DaChew

    Visiting Alien


  • BC Advisor
  • 10,317 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:millenium falcon and rockytop
  • Local time:03:18 PM

Posted 02 August 2009 - 05:05 PM

Posting a cure for any virut infection, even if it's an infection that has not fully executed, is fine. But make sure you are cured.

Edited by DaChew, 02 August 2009 - 05:11 PM.

Chewy

No. Try not. Do... or do not. There is no try.

#12 infected19

infected19
  • Topic Starter

  • Members
  • 10 posts
  • OFFLINE
  •  
  • Local time:02:18 PM

Posted 02 August 2009 - 05:45 PM

It seems Java for Internet Explorer doesn't work (I never use IE, so I'm not sure how to re-enable it). I've tried uninstalling & reinstalling the JRE, but that didn't solve the problem.

In the scanner window it detects the JRE version correctly, but it doesn't start downloading (error "Starting Java applet has failed! Please go online to use this program.").

Edited by infected19, 02 August 2009 - 05:51 PM.


#13 DaChew

DaChew

    Visiting Alien


  • BC Advisor
  • 10,317 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:millenium falcon and rockytop
  • Local time:03:18 PM

Posted 02 August 2009 - 05:55 PM

http://majorgeeks.com/Kaspersky_Virus_Remo...Tool_d4515.html
Chewy

No. Try not. Do... or do not. There is no try.

#14 infected19

infected19
  • Topic Starter

  • Members
  • 10 posts
  • OFFLINE
  •  
  • Local time:02:18 PM

Posted 02 August 2009 - 07:07 PM

It appears there are other variants of Virut that the programs previously mentioned don't cover. So far I'm around 40% through the scans and have found a few files with Virut.ce (but no symptoms at all of an infection). Luckily the scanner does disinfect them as well.

Edited by infected19, 02 August 2009 - 07:08 PM.


#15 infected19

infected19
  • Topic Starter

  • Members
  • 10 posts
  • OFFLINE
  •  
  • Local time:02:18 PM

Posted 03 August 2009 - 08:14 AM

Scan
----
Scanned: 1455013
Detected: 12
Untreated: 0
Start time: 2009-08-03 01:04
Duration: 12:23:56
Finish time: 2009-08-03 13:27


Detected
--------
Status Object
------ ------
disinfected: virus Virus.Win32.Virut.ce File: C:\Program Files\Intel\Intel Matrix Storage Manager\Uninstall\x64\Difx64.exe
disinfected: virus Virus.Win32.Virut.ce File: C:\Program Files\Realtek\Audio\Drivers\WDM\CPLUtl64.exe
disinfected: virus Virus.Win32.Virut.ce File: C:\Program Files\Realtek\Audio\Drivers\WDM\RtkAudioService64.exe
disinfected: virus Virus.Win32.Virut.ce File: C:\Program Files\Realtek\Audio\Drivers\WDM\vncutil64.exe
disinfected: virus Virus.Win32.Virut.ce File: C:\Program Files\Realtek\Audio\InstallShield\CPLUtl64.exe
disinfected: virus Virus.Win32.Virut.ce File: C:\Program Files\Realtek\Audio\InstallShield\RtlUpd64.exe
disinfected: virus Virus.Win32.Virut.ce File: C:\Program Files\Realtek AC97\alcrmv64.exe
disinfected: virus Virus.Win32.Virut.ce File: C:\Program Files\Realtek AC97\CPLUtl64.exe
disinfected: virus Virus.Win32.Virut.ce File: F:\<removed>.exe
disinfected: virus Virus.Win32.Virut.ce File: F:\<removed>.exe
disinfected: virus Virus.Win32.Virut.ce File: F:\<removed>.exe
deleted: Trojan program Packed.Win32.Black.a File: F:\<removed>.exe


Edited by infected19, 03 August 2009 - 08:16 AM.





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users