Remove KUUB Ransomware Virus (2019 Guide)

Kuub ransomware victims can’t open files anymore

Kuub ransomware is a malicious computer virus that encodes personal files and seeks to extort victims. It is the v0168 version from STOP/DJVU malware group. Once it makes a file inaccessible, it also ads .kuub file extension to it. Following that, the virus leaves a ransom note ( _readme.txt) to instruct the victim on how to pay a ransom in exchange for data decryption software. They provide two emails – [email protected] and [email protected] so that the victims could contact them.

This ransomware variant emerged after NESA and BOOT, but before RECO ransomware version. These are the latest and updated crypto-malware versions that cannot be decrypted that simply because they use a proper combination of AES/RSA crypto-algorithms to corrupt data on the computer. Once encoded, the data can be restored only using the private key owned by the attackers.

During the encryption process, .Kuub file extension virus communicates with its Command&Control server, which serves it the ONLINE key. In case the virus cannot reach the C&C server, the files will be encrypted using an OFFLINE key, which gives hope for possible data recovery options (more on that in the main article about DJVU malware).

Currently there is no Kuub decryption software available. However, please stay patient – security experts might come up with one soon. For now, you can only restore your files using data backups.

The ransom note left by the criminals contains demands regarding the ransom payment. According to the cybercriminals, they can provide victims with KUUB decryption software if the victim pays the specified amount of money in Bitcoins. They ask for $490 if the victim pays within 72 hours from the infection moment; $980 for all the ones who decide to pay later.

A full ransom note is provided below.

ATTENTION!

Don’t worry, you can return all your files!
All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can get and look video overview decrypt tool:
[removed link]
Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that’s price for you is $490.
Please note that you’ll never restore your data without payment.
Check your e-mail “Spam” or “Junk” folder if you don’t get answer more than 6 hours.

To get this software you need write on our e-mail:
[email protected]

Reserve e-mail address to contact us:
[email protected]

Your personal ID:
983mhflGeRsMTHVpwfk4tlm4RWx1y69zcacA5hSp3l60BnYwdtr

Message from KUUB ransomware developers

It is unknown whether the attackers provide the decryption software after receiving the payment, so we do not recommend paying the ransom under any circumstances.

It is impossible to recover files from Volume Shadow Copies because the malware executes these commands to destroy them and any other means of data restoration:

sc stop VVS
sc stop wscsvc
sc stop WinDefend
sc stop wuauserv
sc stop BITS
sc stop ERSvc
sc stop WerSvc
cmd.exe /C bcdedit /set {default} recoveryenabled No
cmd.exe /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
C:\Windows\System32\cmd.exe” /C vssadmin.exe Delete Shadows /All /Quiet

If you have fallen victim to this cyberthreat, you must remove KUUB ransomware virus instantly. Security experts inform that it spreads together with Azorult Trojan which steals private data such as passwords and possibly can empty your bank account quickly. To delete the malware, we recommend using a robust anti-virus solution.

Threat Summary

Name	KUUB Ransomware Virus
Type	Ransomware (STOP/DJVU family)
Ransom note	_readme.txt, _openme.txt
Ransom demand	$490 or $980
Encryption	AES/RSA combination
Decryption	No tools available
Distribution	Malicious spam, illegal software cracks, keygens
Removal	Remove using antivirus software

Distribution tricks

Kuub virus managed to infect thousands of users worldwide using standard ransomware proliferation tactics. It employs malicious spam and malicious bundling techniques to reach its potential victims on a daily basis. Victims have reported receiving the malicious payload along with software cracks, keygens, and other officially illegal files.

You must pay attention to the fact that criminals will use such free goods as bait to serve malware to you. Additionally, they tend to exploit victims’ curiosity by packing the malware into malicious spam attachments or links.

If you wish to avoid being hit by ransomware from STOP/DJVU family, PHOBOS, OmniSphere or any other, we strongly recommend reading these ransomware prevention guidelines.

KUUB ransomware removal guidelines

To remove Kuub ransomware virus, you must use a trustworthy antivirus software. Do not settle with suspicious so-called malware removers – only choose the one with great reviews. There are good paid and free alternatives on the market.

You can also use self-help guide provided below for manual KUUB ransomware removal. However, you should still run a system scan afterwards to check whether all malware remains were wiped out.