Home Malware Programs Trojans Trojan.Ransom.DU

Trojan.Ransom.DU

Posted: November 1, 2011

Threat Metric

Threat Level: 8/10
Infected PCs: 110
First Seen: November 1, 2011
Last Seen: May 14, 2022
OS(es) Affected: Windows

Trojan:Win32/Ransom.DU is a malicious Trojan that prevents the affected PC users from accessing their desktop. Trojan:Win32/Ransom.DU creates a window that hides the entire desktop of the targeted PC, implying that the computer has been involved in illegitimate activities on the Internet. The created window pretends to be a warning message that comes from the German Federal Police. To prevent the PC user from accessing their desktop, the window is created in such a way so that it sits above all non-topmost windows and should stay above them, even when the window is deactivated. Once installed, Trojan:Win32/Ransom.DU makes system changes and displays pop-up warning messages. The fake warning message states that the only way to unlock the computer is to pay 100 Euros via Ukash or PaySafeCard. If your PC has been infected with Trojan:Win32/Ransom.DU, you should remove it as soon as possible.

Aliases

Generic24.KIS [AVG]W32/RANSOM.ANE!tr [Fortinet]Win-Trojan/Seint.163840.AU [AhnLab-V3]Trojan/Win32.VBKrypt.gen [Antiy-AVL]Heuristic.BehavesLike.Win32.Downloader.A [McAfee-GW-Edition]TR/LockScreen.Z [AntiVir]Trojan.DownLoader4.34959 [DrWeb]Mal/VBCheMan-A [Sophos]Trojan.Generic.KD.312579 [BitDefender]Trojan.Win32.VBKrypt.esic [Kaspersky]Win32:Malware-gen [Avast]Generic.bfr!cl [McAfee]Trojan.VBKrypt.esic [CAT-QuickHeal]Generic Trojan [Panda]Pakes.KZE [AVG]
More aliases (141)

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:



C:\Users\<username>\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\51\5a6e6173-4aeb69aa File name: 5a6e6173-4aeb69aa
Size: 196.6 KB (196608 bytes)
MD5: cf218ea54533c9192f95229790288bfc
Detection count: 26
Path: C:\Users\<username>\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\51\5a6e6173-4aeb69aa
Group: Malware file
Last Updated: May 14, 2022
%WINDIR%\System32\drivers\netbt.sys File name: netbt.sys
Size: 162.81 KB (162816 bytes)
MD5: ec96a6ecec8c5cd2c16e4f750dd1d2b4
Detection count: 14
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: November 11, 2011
%WINDIR%\System32\drivers\cdrom.sys File name: cdrom.sys
Size: 62.97 KB (62976 bytes)
MD5: 1a74b29c7fd408460117ed1d9330fdd7
Detection count: 12
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: November 8, 2011
%APPDATA%\jashla.exe File name: jashla.exe
Size: 163.84 KB (163840 bytes)
MD5: f7845bc702fdf58e4413fdd59418be7f
Detection count: 11
File type: Executable File
Mime Type: unknown/exe
Path: %APPDATA%
Group: Malware file
Last Updated: August 6, 2012
%ALLUSERSPROFILE%\Application Data\hniYtlAmoTCQf.exe File name: hniYtlAmoTCQf.exe
Size: 401.8 KB (401808 bytes)
MD5: f58974f172015a6262d29f8243239845
Detection count: 9
File type: Executable File
Mime Type: unknown/exe
Path: %ALLUSERSPROFILE%\Application Data
Group: Malware file
Last Updated: November 3, 2011
%WINDIR%\System32\drivers\redbook.sys File name: redbook.sys
Size: 57.6 KB (57600 bytes)
MD5: 9e8f3d6ee2a69a6e004b5eb836bedac7
Detection count: 7
File type: System file
Mime Type: unknown/sys
Path: %WINDIR%\System32\drivers
Group: Malware file
Last Updated: November 11, 2011

More files

One Comment

  • Geezar says:

    Win32.Ransom arrived on my laptop via an attempted music download. The file actually downloaded was within a .rar package (similar to .zip file), as expected, however the .rar contained a .pdf and when I inadvertently tried to open it, Adobe Reader launched and then I received the German message saying that my Windows system had been suspended due to content on my computer - scary or what?! At this stage I could CTRL+ALT+DEL, which took me to that screen but selecting any option simply took me back to the German text. From there I could only press on one button which took me to a payment screen requesting 50 Euro to 'unlock' windows.

    Thankfully, I was able to boot up in safe mode and retrieve my data via an external hard drive, which I then scanned using a clean PC. The malware disabled connection to the internet so I downloaded Microsoft Security Essentials from the Microsoft website via another PC and installed on mine via a USB thumb drive.

    MSE found AND REMOVED Win32.Ransom straight away - FOR FREE!!!

    I now had access to the internet which allowed MSE to update. I then ran a deep scan of my whole hard drive to look for any other threats. The great thing about MSE is that you don't need to pay for an anti-virus software such as Norton / Kapersky or any other virus detection/removal tool as it monitors your system live and can be set up to run regular scans to keep you "safe". Why it isn't preloaded on Windows 7 the same way Windows Firewall is, is beyond me...

    Now I have Windows back I'm wondering whether I should do a complete wipe and fresh install in case there are any remnants of malware embedded within my system?

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