Remove Strictor (BankAccountSummary) Ransomware and Restore .locked Files

The “hidden tear” project has brought yet another ransomware. It is named Strictor and it is also known as BankAccountSummary ransomware which wants 500$ from infected users to get the files encrypted by it back at their disposal. The ransomware locks the data using a very strong AES-256 cipher which would take years and years to crack unless a flaw in its code has been found. Experts advise infected users to not pay the 500$ ransom amount in most circumstances because their files may not be decrypted and they help the cyber-criminals develop and spread the virus. Instead, it is recommended to remove the ransomware and try and restore the data using alternative methods such as the ones below while waiting for a decryption method to be released.

Threat Summary

Name	Strictor
Type	Remote Access Trojan with file encryption capability.
Short Description	The ransomware encrypts files with a strong AES-256 cipher asking 500$ for decryption.
Symptoms	Files are encrypted with the.locked file extension and become inaccessible. A ransom note with instructions for paying the ransom may show as a wallpaper.
Distribution Method	Spam Emails, Email Attachments, File Sharing Networks.
Detection Tool	See If Your System Has Been Affected by Strictor Download Malware Removal Tool
User Experience	Join our forum to Discuss Locky Ransomware.
Data Recovery Tool	Windows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

Strictor Ransomware – Distribution

To be successfully deployed across computers, the creators of Strictor may have used spam messages that could feature either malicious e-mail attachments or malicious URLs such as the example below:

But, they have also though out this bottleneck very well, realizing it is the most important part of the infection process. This is why they may have used file obfuscators to hide the malicious payload carrying file from Anti-Virus and Anti-Malware programs.

Researchers have also reported that a malicious executable file pretending to be a .PDF document has been reported to be widespread via spam messages carrying Strictor. The file has the following name:

• Bank_Account_Summary.pdf.exe

Strictor Ransomware In Detail

After being activated on your computer, Strictor may create malicious files in the following Windows folders:

After creating the files, researchers at http://id-ransomware.blogspot.bg have reported that the ransomware creates the following registry entries:

→ In the key:
HKLM\SOFTWARE\Microsoft\Tracing\Bank_Account_Summary_RASAPI32\
The following subkeys:
ConsoleTracingMask
EnableConsoleTracing
EnableFileTracing
FileDirectory
FileTracingMask
MaxFileSize
In the key:
HKLM\SOFTWARE\Microsoft\Tracing\Bank_Account_Summary_RASMANCS\
The following subkeys:
ConsoleTracingMask
EnableConsoleTracing
EnableFileTracing
FileDirectory
FileTracingMask
MaxFileSize

After changing the settings of the user, the ransomware may also connect to its command and control server:

→ 202.181.194.227

After connecting to the server, the ransomware may send different information from the infected computer:

• Decryption Key.
• System Information.
• Anti-Virus Information.

The ransomware also uses an AES-256 cypher to encrypt most usable files without damaging Windows:

→ “PNG .PSD .PSPIMAGE .TGA .THM .TIF .TIFF .YUV .AI .EPS .PS .SVG .INDD .PCT .PDF .XLR .XLS .XLSX .ACCDB .DB .DBF .MDB .PDB .SQL .APK .APP .BAT .CGI .COM .EXE .GADGET .JAR .PIF .WSF .DEM .GAM .NES .ROM .SAV CAD Files .DWG .DXF GIS Files .GPX .KML .KMZ .ASP .ASPX .CER .CFM .CSR .CSS .HTM .HTML .JS .JSP .PHP .RSS .XHTML. DOC .DOCX .LOG .MSG .ODT .PAGES .RTF .TEX .TXT .WPD .WPS .CSV .DAT .GED .KEY .KEYCHAIN .PPS .PPT .PPTX ..INI .PRF Encoded Files .HQX .MIM .UUE .7Z .CBR .DEB .GZ .PKG .RAR .RPM .SITX .TAR.GZ .ZIP .ZIPX .BIN .CUE .DMG .ISO .MDF .TOAST .VCD SDF .TAR .TAX2014 .TAX2015 .VCF .XML Audio Files .AIF .IFF .M3U .M4A .MID .MP3 .MPA .WAV .WMA Video Files .3G2 .3GP .ASF .AVI .FLV .M4V .MOV .MP4 .MPG .RM .SRT .SWF .VOB .WMV 3D .3DM .3DS .MAX .OBJ R.BMP .DDS .GIF .JPG ..CRX .PLUGIN .FNT .FON .OTF .TTF .CAB .CPL .CUR .DESKTHEMEPACK .DLL .DMP .DRV .ICNS .ICO .LNK .SYS .CFG”Source:fileinfo.com

The encrypted files by Strictor contain the .locked file extension, for example:

→ Picture.jpg.locked

After encryption, the ransomware virus is reported to create the following file:

→ C:\Users\Name\Documents\WindowsUpdate.locked

The ransomware virus may also delete the shadow volume copies of the infected users by

In addition to that, Strictor Ransomware has preventive measures, when the user stops the connection to the internet. The ransomware displays the following message if there is no active connection:

→ “Are you trying to fool me? Connect me to the Internet ;)”

In addition to that, it leaves a ransom note, by changing the wallpaper of the infected computer to the following picture:

The ransomware may also add a text file, containing the following ransom message:

→ “All your precious Files on your computer
I have successfully encrypted!
Your files are encrypted To get the key to decrypt flies you have to pay 500 USD.
If payment is not made before {Deadline date here} the cost of decrypting files will increase 2 times and will be 1000 USD
Click below to pay us the bitcoins!!!”

Strictor – Conclusion, Removal, and File Restoration

The corollary for Strictor ransomware is that it has been created to induce fear in users and drive them into paying the ransom money of 500 USD in time. The creators of this virus do not fool around, and they may have a lot of experience with ransomware infections because the malicious website connected to the ransomware contains the name “CryptoWall” in it. CryptoWall is one of the most notorious ransomware infections ever to be created, generating damages of over 180 million dollars globally for 2015.

To remove Strictor, we advise you to follow our instructions. They are organized in a methodological order to help you remove the ransomware. We advise you to also use an anti-malware tool to help you remove the malicious files because they may be different files in different locations under different names.

To decrypt your files. Unfortunately there is no current method released. However, we have prepared alternative file restoration methods which will help you restore at least some of your files. In the meantime, we will keep you posted in this article with updates if a decryptor has been released.

Manually delete Strictor from your computer

Note! Substantial notification about the Strictor threat: Manual removal of Strictor requires interference with system files and registries. Thus, it can cause damage to your PC. Even if your computer skills are not at a professional level, don’t worry. You can do the removal yourself just in 5 minutes, using a malware removal tool.

1. Boot Your PC In Safe Mode to isolate and remove Strictor files and objects

Boot Your PC Into Safe Mode

1. For Windows 7,XP and Vista. 2. For Windows 8, 8.1 and 10.

For Windows XP, Vista, 7 systems:

1. Remove all CDs and DVDs, and then Restart your PC from the “Start” menu.
2. Select one of the two options provided below:

– For PCs with a single operating system: Press “F8” repeatedly after the first boot screen shows up during the restart of your computer. In case the Windows logo appears on the screen, you have to repeat the same task again.

– For PCs with multiple operating systems: Тhe arrow keys will help you select the operating system you prefer to start in Safe Mode. Press “F8” just as described for a single operating system.

3. As the “Advanced Boot Options” screen appears, select the Safe Mode option you want using the arrow keys. As you make your selection, press “Enter“.

4. Log on to your computer using your administrator account

While your computer is in Safe Mode, the words “Safe Mode” will appear in all four corners of your screen.

Step 1: Open the Start Menu

Step 2: Whilst holding down Shift button, click on Power and then click on Restart.
Step 3: After reboot, the aftermentioned menu will appear. From there you should choose Troubleshoot.

Step 4: You will see the Troubleshoot menu. From this menu you can choose Advanced Options.

Step 5: After the Advanced Options menu appears, click on Startup Settings.

Step 6: Click on Restart.

Step 7: A menu will appear upon reboot. You should choose Safe Mode by pressing its corresponding number and the machine will restart.

2.Find malicious files created by Strictor on your PC

Find malicious files created by Strictor

1. For Windows 8, 8.1 and 10. 2. For Windows 7,XP and Vista.

For Newer Windows Operating Systems

Step 1:

On your keyboard press  + R and write explorer.exe in the Run text box and then click on the Ok button.

Step 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.

Step 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 navination 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:

Step 1:

Click on the Start Menu icon (usually on your bottom-left) and then choose the Search preference.

Step 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.

Step 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.

3.Fix registry entries created by Strictor on your PC

Fix registry entries created by Strictor on your PC.

Some malicious scripts may modify the registry entries of your computer to change different settings. This is why manual clean up of your Windows Registry Database is strongly recommended. Since the tutorial on how to do this is a bit lenghty, we recommend following our instructive article about fixing registry entries.

Automatically remove Strictor by downloading an advanced anti-malware program

1. Remove Strictor with SpyHunter Anti-Malware Tool

Remove Strictor with SpyHunter Anti-Malware Tool

1. Install SpyHunter to scan for and remove Strictor.2. Scan with SpyHunter to Detect and Remove Strictor.

Step 1:Click on the “Download” button to proceed to SpyHunter’s download page.

Download

Malware Removal Tool

It is highly recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter.

Step 2: Guide yourself by the download instructions provided for each browser.
Step 3: After you have installed SpyHunter, wait for it to automatically update.

Step1: After the update process has finished, click on the ‘Scan Computer Now’ button.

Step2: After SpyHunter has finished scanning your PC for any Strictor files, click on the ‘Fix Threats’ button to remove them automatically and permanently.

Step3: Once the intrusions on your PC have been removed, it is highly recommended to restart it.

2. Back up your data to secure it against infections and file encryption by Strictor in the future

Back up your data to secure it against attacks in the future

IMPORTANT! Before reading the Windows backup instructions, we highly recommend to back up your data automatically with cloud backup and insure it against any type of data loss on your device, even the most severe. We recommend reading more about and downloading SOS Online Backup .

SOS Online Backup

To back up your files via Windows and prevent any future intrusions, follow these instructions:

1. For Windows 7 and earlier 1. For Windows 8, 8.1 and 10 1. Enabling the Windows Defense Feature (Previous Versions)

1-Click on Windows Start Menu

2-Type Backup And Restore
3-Open it and click on Set Up Backup

4-A window will appear asking you where to set up backup. You should have a flash drive or an external hard drive. Mark it by clicking on it with your mouse then click on Next.

5-On the next window, the system will ask you what do you want to backup. Choose the ‘Let Me Choose’ option and then click on Next.

6-Click on ‘Save settings and run backup’ on the next window in order to protect your files from possible attacks by Strictor.

1-Press Windows button + R

2-In the window type ‘filehistory’ and press Enter

3-A File History window will appear. Click on ‘Configure file history settings’

4-The configuration menu for File History will appear. Click on ‘Turn On’. After its on, click on Select Drive in order to select the backup drive. It is recommended to choose an external HDD, SSD or a USB stick whose memory capacity is corresponding to the size of the files you want to backup.

5-Select the drive then click on ‘Ok’ in order to set up file backup and protect yourself from Strictor.

1- Press Windows button + R keys.

2- A run windows should appear. In it type ‘sysdm.cpl’ and then click on Run.

3- A System Properties windows should appear. In it choose System Protection.

5- Click on Turn on system protection and select the size on the hard disk you want to utilize for system protection.
6- Click on Ok and you should see an indication in Protection settings that the protection from Strictor is on.

Restoring a file via Windows Defense feature:
1-Right-click on the encrypted file, then choose Properties.

2-Click on the Previous Versions tab and then mark the last version of the file.

3-Click on Apply and Ok and the file encrypted by Strictor should be restored.

3. Restore files encrypted by Strictor

Restore Files Encrypted by Strictor

Security engineers strongly advise users NOT to pay the ransom money and attempt restoring the files using other methods. Here are several suggestions:

To restore your data, your first bet is to check again for shadow copies in Windows using this software:

Shadow Explorer

If this method does not work, Kaspersky have provided a decryptors for files encrypted with the this and other encryption algorithms:

Kaspersky Decryptors

Another method of restoring your files is by trying to bring back your files via data recovery software. Here are some examples of data recovery programs:

• Stellar Phoenix Data Recovery Technicians License(Pro version with more features)
• Stellar Phoenix Windows Data Recovery
• Stellar Phoenix Photo Recovery

There is also the technical option to use a network sniffer:

Another way to decrypt the files is by using a Network Sniffer to get the encryption key, while files are encrypted on your system. A Network Sniffer is a program and/or device monitoring data traveling over a network, such as its internet traffic and internet packets. If you have a sniffer set before the attack happened you might get information about the decryption key. For more information click on the following article.

Optional: Using Alternative Anti-Malware Tools

Remove Strictor Using Other Alternative Tools

STOPZilla Anti Malware

1. Download and Install STOPZilla Anti-malware to Scan for And Remove Strictor.
Step 1: Download STOPZilla by clicking here.
Step 2: A pop-up window will appear. Click on the ‘Save File’ button. If it does not, click on the Download button and save it afterwards.

Step 3: After you have downloaded the setup, simply open it.
Step 4: The installer should appear. Click on the ‘Next’ button.

Step 5: Check the ‘I accept the agreement’ check circle if not checked if you accept it and click the ‘Next’ button once again.

Step 6: Review and click on the ‘Install’ button.

Step 7: After the installation process has completed click on the ‘Finish’ button.

2. Scan your PC with STOPZilla Anti Malware to remove all Strictor associated files completely.
Step 1: Launch STOPZilla if you haven’t launched it after install.
Step 2: Wait for the software to automatically scan and then click on the ‘Repair Now’ button. If it does not scan automatically, click on the ‘Scan Now’ button.

Step 3: After the removal of all threats and associated objects, you should Restart your PC.

Vencislav Krustev

A network administrator and malware researcher at SensorsTechForum with passion for discovery of new shifts and innovations in cyber security. Strong believer in basic education of every user towards online safety.

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