|Short Description||Encrypts important user data and demands ransom in return.|
|Symptoms||The user may have his files encrypted without his consent and may see a ransom note with instructions on how to pay for them.|
|Distribution Method||Malicious Links Spam Mail|
|Detection Tool||Download Malware Removal Tool, to See If Your System Has Been Affected by malware|
|User Experience||Join our forum to follow the discussion about the Trojan.Ransomcrypt Variants.|
A variant of the Trojan.Ransomcrypt ransomware infection, this partucular trojan is famous for encrypting a wide array of file extensions and leaving a ransom note. This ransom note aims to scare users into paying the ransom via anonymous networks in return for the decryption keys, treatening the files may be lost forever. Experts advise users not to comply in any way with the demands of the cyber croooks because it is no guarantee in any way that the files will be decrypted.
Trojan.Ransomcrypt.S – How Did I Get Infected?
Such types of trojans may be downloaded on your computer via other malicious programs such as trojan.downloaders that may have already infected it. Another way to get them is by either visiting a malicious site that downloads the threat directly onto the user PC or by opening a dangerous spam mail attachment. Users are strongly advised to use spam filters since some emails may also be spoofed and they could think they are from a well known person or a company and fall into the trap.
Trojan.Ransomcrypt.S In Detail
According to Symantec, the .S variant of this trojan is also encrypts certain files on the user PC and leaves a ransom note. Once it has been activated on a target PC, it makes a copy of a malicious .dll file, called reg.dll in the %Temp% folder. After doing so, the Trojan begins tampering with PC settings, creating the following registry object for the copied .dll file:
→HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\”WINUP” = “regsvr32 “%Temp%\reg.dll”
This registry entry aims to make the trojan run every time on system startup. The next step after that is for the trojan to connect to the attackers’ domain. One malicious domain identified by the Symantec threat analysis experts was:
After connecting to remote domain, the cyber threat then downloads these files onto the infected PC’s %Temp% folder:
t0.da0; t0.daa; t0.da1
After downloading the files it most likely uses them to encrypt user files of these formats:
→.txt .html .htm .css .wmv .wallt .odt .ods .odp .odm .odc .odb .doc .docx .docm .wps .xls .xlsx .xlsm .xlsb .xlk .ppt .pptx .pptm .mdb .accdb .pst .dwg .dxf .dxg .wpd .rtf .wb2 .mdf .dbf .psd .pdd .pdf .eps .ai .indd .cdr .jpg .jpe .jpg .dng .3fr .arw .srf .sr2 .bay .crw .cr2 .dcr .kdc .erf .mef .mrw .nef .nrw .orf .raf .raw .rwl .rw2 .r3d .ptx .pef .srw .x3f .der .cer .crt .pem .pfx .p12 .p7b .p7c
Just like CryptoWall Ransomware, the trojan then creates the HELP_DECRYPT.HTML(HL https://sensorstechforum.com/help_decrypt-files-description-and-removal/) file that contains the same instructions such as the CyptoWall(HL https://sensorstechforum.com/remove-cryptowall-3-0-and-restore-the-encrypted-files/) ones.
Remove Trojan.Ransomcrypt.S Fully from Your PC
In order to remove the .S variant of this Trojan from your computer you should guide yourself by the step-by-step instructions below. It is recommended to boot in safe mode and scan your computer with advanced anti-malware tool. Also, for tech-savvy users and for a way to try and decrypt your data check these links:
Methods for decryption:
Scan and remove ransomware via a live OS:
Preparation before removing Trojan.Ransomcrypt.S.
Before starting the actual removal process, we recommend that you do the following preparation steps.
- Make sure you have these instructions always open and in front of your eyes.
- Do a backup of all of your files, even if they could be damaged. You should back up your data with a cloud backup solution and insure your files against any type of loss, even from the most severe threats.
- Be patient as this could take a while.
Step 1: Boot Your PC In Safe Mode to isolate and remove Trojan.Ransomcrypt.S
Step 2: Clean any registries, created by Trojan.Ransomcrypt.S on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by Trojan.Ransomcrypt.S there. This can happen by following the steps underneath:
Step 3: Find virus files created by Trojan.Ransomcrypt.S on your PC.
For Newer Windows Operating Systems
1: On your keyboard press + R and write explorer.exe in the Run text box and then click on the Ok button.
2: Click on your PC from the quick access bar. This is usually an icon with a monitor and its name is either “My Computer”, “My PC” or “This PC” or whatever you have named it.
3: Navigate to the search box in the top-right of your PC's screen and type “fileextension:” and after which type the file extension. If you are looking for malicious executables, an example may be "fileextension:exe". After doing that, leave a space and type the file name you believe the malware has created. Here is how it may appear if your file has been found:
N.B. We recommend to wait for the green loading bar in the navigation box to fill up in case the PC is looking for the file and hasn't found it yet.
For Older Windows Operating Systems
In older Windows OS's the conventional approach should be the effective one:
1: Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.
2: After the search window appears, choose More Advanced Options from the search assistant box. Another way is by clicking on All Files and Folders.
3: After that type the name of the file you are looking for and click on the Search button. This might take some time after which results will appear. If you have found the malicious file, you may copy or open its location by right-clicking on it.
Now you should be able to discover any file on Windows as long as it is on your hard drive and is not concealed via special software.
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.
Step 4: Scan for Trojan.Ransomcrypt.S with SpyHunter Anti-Malware Tool
What Does Trojan.Ransomcrypt.S Trojan Do?
The Trojan.Ransomcrypt.S Trojan is a malicious computer program designed to disrupt, damage, or gain unauthorized access to a computer system. It can be used to steal sensitive data, gain control over a system, or launch other malicious activities.
What Damage Can Trojan.Ransomcrypt.S Trojan Cause?
The Trojan.Ransomcrypt.S Trojan is a malicious type of malware that can cause significant damage to computers, networks and data. It can be used to steal information, take control of systems, and spread other malicious viruses and malware.
Is Trojan.Ransomcrypt.S Trojan a Harmful Virus?
Yes, it is. A Trojan is a type of malicious software that is used to gain unauthorized access to a person's device or system. It can damage files, delete data, and even steal confidential information.
Can Trojans, Like Trojan.Ransomcrypt.S Steal Passwords?
Yes, Trojans, like Trojan.Ransomcrypt.S, can steal passwords. These malicious programs are designed to gain access to a user's computer, spy on victims and steal sensitive information such as banking details and passwords.
Can Trojan.Ransomcrypt.S Trojan Hide Itself?
Yes, it can. A Trojan can use various techniques to mask itself, including rootkits, encryption, and obfuscation, to hide from security scanners and evade detection.R
Can a Trojan Virus be Removed by Factory Reset?
Yes, a Trojan Virus can be removed by factory resetting your device. This is because it will restore the device to its original state, eliminating any malicious software that may have been installed.
Can Trojan.Ransomcrypt.S Trojan Infect WiFi?
Yes, it is possible for a Trojan to infect WiFi networks. When a user connects to the infected network, the Trojan can spread to other connected devices and can access sensitive information on the network.
Can Trojans Be Deleted?
Yes, Trojans can be deleted. This is typically done by running a powerful anti-virus or anti-malware program that is designed to detect and remove malicious files. In some cases, manual deletion of the Trojan may also be necessary.
Are Trojans Hard to Remove?
Yes, Trojans can be very hard to remove as they often disguise themselves as legitimate programs, making them difficult to detect and extremely tricky to remove.
Can Trojans Steal Files?
Yes, Trojans can steal files if they are installed on a computer. This is done by allowing the malware author or user to gain access to the computer and then steal the files stored on it.
Which Anti-Malware Can Remove Trojans?
Anti-malware programs such as SpyHunter are capable of scanning for and removing Trojans from your computer. It is important to keep your anti-malware up to date and regularly scan your system for any malicious software.
Can Trojans Infect USB?
Yes, Trojans can infect USB devices. USB Trojans typically spread through malicious files downloaded from the internet or shared via email, allowing the hacker to gain access to a user's confidential data.
About the Trojan.Ransomcrypt.S Research
The content we publish on SensorsTechForum.com, this Trojan.Ransomcrypt.S how-to removal guide included, is the outcome of extensive research, hard work and our team’s devotion to help you remove the specific trojan problem.
How did we conduct the research on Trojan.Ransomcrypt.S?
Please note that our research is based on an independent investigation. We are in contact with independent security researchers, thanks to which we receive daily updates on the latest malware definitions, including the various types of trojans (backdoor, downloader, infostealer, ransom, etc.)
Furthermore, the research behind the Trojan.Ransomcrypt.S threat is backed with VirusTotal.
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