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

Picked up a Trojan


  • Please log in to reply
5 replies to this topic

#1 kameri

kameri

  • Members
  • 5 posts
  • OFFLINE
  •  
  • Local time:11:21 AM

Posted 29 May 2009 - 10:03 AM

Ok, so here is the deal.

I had picked up some kind of Trojan Extortion thingy which asks me to pay dollarz in exchange for decryption of the files on my comp (txt, jpg, pdf etc... ). The whart i am, yesterday i clicked on some ringtones and haven't really payed attention and ran the file that had the icon same as any WMP file. Turned out it was some kind of .scr file and it encrypted most of the songs, txt files and pdf files aswell. Firefox stopped working so now I'm surfing by Chrome (and have to admitt that i like it more and more).

I've been looking around the net for this solution, but so far i came empty handed. Files on my desktop are cyphered to a " .vscrypt " extension. The guy asking for money has got email " otrazhenie_zla@mail.ru " and seems it is a new upgrade of the same trojan that had been spreading last year.

Dr.Web website was the only with some comprehensible information about this thing, but the repair software they were offering just can't cut it, cause it requires " crypted.txt " file which isn't made by this version of the thing i picked up.

Seems that trojan made some changes in " C:\Program Files\Flash Media Arts,inc\SWF Video " folder and registry, also made a folder " C:\vsworkdir " with "CSCA1.DLL" and "shantazh.jpg" files in it. I suspect that kernel.dll was changed too.

From what i understand, trojan was written in Delphi, but cannot be sure cause programing isn't my thing.

So far, AVG Free 8.5 was a complete crap, as it didn't detect the threat, Dr.WebŪ for Windows Workstations did nothing either, most of the spyware removers haven't been successful in finding any spyware /virus. I did HijackThis scan and put log file for analysis on this site so now i'm waiting to see what's gonna happen. Everything looks clean to me, but then again, i might be mistaken.

What i would really like is to save most of my photos from last summer and few pdf files with my work :-(

I'm in a dark here, so any advice would be appreciated.

BC AdBot (Login to Remove)

 


#2 boopme

boopme

    To Insanity and Beyond


  • Global Moderator
  • 72,759 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:NJ USA
  • Local time:05:21 AM

Posted 29 May 2009 - 10:31 AM

Hello please run this and we'll go from there.
Now run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2

MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself. Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the definition updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#3 kameri

kameri
  • Topic Starter

  • Members
  • 5 posts
  • OFFLINE
  •  
  • Local time:11:21 AM

Posted 29 May 2009 - 12:13 PM

I did as you instructed, says there are no infected files. But that still doesn't explain how files saved in txt get encrypted after reset. I had turned off system restore after that happened. Also i had scanned my computer with Dr Web 5.0

Here is what turned out in log file after scan: (I am running Intel Pentium 4, 2.6 GHz, 2 GB RAM and WinXP SP3 )
Malwarebytes' Anti-Malware 1.37
Database version: 2192
Windows 5.1.2600 Service Pack 3

29.5.2009 19:05:43
mbam-log-2009-05-29 (19-05-43).txt

Scan type: Quick Scan
Objects scanned: 79227
Time elapsed: 4 minute(s), 12 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)

---------------
I would like to decrypt my files, but i haven't seen anyone with the solution, let alone with similar problem :-(

#4 boopme

boopme

    To Insanity and Beyond


  • Global Moderator
  • 72,759 posts
  • OFFLINE
  •  
  • Gender:Male
  • Location:NJ USA
  • Local time:05:21 AM

Posted 29 May 2009 - 03:56 PM

Hi, Please submit these files to Virustotal and post back their reply here.
C:\Program Files\Flash Media Arts,inc\SWF Video " folder and registry, also made a folder " C:\vsworkdir " with "CSCA1.DLL" and "shantazh.jpg"
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#5 kameri

kameri
  • Topic Starter

  • Members
  • 5 posts
  • OFFLINE
  •  
  • Local time:11:21 AM

Posted 30 May 2009 - 09:17 AM

Ok, so what i did was this. The files located in "C:\vsworkdir" and the file in question, that i suspect caused these problems, were packed in .rar file and uploaded to the Virustotal.

Their results are here:

File possible_trojan_files.rar received on 2009.05.30 14:06:26 (UTC)
Antivirus;Version;Last Update;Result
a-squared;4.0.0.101;2009.05.30;-
AhnLab-V3;5.0.0.2;2009.05.29;-
AntiVir;7.9.0.180;2009.05.30;-
Antiy-AVL;2.0.3.1;2009.05.27;-
Authentium;5.1.2.4;2009.05.29;-
Avast;4.8.1335.0;2009.05.29;-
AVG;8.5.0.339;2009.05.30;-
BitDefender;7.2;2009.05.30;Gen:Trojan.Heur.981FE0D594
CAT-QuickHeal;10.00;2009.05.29;-
ClamAV;0.94.1;2009.05.30;-
Comodo;1220;2009.05.30;-
DrWeb;5.0.0.12182;2009.05.29;-
eSafe;7.0.17.0;2009.05.27;-
eTrust-Vet;31.6.6530;2009.05.30;-
F-Prot;4.4.4.56;2009.05.29;-
F-Secure;8.0.14470.0;2009.05.30;-
Fortinet;3.117.0.0;2009.05.30;-
GData;19;2009.05.30;Gen:Trojan.Heur.981FE0D594
Ikarus;T3.1.1.57.0;2009.05.30;-
K7AntiVirus;7.10.749;2009.05.29;Trojan.Win32.Malware.1
Kaspersky;7.0.0.125;2009.05.30;-
McAfee;5630;2009.05.29;-
McAfee+Artemis;5630;2009.05.29;-
McAfee-GW-Edition;6.7.6;2009.05.29;-
Microsoft;1.4701;2009.05.30;-
NOD32;4116;2009.05.29;-
Norman;6.01.05;2009.05.29;-
nProtect;2009.1.8.0;2009.05.30;-
Panda;10.0.0.14;2009.05.30;-
PCTools;4.4.2.0;2009.05.30;-
Prevx;3.0;2009.05.30;-
Rising;21.31.21.00;2009.05.27;-
Sophos;4.42.0;2009.05.30;-
Sunbelt;3.2.1858.2;2009.05.30;-
Symantec;1.4.4.12;2009.05.30;-
TheHacker;6.3.4.3.334;2009.05.29;-
TrendMicro;8.950.0.1092;2009.05.29;-
VBA32;3.12.10.6;2009.05.27;-
ViRobot;2009.5.29.1761;2009.05.29;-
VirusBuster;4.6.5.0;2009.05.29;-

Additional information
File size: 2369212 bytes
MD5...: 15b1ead3e433330fa67a83c1aad136c5
SHA1..: aa24211ec746dd7faf058d1ef5052ea15483e794
SHA256: db72a98a28c0c482ed999ba8583d693b6b1d973de12be0d8f329c2a79e2b82ce
ssdeep: -<br>
PEiD..: -
TrID..: File type identification<br>RAR Archive (83.3%)<br>REALbasic Project (16.6%)
PEInfo: -
PDFiD.: -
RDS...: NSRL Reference Data Set<br>-
So, from what i can see, just 7.5% of the antivirus progs detect a threat, which makes sence since it's made by some not so known hacker and not widely spread.

In my next reply, i am uploading contents of the "C:\Program Files\Flash Media Arts,inc\SWF Video" and we'll see where it takes me.

Edited by kameri, 30 May 2009 - 09:29 AM.


#6 kameri

kameri
  • Topic Starter

  • Members
  • 5 posts
  • OFFLINE
  •  
  • Local time:11:21 AM

Posted 30 May 2009 - 09:35 AM

Ok, so i packed contents of the "C:\Program Files\Flash Media Arts,inc\SWF Video" folder (it contained files "Free_update.exe", "svchost.exe", "Uninstall.exe", "Video_codec.exe", "Uninstall.ini")

Results from VirusTotal scan were:

File SWF_Video.rar received on 2009.05.30 14:25:17 (UTC)

Antivirus;Version;Last Update;Result

a-squared;4.0.0.101;2009.05.30;Backdoor.Win32.Bifrose!IK
AhnLab-V3;5.0.0.2;2009.05.29;Win-Trojan/Bifrose.229376.D
AntiVir;7.9.0.180;2009.05.30;TR/Dropper.Gen
Antiy-AVL;2.0.3.1;2009.05.27;-
Authentium;5.1.2.4;2009.05.29;-
Avast;4.8.1335.0;2009.05.29;Win32:Poison-KL
AVG;8.5.0.339;2009.05.30;-
BitDefender;7.2;2009.05.30;Gen:Trojan.Heur.0145BAAEAE
CAT-QuickHeal;10.00;2009.05.29;-
ClamAV;0.94.1;2009.05.30;-
Comodo;1220;2009.05.30;-
DrWeb;5.0.0.12182;2009.05.29;-
eSafe;7.0.17.0;2009.05.27;-
eTrust-Vet;31.6.6530;2009.05.30;-
F-Prot;4.4.4.56;2009.05.29;-
F-Secure;8.0.14470.0;2009.05.30;Backdoor.Win32.Bifrose.azbp
Fortinet;3.117.0.0;2009.05.30;W32/Bifrose.AZBP!tr.bdr
GData;19;2009.05.30;Gen:Trojan.Heur.0145BAAEAE
Ikarus;T3.1.1.57.0;2009.05.30;-
K7AntiVirus;7.10.749;2009.05.29;-
Kaspersky;7.0.0.125;2009.05.30;Backdoor.Win32.Bifrose.azbp
McAfee;5630;2009.05.29;-
McAfee+Artemis;5630;2009.05.29;Artemis!D3583AC12D06
McAfee-GW-Edition;6.7.6;2009.05.29;Trojan.Dropper.Gen
Microsoft;1.4701;2009.05.30;-
NOD32;4116;2009.05.29;-
Norman;6.01.05;2009.05.29;-
nProtect;2009.1.8.0;2009.05.30;-
Panda;10.0.0.14;2009.05.30;-
PCTools;4.4.2.0;2009.05.30;-
Prevx;3.0;2009.05.30;High Risk System Back Door
Rising;21.31.21.00;2009.05.27;-
Sophos;4.42.0;2009.05.30;-
Sunbelt;3.2.1858.2;2009.05.30;-
Symantec;1.4.4.12;2009.05.30;-
TheHacker;6.3.4.3.334;2009.05.29;-
TrendMicro;8.950.0.1092;2009.05.29;-
VBA32;3.12.10.6;2009.05.27;-
ViRobot;2009.5.29.1761;2009.05.29;-
VirusBuster;4.6.5.0;2009.05.29;-

Additional information
File size: 2229999 bytes
MD5...: a602a3797f4956cc3db5eeb3272eb553
SHA1..: 2ee56793a8d212ad493d72c9edbce117c49f562b
SHA256: 8074564c80002d24be9de6081283c0a2bda0b71fa2a221f236e5c652fe2784ee
ssdeep: -<br>
PEiD..: -
TrID..: File type identification<br>RAR Archive (83.3%)<br>REALbasic Project (16.6%)
PEInfo: -
PDFiD.: -
RDS...: NSRL Reference Data Set<br>-
packers (Kaspersky): Swc2Exe
Prevx info: <a href='http://info.prevx.com/aboutprogramtext.asp?PX5=9AA8E3870023B9B5001604089E83EF0059561A19' target='_blank'>http://info.prevx.com/aboutprogramtext.asp?PX5=9AA8E3870023B9B5001604089E83EF0059561A19</a>




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users