Worm:MSIL/Necast.B

What is Worm:MSIL/Necast.B infection?

In this short article you will certainly discover concerning the meaning of Worm:MSIL/Necast.B as well as its negative impact on your computer system. Such ransomware are a kind of malware that is clarified by on-line frauds to demand paying the ransom by a sufferer.

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 instances, Worm:MSIL/Necast.B infection will advise its sufferers to launch funds move for the purpose of reducing the effects of the modifications that the Trojan infection has presented to the victim’s tool.

Worm:MSIL/Necast.B Summary

These alterations 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.
• 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.
• Detected script timer window indicative of sleep style evasion;
• A process attempted to delay the analysis task.;
• Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

  Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

• 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.
• A scripting utility was executed;
• Uses Windows utilities for basic functionality;
• Sniffs keystrokes;
• Creates a copy of itself;
• 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;
• Ciphering the documents located on the sufferer’s disk drive — so the sufferer can no longer make use of the data;
• Preventing routine 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.

Worm:MSIL/Necast.B

One of the most regular networks through which Worm:MSIL/Necast.B Trojans are injected are:

• By ways of phishing e-mails;
• As a repercussion of customer ending up on a source that hosts a malicious software program;

As quickly as the Trojan is effectively infused, it will either cipher the data on the target’s computer or prevent the gadget from functioning in a correct fashion – while also putting a ransom note that states the requirement for the targets to impact the settlement for the objective of decrypting the files or bring back the data system back to the initial problem. In many instances, the ransom note will turn up when the customer restarts the PC after the system has already been harmed.

Worm:MSIL/Necast.B distribution channels.

In various edges of the globe, Worm:MSIL/Necast.B expands by jumps and bounds. Nevertheless, the ransom money notes as well as tricks of extorting the ransom quantity may differ depending upon certain regional (local) settings. The ransom notes as well as techniques of extorting the ransom money quantity may vary depending on particular local (regional) settings.

As an example:

Faulty notifies about unlicensed software application.

In particular areas, the Trojans typically wrongfully report having identified some unlicensed applications allowed on the sufferer’s device. The alert after that requires the individual to pay the ransom money.

Faulty statements regarding illegal content.

In countries where software piracy is less popular, this approach is not as reliable for the cyber frauds. Conversely, the Worm:MSIL/Necast.B popup alert might falsely assert to be stemming from a law enforcement organization as well as will report having situated youngster pornography or other illegal data on the device.

Worm:MSIL/Necast.B popup alert might incorrectly claim to be deriving from a law enforcement organization and also will report having located kid pornography or other unlawful data on the device. The alert will likewise consist of a need for the user to pay the ransom money.

Technical details

File Info:
crc32: CCBB8058
md5: bbb3f1debc36c72f8df997b9c34b465e
name: BBB3F1DEBC36C72F8DF997B9C34B465E.mlw
sha1: f566e8fbd1e8257ca02f63de7d305c926197a949
sha256: 08ba540f3c2aba2d4d18d6a19c497aae1466af72d43b0596af63b4f3d4e4de4b
sha512: df5ee35d82dd5f9f1412b5c74a01be410e33f8f8b9a1ba65beedd8819cd626fa3b3745eb9845e46933dd76ad184d73558add33bfae7cafe4be8d9af0e637a1a5
ssdeep: 3072:SQd1hgPxw/xySeilgTi+ujWLw/VDBUtqLdzZYH5xtFTbbv4zve+YRH9ub6hWB:S6KZ8xMilgm+u6LQdOZp+YR91hW
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:
Translation: 0x0000 0x04b0
LegalCopyright:  
Assembly Version: 0.0.0.0
InternalName: n.exe
FileVersion: 0.0.0.0
ProductVersion: 0.0.0.0
FileDescription:  
OriginalFilename: n.exe

Worm:MSIL/Necast.B also known as:

How to remove Worm:MSIL/Necast.B virus?

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

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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 Worm:MSIL/Necast.B 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:

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Worm:MSIL/Necast.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
2. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
3. More information about GridinSoft products: https://gridinsoft.com/comparison