What is Qweuirtksd ransomware? And how does it execute its attack?
Qweuirtksd ransomware is a file-encrypting malware that was discovered at the end of September 2018. This crypto-malware encrypts user data and servers using AES 128 (CBC mode) and uses .qweuirtksd extension in marking its encrypted files. It demands a ransom of $500 in BTC. It seems to be targeting English-speaking users although it can still infect other users from all over the globe.
Once it infects a computer, it drops its malicious payload and executes it. The malicious payload then connects the infected computer to a remote Command and Control server controlled by the attackers. From this remote server, Qweuirtksd ransomware downloads other malicious components and places them to several system folders. After that it modifies the Windows Registry in order to achieve persistence and to launch or repress processes in the Windows environment. These registry entries are usually designed in a way to start the crypto-malware automatically on every system boot. Once all the modifications in the system are carried out, it then begins the encryption process using AES 128 (CBC mode). After the encryption is completed it appends the .qweuirtksd extension in every encrypted file. Following data encryption, it releases a file named “!!! ReadMeToDecrypt.txt” which contains the following ransom note:
“Attention, all your files are encrypted with the AES cbc-128 algorithm!
It’s not a virus like WannaCry and others, I hacked your computer,
The encryption key and bitcoin wallet are unique to your computer,
so you are guaranteed to be able to return your files.
But before you pay, you can make sure that I can really decrypt any of your files.
To do this, send me several encrypted files to [email protected], a maximum of 5 megabytes each, I will decrypt them
and I will send you back. No more than 5 files. Do not forget to send in the letter bitcoin address 1Ne5yGtfycobLgXZn5WSN5jmGbVRyTUf48 from this file.
After that, pay the decryption in the amount of 500$ to the bitcoin address: 1Ne5yGtfycobLgXZn5WSN5jmGbVRyTUf48
After payment, send me a letter to
[email protected] with payment notification.
Once payment is confirmed, I will send you a decryption program.
You can pay bitcoins online in many ways:
https://buy.blockexplorer.com/ – payment by bank card
If you have any questions, write to me at
As a bonus, I will tell you how hacked your computer is and how to protect it in the future.”
How does Qweuirtksd ransomware spread online?
Qweuirtksd ransomware may spread using several tactics. For one, it may use malicious spam email campaigns which contain infected attachment. Aside from that, it could also break through unprotected RDP configuration and install Qweuirtksd ransomware directly in the system. In addition, crooks could also spread this crypto-malware using fraudulent downloads, exploit kits, fake software and fake software updates. This is why you need to keep both your system and antivirus programs updated in order to keep your computer safe from this kind of cyber threat.
Obliterate Qweuirtksd ransomware with the help of the removal instructions prepared below.
Step 1: Tap Ctrl + Shift + Esc keys to launch the Task Manager.
Step 2: Go to Processes and look for the malicious process of Qweuirtksd ransomware which may be randomly named and usually takes up a lot of CPU resources. Once you’ve found it, right click on it and select End Process or End Task.
Step 3: Close the Task Manager and open Control Panel by pressing the Windows key + R, then type in appwiz.cpl and then click OK or press Enter.
Step 4: Look for dubious programs that might by related to Qweuirtksd ransomware and then uninstall it/them.
Step 5: Tap Win + E to launch File Explorer.
Step 6: After opening File Explorer, navigate to the following directories below and look for Qweuirtksd ransomware’s malicious components such as “!!! ReadMeToDecrypt.txt”, <random >.exe and other suspicious-looking files and then remove them all.
Step 7: Close the File Explorer.
Before you proceed to the next steps below, make sure that you are tech savvy enough to the point where you know exactly how to use and navigate your computer’s Registry. Keep in mind that any changes you make will highly impact your computer. To save you the trouble and time, you can just use [product-name], this system tool is proven to be safe and excellent enough that hackers won’t be able to hack into it. But if you can manage Windows Registry well, then by all means go on to the next steps.
Step 8: Tap Win + R to open Run and then type in regedit in the field and tap enter to pull up Windows Registry.
Step 9: Navigate to the listed paths below and look for the registry keys and sub-keys created by Qweuirtksd ransomware.
- HKEY_CURRENT_USER\Control Panel\Desktop\
- HKEY_USERS\.DEFAULT\Control Panel\Desktop\
Step 10: Delete the registry keys and sub-keys created by Qweuirtksd ransomware.
Step 11: Close the Registry Editor.
Step 12: Empty your Recycle Bin.
Try to recover your encrypted files using the Shadow Volume copies
Restoring your encrypted files using Windows’ Previous Versions feature will only be effective if Qweuirtksd ransomware hasn’t deleted the shadow copies of your files. But still, this is one of the best and free methods there is, so it’s definitely worth a shot.
To restore the encrypted file, right-click on it and select Properties, a new window will pop-up, then proceed to Previous Versions. It will load the file’s previous version before it was modified. After it loads, select any of the previous versions displayed on the list like the one in the illustration below. And then click the Restore button.
Once you’re done executing the steps given above, you need to continue the removal process of Qweuirtksd ransomware using a reliable program like [product-name]. How? Follow the advanced removal steps below.
Perform a full system scan using [product-code]. To do so, follow these steps:
- Turn on your computer. If it’s already on, you have to reboot it.
- After that, the BIOS screen will be displayed, but if Windows pops up instead, reboot your computer and try again. Once you’re on the BIOS screen, repeat pressing F8, by doing so the Advanced Option shows up.
- To navigate the Advanced Option use the arrow keys and select Safe Mode with Networking then hit
- Windows will now load the Safe Mode with Networking.
- Press and hold both R key and Windows key.
- If done correctly, the Windows Run Box will show up.
- Type in the URL address, [product-url] in the Run dialog box and then tap Enter or click OK.
- After that, it will download the program. Wait for the download to finish and then open the launcher to install the program.
- Once the installation process is completed, run [product-code] to perform a full system scan.
- After the scan is completed click the “Fix, Clean & Optimize Now” button.