What is the Win32:Evo-gen [Trj] virus?
Written by Robert Bailey

What is PWS:MSIL/Vigorf.A infection?

In this short article you will locate concerning the definition of PWS:MSIL/Vigorf.A and also its unfavorable impact on your computer. Such ransomware are a type of malware that is elaborated by online frauds to demand paying the ransom money by a target.

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In the majority of the cases, PWS:MSIL/Vigorf.A virus will certainly advise its sufferers to initiate funds transfer for the purpose of reducing the effects of the amendments that the Trojan infection has presented to the victim’s device.

PWS:MSIL/Vigorf.A Summary

These adjustments 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.
  • Attempts to connect to a dead IP:Port (3 unique times);
  • 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.
  • 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.
  • The executable is compressed using UPX;
  • Uses Windows utilities for basic functionality;
  • 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 modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Ciphering the records found on the sufferer’s disk drive — so the target can no longer use 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.
Similar behavior
Related domains Trojan-Ransom.Win32.Blocker.kwqj Trojan-Ransom.Win32.Blocker.kwqj Trojan-Ransom.Win32.Blocker.kwqj Trojan-Ransom.Win32.Blocker.kwqj


One of the most typical networks where PWS:MSIL/Vigorf.A Trojans are injected are:

  • By means of phishing emails;
  • As a repercussion of customer ending up on a resource that hosts a harmful software program;

As quickly as the Trojan is effectively injected, it will either cipher the data on the sufferer’s PC or prevent the gadget from working in a correct fashion – while additionally placing a ransom money note that discusses the demand for the targets to impact the settlement for the objective of decrypting the papers or recovering the data system back to the preliminary condition. In the majority of circumstances, the ransom money note will certainly show up when the client reboots the PC after the system has already been damaged.

PWS:MSIL/Vigorf.A circulation networks.

In different corners of the world, PWS:MSIL/Vigorf.A expands by jumps and also bounds. Nonetheless, the ransom money notes and methods of obtaining the ransom quantity may vary relying on specific local (regional) setups. The ransom notes and methods of obtaining the ransom money amount might differ depending on specific neighborhood (local) settings.

Ransomware injection

For instance:

    Faulty notifies concerning unlicensed software program.

    In specific locations, the Trojans typically wrongfully report having actually spotted some unlicensed applications made it possible for on the victim’s device. The sharp then requires the user to pay the ransom money.

    Faulty declarations concerning prohibited web content.

    In countries where software application piracy is much less popular, this method is not as reliable for the cyber scams. Conversely, the PWS:MSIL/Vigorf.A popup alert might falsely declare to be deriving from a police organization and also will certainly report having located child pornography or various other illegal data on the device.

    PWS:MSIL/Vigorf.A popup alert may falsely declare to be obtaining from a law enforcement institution as well as will certainly report having situated child porn or various other prohibited information on the tool. The alert will in a similar way consist of a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 8A44A71D
md5: 9e80960f29c4a17885b202320e73e2dd
name: 9E80960F29C4A17885B202320E73E2DD.mlw
sha1: 0e325dce26f484adc5255a5ac19f2a31d1518f9e
sha256: 9e85ba49554a6630acb7813576f375a5a41b22cf9c1e17a80defd0c2bf072ed1
sha512: 2e4abeaa802ffa29295f16623318a956d8c8a0aefad70cc06b2f071fc53b87574835f9b5cf0e3dc4240ae0ce0f082d5bd1a2455556f4cd4b55501be615bbaa99
ssdeep: 24576:a7Ck0o4yTASPz1P4eWGZFQ6Z73q7sKOc/WOFfVF1JGwKD7B8S2vtqRQXnjA/yW:auk0boNhQeWO9Zk1/ZF9jJGwK6LvoO3
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

0: [No Data]

PWS:MSIL/Vigorf.A also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0051918e1 )
Elastic malicious (high confidence)
DrWeb BackDoor.Xtreme.38
Cynet Malicious (score: 100)
ALYac Dropped:Generic.MSIL.PasswordStealerA.6E890E73
Cylance Unsafe
Zillya Trojan.Phny.Win32.175
Sangfor Trojan.Win32.Save.a
K7GW Trojan ( 0051918e1 )
Cybereason malicious.f29c4a
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Generik.KINSQQM
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Malware.Xtrat-6913730-0
Kaspersky Trojan-Ransom.Win32.Blocker.kwqj
BitDefender Dropped:Generic.MSIL.PasswordStealerA.6E890E73
NANO-Antivirus Trojan.Win32.Blocker.fnxyuf
MicroWorld-eScan Dropped:Generic.MSIL.PasswordStealerA.6E890E73
Ad-Aware Dropped:Generic.MSIL.PasswordStealerA.6E890E73
Sophos Mal/Generic-R
Comodo Malware@#18v2ymi93wdxj
VIPRE Trojan.Win32.Generic!BT
Emsisoft Dropped:Generic.MSIL.PasswordStealerA.6E890E73 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.PowerShell.ev
Avira TR/PSW.Orcus.haljq
Microsoft PWS:MSIL/Vigorf.A
AegisLab Trojan.MSIL.Generic.l!c
GData Dropped:Generic.MSIL.PasswordStealerA.6E890E73
McAfee Artemis!9E80960F29C4
MAX malware (ai score=98)
Malwarebytes Backdoor.Bot
Panda Trj/CI.A
Ikarus Backdoor.Xtreme
MaxSecure Trojan.Malware.300983.susgen
Fortinet W32/Blocker.A!tr
AVG Win32:Malware-gen

How to remove PWS:MSIL/Vigorf.A 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 GridinSoft2.

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.

Run Setup.exe

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.

GridinSoft Anti-Malware Setup

Press “Install” button.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

GridinSoft Anti-Malware Splash-Screen

Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for PWS:MSIL/Vigorf.A 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.

GridinSoft Anti-Malware Scanning

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.

GridinSoft Anti-Malware Scan Result

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 PWS:MSIL/Vigorf.A you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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About the author

Robert Bailey

I'm Robert Bailey, a passionate Security Engineer with a deep fascination for all things related to malware, reverse engineering, and white hat ethical hacking.

As a white hat hacker, I firmly believe in the power of ethical hacking to bolster security measures. By identifying vulnerabilities and providing solutions, I contribute to the proactive defense of digital infrastructures.

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