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Stroman ransomware virus. How to remove? (Uninstall guide)

removal by Jake Doevan - - | Type: Ransomware

Stroman ransomware – malicious program that poses a serious danger to your files

Image of Stroman ransomware virus

Stroman ransomware is a malicious cyber infection that takes users' files a hostage and requires a special amount of money in exchange for a special decryption tool. Malware uses a sophisticated encryption algorithm, so you can unlock your files only if you have their backups.

Right after the encryption, Stroman adds one of these file extensions and drops readinfo.txt or info.txt  file to inform users how can they recover their files:

  • .stroman
  • .protos
  • .fat32
  • .gigahertz 

According to the ransom note provided by Stroman ransomware, victims have to pay $500 in 72 hours; otherwise, the size of ransom will increase.Victims have to contact criminals and make sure that they have an actually working decryptor. Attackers offer to decrypt 1-2 files that are not bigger than 10 Mb for free.

Authors of the Stroman ransomware claim that they will provide decryption software, key, and user instructions as soon as they will receive the payment. However, researchers from Los Virus[1] warn that this deal might end up with money loss or blackmailing.[2] Thus, you should put data recovery to the second plan and focus on virus removal.

This crypto-malware is still under investigation. However, the recent data does not give much promising news about possibilities to recover files for free. However, there’s still a chance that third-party tools might help. Possibility to restore data might increase if Stroman does not delete Shadow Volume Copies of the targeted files.

After ransomware attack, we highly recommend scanning the system with Reimage or another powerful anti-malware in order to remove Stroman ransomware entirely. However, ransomware might be design to block installation or access to security tools. Thus, in this case, you should follow the instructions below and disable the virus first.

Keep in mind that manual Stroman ransomware removal is not recommended. It’s a complex malicious program that may have affected numerous legit system processes and installed malevolent files that look like safe files. Thus, you might leave dangerous entries or even delete crucial system files. Security tools help to avoid such mistakes.

Stroman ransomware keeps changing extensions

Protos ransomware is one Stroman's versions that drops readinfo.txt to inform its victims about the current situation. It lets its victim know that his or hers files were encrypted and that they only way to recover them is to buy a special decryption key. Typically, it costs around $1000 and should be bought in bitcoin or similar crypto-currency. However, scammers tend to swindle users' money, so make sure you use alternative data recovery methods.

Fat32 ransomware is another version which was named like that according to the file extension used to mark affected files. This variant uses info.txt warning message which seeks to convince the user into paying $700 for a special decryptor. You can get infected with this threat after downloading a malicious email attachment to your computer, so make sure you ignore email messages from unknown senders. It is always better to contact the sender and making sure that it is real before downloading an unknown file.

Gigahertz ransomware virus showed up in the very beginning of 2018. This ransomware requires the same $700 in a form of ransom and uses BM-2cSs3qfF5wo1x6EQbsXJX3nwkzJwYx9R98@bitmessage.ch email address to keep in touch with its victims. Unfortunately, there is no guarantee that dealing with hackers will help you get your files back to you.

The ransom warning of Gigahertz Stroman ransomware and other its versions looks like that:

Your data set are encrypted.
We can help decrypt your files.
Price for full decrypt of all files is $700
You will get decrypt key + personal + manual.
To recover your files – contact us by email:
BM-2cSs3qfF5wo1x6EQbsXJX3nwkzJwYx9R98@bitmessage.ch
Please use the public email for contact: gmail, etc.
To be sure that we can decrypt your files
You can send us 1-2 encrypted files and we will send them back for FREE.
For download files use only dropmefiles.com, no more than 10 Mb
or Send us an email:
1. Personal ID
2. link dropmefiles.com
After you get decrypted files, wait for further instructions.
*****
Using false decryption key will cause a permanent data loss
You can send a message within 72 hours, or the price will be increased

Malware developers use multiple methods to launch cyber attacks

Stroman, as well as other file-encrypting viruses, spread using several strategies. The variety of used attacks allows infiltrating more devices and broaden the scale of the attack. However, the majority of ransomware is being spread using the same methods, such as:

  • malicious spam emails with infected attachments;
  • malware-laden ads;
  • exploit kits;
  • unprotected RDP connections;
  • fake downloads;
  • bogus software installers.

Malware payload might be dropped and immediately executed on the system when users open safely looking Word or PDF document. Thus, it's recommended not to open spam emails and attachments sent from unknown people.

Users should also be careful with installation of free programs and their updates. Avoiding file-sharing websites and using legit publishers’ sites is crucial to avoid accidental installation of a malicious app.

Additionally, keep all the programs updated and add another layer of security by installing an antivirus program.[3]

Terminate Stroman and try to restore files without paying for cybercriminals

Stroman removal must be completed using reputable malware removal tool because of ransomware’s operation features and ability to make system modifications. We recommend using Reimage or Malwarebytes Anti Malware, but you can choose your preferred tools as well.

If you cannot download, install or run security software, please reboot your PC to the Safe Mode with Networking as shown in the instructions below. Then you will be able to run automatic malware elimination.

Once you remove Stroman, you can use data backups and replace corrupted files with working ones. However, if you do not have them, you can find alternative methods and tools that MIGHT help to restore damaged data below.

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What to do if failed?
If you failed to remove infection using Reimage, submit a question to our support team and provide as much details as possible.
Reimage is recommended to uninstall Stroman ransomware virus. Free scanner allows you to check whether your PC is infected or not. If you need to remove malware, you have to purchase the licensed version of Reimage malware removal tool.
More information about this program can be found in Reimage review.
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Manual Stroman virus Removal Guide:

Remove Stroman using Safe Mode with Networking

If Stroman prevents from running security tools, follow these steps to disable it:

  • Step 1: Reboot your computer to Safe Mode with Networking

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Safe Mode with Networking from the list Select 'Safe Mode with Networking'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Networking in Startup Settings window. Select 'Enable Safe Mode with Networking'
  • Step 2: Remove Stroman

    Log in to your infected account and start the browser. Download Reimage or other legitimate anti-spyware program. Update it before a full system scan and remove malicious files that belong to your ransomware and complete Stroman removal.

If your ransomware is blocking Safe Mode with Networking, try further method.

Remove Stroman using System Restore

These instructions might also help to eliminate this malicious program:

  • Step 1: Reboot your computer to Safe Mode with Command Prompt

    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Stroman. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with Reimage and make sure that Stroman removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Stroman from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

Currently, data backups are what can help you after the ransomware attack. Though, if you do not have them, please try alternative recovery methods that MIGHT help to get back access to some of the data until the release of the official decryptor:

If your files are encrypted by Stroman, you can use several methods to restore them:

Data Recovery Pro helps to restore corrupted files

This tool might be helpful after the ransomware attack because it is designed to restore corrupted or accidentally deleted files.

Windows Previous versions feature might help to restore previously saved versions of important data

Follow these steps and copy previously saved versions of encrypted files if System Restore feature has been enabled before the Stroman ransomware attack.

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

Try ShadowExplorer

If Shadow Volume Copies were not deleted by malware, this tool might be helpful as well.

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

The official Stroman decryptor is not available yet.

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Stroman and other ransomwares, use a reputable anti-spyware, such as Reimage, Plumbytes Anti-MalwareWebroot SecureAnywhere AntiVirus or Malwarebytes Anti Malware

About the author

Jake Doevan
Jake Doevan - Computer technology expert

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