Win32:Cryptor

What is Win32:Cryptor infection?

In this post you will find regarding the interpretation of Win32:Cryptor as well as its negative effect on your computer. Such ransomware are a form of malware that is specified by online frauds to demand paying the ransom money by a victim.

It is better to prevent, than repair and repent!

When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.

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Most of the cases, Win32:Cryptor infection will instruct its targets to start funds move for the objective of counteracting the modifications that the Trojan infection has presented to the target’s device.

Win32:Cryptor Summary

These alterations can be as complies with:

• Executable code extraction. Cybercriminals often use binary packers to hinder the malicious code from reverse-engineered by malware analysts. A packer is a tool that compresses, encrypts, and modifies a malicious file’s format. Sometimes packers can be used for legitimate ends, for example, to protect a program against cracking or copying.
• Creates RWX memory. There is a security trick with memory regions that allows an attacker to fill a buffer with a shellcode and then execute it. Filling a buffer with shellcode isn’t a big deal, it’s just data. The problem arises when the attacker is able to control the instruction pointer (EIP), usually by corrupting a function’s stack frame using a stack-based buffer overflow, and then changing the flow of execution by assigning this pointer to the address of the shellcode.
• Expresses interest in specific running processes;
• A process created a hidden window;
• Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
• The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
• The executable is compressed using UPX;
• Uses Windows utilities for basic functionality;
• A process attempted to delay the analysis task by a long amount of time.;
• Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
• Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
  C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

  The registry run keys perform the same action, and can be located in different locations:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
• Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
• Attempts to disable UAC.

  User Account Control or just UAC is a part of the Windows security system which prevents apps from making unwanted changes on PC.

  UAC includes several technologies ¹:

  • File and egistry Virtualization;
  • Same-desktop Elevation;
  • Filtered Token;
  • User Interface Privilege Isolation;
  • Protected Mode Internet Explorer;
  • Installer Detection;
• Attempts to modify Explorer settings to prevent file extensions from being displayed;
• Attempts to modify Explorer settings to prevent hidden files from being displayed;
• Uses suspicious command line tools or Windows utilities;
• Ciphering the papers found on the victim’s hard disk drive — so the victim can no more make use of the data;
• Preventing normal accessibility to the target’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Win32:Cryptor

The most normal channels through which Win32:Cryptor are injected are:

• By methods of phishing emails;
• As an effect of user winding up on a source that holds a malicious software application;

As soon as the Trojan is efficiently injected, it will either cipher the data on the sufferer’s PC or avoid the gadget from operating in a correct manner – while also placing a ransom money note that mentions the requirement for the victims to impact the settlement for the function of decrypting the documents or restoring the file system back to the first problem. In many circumstances, the ransom money note will certainly show up when the customer restarts the PC after the system has currently been harmed.

Win32:Cryptor distribution channels.

In various edges of the globe, Win32:Cryptor expands by leaps and also bounds. However, the ransom notes and also tricks of obtaining the ransom amount may vary depending on certain regional (regional) setups. The ransom money notes and techniques of extorting the ransom money quantity might differ depending on particular regional (local) setups.

For instance:

Faulty signals concerning unlicensed software application.

In particular areas, the Trojans usually wrongfully report having discovered some unlicensed applications enabled on the sufferer’s device. The alert after that requires the user to pay the ransom money.

Faulty statements regarding unlawful web content.

In countries where software piracy is less preferred, this approach is not as effective for the cyber fraudulences. Additionally, the Win32:Cryptor popup alert might wrongly claim to be deriving from a law enforcement institution and also will report having situated child pornography or other unlawful data on the device.

Win32:Cryptor popup alert may incorrectly declare to be deriving from a regulation enforcement institution as well as will certainly report having situated kid porn or other illegal data on the gadget. The alert will in a similar way consist of a need for the customer to pay the ransom money.

Technical details

File Info:
crc32: BAAEAA21
md5: f43139c4d4f062d053f23b2969fc61fe
name: F43139C4D4F062D053F23B2969FC61FE.mlw
sha1: c4a9673c7b7635869fd65f66b9b37b069303ce22
sha256: 0bde108c84c3db5914a2e6f1e3886d0eead00ec62f43dc6db982a18e0497f987
sha512: 367365c79981cd2ec2561eafe960106343436c7bd8c327cedce31cb80cc4f2316e6cb4690495abfed60592915119d0c15dd0529eacb446c31dc42eb57dfa7685
ssdeep: 24576:yG6AnZhA3LcFyXKjMAPaj8pWp+2SYLGquN4:LLnZ6tKjj5eig24
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:
0: [No Data]

Win32:Cryptor also known as:

How to remove Win32:Cryptor virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.

Reasons why I would recommend GridinSoft²

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft³.

Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

Run the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-fix.exe file to install GridinSoft Anti-Malware on your system.

An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.

Press “Install” button.

Once installed, Anti-Malware will automatically run.

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Win32:Cryptor files and other malicious programs. This process can take a 20-30 minutes, so I suggest you periodically check on the status of the scan process.

Click on “Clean Now”.

When the scan has finished, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.

Are Your Protected?

GridinSoft Anti-Malware will scan and clean your PC for free in the trial period. The free version offer real-time protection for first 2 days. If you want to be fully protected at all times – I can recommended you to purchase a full version:

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If the guide doesn’t help you to remove Win32:Cryptor you can always ask me in the comments for getting help.

1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server
2. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
3. More information about GridinSoft products: https://gridinsoft.com/comparison