Trojan.Ransom.DU
Posted: November 1, 2011
Threat Metric
The following fields listed on the Threat Meter containing a specific value, are explained in detail below:
Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.
Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.
Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.
Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.
% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.
| 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
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: 5a6e6173-4aeb69aaSize: 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.sysSize: 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.sysSize: 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.exeSize: 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.exeSize: 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.sysSize: 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
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?