|Type||Ransomware, Trojan Ransomware|
|Short Description||Once installed, Shade will encrypt files on the victim’s PC, and will download additional malware.|
|Symptoms||Files are encrypted and a ransom message takes over the desktop.|
|Distribution Method||Exploit kits (compromised websites) and spam email campaigns.|
|Detection tool||Download Malware Removal Tool, to See If Your System Has Been Affected By Trojan-Ransom.Win32.Shade|
Ransomware has turned out to be a most effective way to make money online. Many of the recently detected ransomware threats share the same basics, with slight differences such as the targeted files and encryption keys used. Shade Ransomware also detected as Trojan-Ransom.Win32.Shade doesn’t make an exception. Most of the attacks are registered in Russia, Germany, Ukraine and Austria are next on the list of Shade’s targets.
Trojan-Ransom.Win32.Shade Distribution Tactics
Aggressive Spam Campaigns
Malware, and specifically ransomware, is typically spread via spam and exploit kits, the Nuclear Exploit Kit, in particular. If the ransom software is spread via spam emails, the user will receive a message with a malicious file attached to it. The infection is initiated, once the attachment is open. Shade ransomware has been using the following files to spread itself across the Internet:
- doc_dlea podpisi.com
- doc_dlea podpisi.rar
- doc_dlea podpisi.rar
- неподтвержден 308853.scr
- documenti dlea podpisi 05.08.2015.scr.exe
- akt sverki za 17082015.scr
It is important to note that any of the file names can be changed for every single spam campaign.
When Shade Ransomware is distributed via exploit kits such as the Nuclear EK, the attack is more dangerous. It started when the user lands on a compromised page. Both a legitimate and an illegal website can be compromised by cyber criminals. The problem is that in a prevalent number of cases, the user remains unaware of the attack. Until it’s too late…
What usually happens is malicious code is inserted on the website, and it exploits a vulnerability in the browser. Once the vulnerability is located, the Trojan Ransomware will be silently installed on the system.
What is the difference between the spam and EK distribution method?
When an exploit kit is employed to spread the ransomware, no user interaction is needed. In other words, there is no executable file that needs to be run.
On the ransomware is installed, it connects to a remote server (Command & Control). Not surprisingly, the server is located in the Tor network. The infection will be reported there and a public RSA-3072 key will be requested to encrypt the files on the victim’s machine. If the connection is unsuccessful, Shade ransomware will choose from the 100 public keys, stored within it body.
Once the process is done, the files will be encrypted via using a static list of the following extensions:
After the encryption is finished, the following message will be displayed in the victim’s desktop:
The ransom request will be left in README.txt documents from 1 to 10. According to researchers at Kaspersky’s Secure List, the contents of the messages are the same:
It is crucial to note that Trojan-Ransom.Win32.Shade’s attack doesn’t stop here. The process will not be terminated. Instead, an infinite loop of malware infections will be initiated via contacting the C&C server and obtating a list of malicious URLs. The activity described is often referred as download bot.
According to malware experts, malware of the following families is often downloaded:
Read more about the Kovter ransom family:
If you have become a victim of Shade ransomware, it is highly recommended to run a full system scan to remove the malicious threat. Don’t forget that the Trojan is designed to download malware of different families.
You can refer to the following instructions to rid the system of Trojan-Ransom.Win32.Shade:
1. Start Your PC in Safe Mode to Remove Trojan-Ransom.Win32.Shade.
For Windows XP, Vista, 7 systems:
1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
– For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.
– For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.
3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.
4. Log on to your computer using your administrator account
While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.
For Windows 8, 8.1 and 10 systems:
Step 1: Open the Start Menu
Step 2: Whilst holding down Shift button, click on Power and then click on Restart.
Step 3: After reboot, the aftermentioned menu will appear. From there you should choose Troubleshoot.
Step 4: You will see the Troubleshoot menu. From this menu you can choose Advanced Options.
Step 5: After the Advanced Options menu appears, click on Startup Settings.
Step 6: Click on Restart.
Step 7: A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart.
2. Remove Trojan-Ransom.Win32.Shade automatically by downloading an advanced anti-malware program.
To clean your computer you should download an updated anti-malware program on a safe PC and then install it on the affected computer in offline mode. After that you should boot into safe mode and scan your computer to remove all Trojan-Ransom.Win32.Shade associated objects.
Security engineers recommend that you back up your files immediately, preferably on an external memory carrier in order to be able to restore them. In order to protect yourself from Trojan-Ransom.Win32.Shade (For Windows Users) please follow these simple steps:
For Windows 7 and earlier:
1-Click on Windows Start Menu
2-Type Backup And Restore
3-Open it and click on Set Up Backup
4-A window will appear asking you where to set up backup. You should have a flash drive or an external hard drive. Mark it by clicking on it with your mouse then click on Next.
5-On the next window, the system will ask you what do you want to backup. Choose the ‘Let Me Choose’ option and then click on Next.
6-Click on ‘Save settings and run backup’ on the next window in order to protect your files from possible attacks by Trojan-Ransom.Win32.Shade.
For Windows 8, 8.1 and 10:
1-Press Windows button + R
2-In the window type ‘filehistory’ and press Enter
3-A File History window will appear. Click on ‘Configure file history settings’
4-The configuration menu for File History will appear. Click on ‘Turn On’. After its on, click on Select Drive in order to select the backup drive. It is recommended to choose an external HDD, SSD or a USB stick whose memory capacity is corresponding to the size of the files you want to backup.
5-Select the drive then click on ‘Ok’ in order to set up file backup and protect yourself from Trojan-Ransom.Win32.Shade.
Enabling Windows Defense Feature:
1- Press Windows button + R keys.
2- A run windows should appear. In it type ‘sysdm.cpl’ and then click on Run.
3- A System Properties windows should appear. In it choose System Protection.
5- Click on Turn on system protection and select the size on the hard disk you want to utilize for system protection.
6- Click on Ok and you should see an indication in Protection settings that the protection from Trojan-Ransom.Win32.Shade is on.
Restoring a file via Windows Defense feature:
1-Right-click on the encrypted file, then choose Properties.
2-Click on the Previous Versions tab and then mark the last version of the file.
3-Click on Apply and Ok and the file encrypted by Trojan-Ransom.Win32.Shade should be restored.