Virus.Win32.PolyRansom.b

What is Virus.Win32.PolyRansom.b infection?

In this post you will certainly find concerning the meaning of Virus.Win32.PolyRansom.b and its unfavorable impact on your computer system. Such ransomware are a kind of malware that is elaborated by online frauds to require paying the ransom money by a sufferer.

In the majority of the instances, Virus.Win32.PolyRansom.b ransomware will certainly instruct its sufferers to initiate funds transfer for the purpose of neutralizing the modifications that the Trojan infection has introduced to the sufferer’s gadget.

Virus.Win32.PolyRansom.b Summary

These modifications can be as follows:

• 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.
• At least one process apparently crashed during execution;
• 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.
• 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.
• HTTP traffic contains suspicious features which may be indicative of malware related traffic;
• Performs some HTTP requests;
• The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
• 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.
• Likely virus infection of existing system binary;
• 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;
• Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
• 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 records located on the victim’s hard disk — so the sufferer can no longer use the information;
• Preventing normal accessibility to the sufferer’s workstation. This is the typical behavior of a virus called locker. It blocks access to the computer until the victim pays the ransom.

Similar behavior

Related domains

Virus.Win32.PolyRansom.b

One of the most normal networks whereby Virus.Win32.PolyRansom.b Ransomware Trojans are injected are:

• By means of phishing e-mails;
• As a repercussion of customer winding up on a source that hosts a harmful software;

As soon as the Trojan is effectively injected, it will either cipher the data on the sufferer’s PC or prevent the tool from working in an appropriate way – while likewise positioning a ransom money note that points out the requirement for the sufferers to impact the settlement for the function of decrypting the papers or bring back the data system back to the first condition. In the majority of instances, the ransom note will certainly show up when the customer restarts the PC after the system has actually currently been damaged.

Virus.Win32.PolyRansom.b circulation networks.

In different corners of the globe, Virus.Win32.PolyRansom.b expands by leaps and also bounds. However, the ransom notes and also tricks of obtaining the ransom amount might differ relying on certain local (regional) setups. The ransom money notes as well as methods of obtaining the ransom quantity might vary depending on specific neighborhood (regional) settings.

For example:

Faulty alerts regarding unlicensed software.

In certain areas, the Trojans usually wrongfully report having spotted some unlicensed applications allowed on the victim’s gadget. The sharp then requires the user to pay the ransom money.

Faulty statements concerning prohibited material.

In countries where software program piracy is much less popular, this method is not as effective for the cyber scams. Additionally, the Virus.Win32.PolyRansom.b popup alert might incorrectly declare to be originating from a law enforcement establishment and also will report having located child pornography or various other illegal information on the device.

Virus.Win32.PolyRansom.b popup alert might wrongly assert to be acquiring from a regulation enforcement organization and will certainly report having located kid porn or various other prohibited information on the gadget. The alert will in a similar way consist of a need for the individual to pay the ransom money.

Technical details

File Info:
crc32: 5268AC7Emd5: 87e4435635d035dc7d3be4fcec9cc7c1name: 87E4435635D035DC7D3BE4FCEC9CC7C1.mlwsha1: 2cfadc79dc1ea29a56b3d89db85b087b01ff03a2sha256: a1de40b9a49349b4010ef253917ca7cbeb8cad2789d5cc44fba5b0bf9ee666eesha512: c7ccf0bd597b99055b7c9209fff2812fb46ddac9a5495cf86802989e2b23f13b3fe893a98e070f7f826df51331f2a8c7fb1eb727b0bd9ba0bda3e482c598902bssdeep: 12288:TOoKneZW7qvoRXwnjPTdLPrUKCMnoC+4Ojw1/HsLUMNyCpO9PguGfDhLZ1vLrT4R:TOq0tyLZLjUCou1/HsLUX949fDFFORVtype: PE32 executable (GUI) Intel 80386, for MS Windows
Version Info:
0: [No Data]

Virus.Win32.PolyRansom.b also known as:

How to remove Virus.Win32.PolyRansom.b 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

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”.

Are Your Protected?

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

1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server