LOCKUSSSS Virus Files of Ransomware — How to remove virus?

The Lockussss virus belongs to the MedusaLocker ransomware family. This ransomware encrypts all user’s data on the PC (photos, documents, excel tables, music, videos, etc), adds its specific extension to every file, and creates the Recovery_Instructions.html files in every folder which contains encrypted files.

Lockussss Virus

☝️ Lockussss can be correctly identify as a MedusaLocker ransomware infection.

Lockussss adds its specific “.lockussss” extension to the name of every file. For example, your photo named as “my_photo.jpeg” will be transformed into “my_photo.jpeg.lockussss“, report in Excel tables named “report.xlsx” – to “report.xlsx.lockussss“, and so on.

Recovery_Instructions.html file, which can be found in every folder that contains the encrypted files, is a ransom money note. Inside of it, you can find information about ways of contacting Lockussss ransomware developers, and some other info. Inside of the ransom note, there is usually an instruction saying about purchasing the decryption tool. This decryption tool is created by ransomware developers.

Here is a summary for the Lockussss:

The image below gives a clear vision of how the files with “.lockussss” extension look like:

Example of encrypted .lockussss files

How did I get Lockussss ransomware on my computer?

That was a huge number of different ways of ransomware injection.

However, nowadays there are only two ways of Lockussss injection – email spam and trojans. You may see a lot of messages on your email, stating that you need to pay different bills or to get your parcel from the local FedEx department. But all such messages are sent from unknown email addresses, not from familiar official emails of these companies. All such letters contain the attached file, which is used as a ransomware carrier. If you open this file – your system will get infected by Lockussss.

In case of trojans presence, you will be offered to download and install ransomware on your PC under the guise of something legit, like a Chrome update, or update for the software you are storing on your computer. Sometimes, trojan viruses can be masked as legit programs, and ransomware will be offered for download as an important update, or a big pack of extensions that are essential for proper program functioning.

There is also the third way of ransomware injection, however, it becomes less and less popular day-to-day. I am talking about peering networks, such as torrents or eMule. No one can control which files are packed in the seeding, so you can discover a huge pack of different malware after downloading. If circumstances force you to download something from peering networks – scan every downloaded folder or archive with antivirus software.

How does LOCKUSSSS work?

When the LOCKUSSSS ransomware is mounted to your PC, it will do different startup routines to prepare your computer for encryption

Step 1

LOCKUSSSS will create the Registry value EnableLinkedConnections under the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System registry key and also established it to 1. This is done to make certain mapped drives come also in a UAC launched process.

Step 2

Next, ransomware will restart the LanmanWorkstation service in order to make certain that Windows networking is running which mapped network drives come.

Step 3

MedusaLocker will seek as well as end the complying with procedures in order to shut down security programs and to make certain all data files are closed and easily accessible for encrypting:

wrapper, DefWatch, ccEvtMgr, ccSetMgr, SavRoam, sqlservr, sqlagent, sqladhlp, 
Culserver, RTVscan, sqlbrowser, SQLADHLP, QBIDPService, Intuit.QuickBooks.FCS, 
QBCFMonitorService, sqlwriter, msmdsrv, tomcat6, zhudongfangyu, SQLADHLP, 
vmware-usbarbitator64, vmware-converter, dbsrv12, dbeng8, wxServer.exe, 
wxServerView, sqlservr.exe, sqlmangr.exe, RAgui.exe, supervise.exe, Culture.exe, 
RTVscan.exe, Defwatch.exe, sqlbrowser.exe, winword.exe, QBW32.exe, QBDBMgr.exe, 
qbupdate.exe, QBCFMonitorService.exe, axlbridge.exe, QBIDPService.exe, httpd.exe, 
fdlauncher.exe, MsDtSrvr.exe, tomcat6.exe, java.exe, 360se.exe, 360doctor.exe, 
wdswfsafe.exe, fdlauncher.exe, fdhost.exe, GDscan.exe, ZhuDongFangYu.exe

Step 4

Finally, it gets rid of the Shadow Volume Copies to ensure that they can not be made use of to bring back files, gets rid of back-ups made with Windows back-up, and also disables the Windows automatic start-up repair work making use of the complying with commands:

vssadmin.exe Delete Shadows /All /Quiet
wmic.exe SHADOWCOPY /nointeractive
bcdedit.exe /set {default} recoveryenabled No
bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
wbadmin DELETE SYSTEMSTATEBACKUP
wbadmin DELETE SYSTEMSTATEBACKUP -deleteOldest

Step 5

MedusaLocker will currently begin to scan the computer’s drives for files to encrypt. When encrypting documents, it will miss all data that have the extensions .exe, .dll, .sys, .ini, .lnk (or other expansion utilized for encrypted files) in addition to data in the adhering to folders.

USERPROFILE
PROGRAMFILES(x86)
ProgramData
\AppData
WINDIR
\Application Data
\Program Files
\Users\All Users
\Windows
\intel
\nvidia

When encrypting documents, it will use AES file encryption to encrypt the data and afterward the AES key will be encrypted by an RSA-2048 public key consisted of in the virus executable.

How to remove Lockussss virus?

In addition to encode a victim’s files, the Lockussss infection has also started to install the Azorult Spyware on system to steal account credentials, cryptocurrency wallets, desktop files, and more.

To ensure the user that ransomware distributors really have the decryption tool, they may offer to decrypt several encrypted files. And they are the single owners of this decryption program: Lockussss ransomware is a completely new type, so there is no legit program from anti-malware vendors, which can decrypt your files. But such a situation is in momentum: decryption tools are updating every month.

However, paying the ransom is a bad decision, too. There is no guarantee that Lockussss ransomware developers will send you the decryption tool and a proper decryption key. And there are a lot of cases when ransomware distributors deceived their victims, sending the wrong key or even nothing. In the majority of cases, there is a way to recover your files for free. Search for available backups, and restore your system using it. Of course, there is a chance that the backup you found is too old, and does not contain a lot of files you need. But, at least you will be sure that there is no malware in your system. However, to ensure that there are no malicious programs in your system after the backup, you need to scan your PC with anti-malware software.

Lockussss ransomware is not unique. There are more ransomware of this type: No_hacker, Rdp, Nusm. These examples of ransomware act in a similar way: encrypting your files, adding a specific extension, and leaving a great number of ransom money notes in every folder. But there are two things that make difference between this ransomware – the cryptography algorithm, which is used for file encryption, and ransom amount . In some cases, victims are able to decrypt their files without any payments, just using free solutions produced by several anti-malware vendors, or even with the decryption tool which is offered by ransomware creators. The last scenario is possible when ransomware distributors have typed your decryption key inside of a ransom money note. However, as you can already guess, such luck is a very rare thing. Ransomware is created for money gaining, not for jokes or scaring.

Reasons why I would recommend GridinSoft²

Download Removal Tool.

Run the setup file.

Press “Install” button.

Once installed, Anti-Malware will automatically run.

Wait for the Anti-Malware scan to complete.

Click on “Clean Now”.

Frequently Asked Questions

How сan I avoid ransomware attack?

Lockussss ransomware doesn’t have a superpower.

You can easily protect yourself from its injection in several easy steps :

• Ignore all emails from unknown mailboxes with a strange unknown address, or with content that has likely no connection to something you are waiting for (can you win in a lottery without taking part in it?). If the email subject is likely something you are waiting for, check carefully all elements of the suspicious letter. A fake email will surely contain a mistake.
• Do not use cracked or untrusted programs. Trojans are often distributed as a part of cracked software, possibly under the guise of “patch” which prevents the license check. But untrusted programs are very hard to distinguish from trustworthy software, because trojans may also have the functionality you need. You can try to find information about this program on the anti-malware forums, but the best solution is not to use such programs.

1. My files are encrypted by ransomware, what should I do now?