Written by Robert Bailey

What is Win32/Weelsof.B infection?

In this post you will certainly find about the meaning of Win32/Weelsof.B and also its adverse impact on your computer system. Such ransomware are a form of malware that is elaborated by on-line frauds to require paying the ransom by a target.

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Most of the cases, Win32/Weelsof.B ransomware will certainly instruct its victims to launch funds move for the purpose of reducing the effects of the modifications that the Trojan infection has presented to the target’s tool.

Win32/Weelsof.B Summary

These modifications can be as adheres to:

  • 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.
  • A process attempted to delay the analysis task.;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Behavior consistent with a dropper attempting to download the next stage.;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files located on the victim’s disk drive — so the victim can no longer use the information;
  • Preventing normal access 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.


The most regular networks through which Win32/Weelsof.B are infused are:

  • By means of phishing emails;
  • As an effect of customer winding up on a source that organizes a malicious software;

As soon as the Trojan is effectively injected, it will either cipher the data on the target’s PC or prevent the gadget from working in an appropriate manner – while additionally positioning a ransom money note that mentions the demand for the targets to effect the settlement for the function of decrypting the records or recovering the documents system back to the preliminary condition. In the majority of instances, the ransom note will come up when the client restarts the COMPUTER after the system has currently been harmed.

Win32/Weelsof.B distribution networks.

In different edges of the globe, Win32/Weelsof.B expands by leaps and also bounds. Nonetheless, the ransom money notes as well as techniques of obtaining the ransom amount might differ relying on certain regional (local) setups. The ransom notes and methods of extorting the ransom money quantity may differ depending on specific neighborhood (local) setups.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software application.

    In particular areas, the Trojans typically wrongfully report having actually discovered some unlicensed applications made it possible for on the victim’s tool. The alert after that requires the user to pay the ransom.

    Faulty declarations about prohibited content.

    In countries where software application piracy is much less popular, this approach is not as efficient for the cyber frauds. Alternatively, the Win32/Weelsof.B popup alert may falsely declare to be originating from a law enforcement establishment and also will certainly report having situated youngster pornography or various other unlawful information on the tool.

    Win32/Weelsof.B popup alert might falsely declare to be obtaining from a regulation enforcement institution and also will certainly report having located kid pornography or various other illegal information on the device. The alert will similarly have a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: C21DB945
md5: 19809af8d0d29ab571a276323c7b712d
name: 19809AF8D0D29AB571A276323C7B712D.mlw
sha1: a4a87d9f783232de65c97d91318f0affc5fa7322
sha256: 8e7c5d807883ff7939ebb8ceb9a6ff9776f4e0fb49591a4962a456c56b504f69
sha512: b6f49abc1ff5178c628b0f079f7db301e2b8f3704537c2b346aefb1aa699ce5ee0145251cc3577649815f142317117e65e733f3449e3a4eef827bfca987290e4
ssdeep: 768:NHj96DJEXMlIWS4dz4EwGdPCjZr7h967SdI0KdbPE/xeAKWU0MbY:NHAuXJp4dz4udqZdI0sSxeFM
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Weelsof.B also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 0040f0751 )
Elastic malicious (high confidence)
DrWeb Trojan.Winlock.6576
Cynet Malicious (score: 100)
ALYac Gen:Variant.Symmi.893
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_90% (D)
K7GW Trojan ( 0040f0751 )
Cybereason malicious.8d0d29
ESET-NOD32 Win32/Weelsof.B
APEX Malicious
Avast Win32:Rootkit-gen [Rtk]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Symmi.893
NANO-Antivirus Trojan.Win32.Weelsof.bblgnh
ViRobot Trojan.Win32.A.Weelsof.57344.Y
MicroWorld-eScan Gen:Variant.Symmi.893
Tencent Win32.Trojan.Weelsof.jrc
Ad-Aware Gen:Variant.Symmi.893
Sophos ML/PE-A + Mal/Weelsof-A
Comodo Malware@#3o0c22wskp3w4
F-Secure Trojan.TR/Crypt.ZPACK.Gen
BitDefenderTheta Gen:NN.ZexaF.34678.dqX@aisU!Cci
VIPRE Trojan.Win32.Weelsof.b (v)
Emsisoft Gen:Variant.Symmi.893 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Weelsof.dg
Webroot W32.Trojan.Gen
Avira TR/Crypt.ZPACK.Gen
Kingsoft Win32.Troj.Weelsof.jb.(kcloud)
Microsoft Ransom:Win32/Weelsof.D
AegisLab Trojan.Win32.Weelsof.4!c
GData Gen:Variant.Symmi.893
TACHYON Trojan/W32.Weelsof.57398
AhnLab-V3 Trojan/Win32.Weelsof.R33984
McAfee GenericR-FIL!19809AF8D0D2
MAX malware (ai score=89)
VBA32 TScope.Malware-Cryptor.SB
Panda Generic Malware
Rising Ransom.Weelsof!8.8B3 (CLOUD)
Yandex Trojan.GenAsa!1F2c4HgvUMo
Ikarus Trojan.Win32.Weelsof
Fortinet W32/Weelsof!tr
AVG Win32:Rootkit-gen [Rtk]
Qihoo-360 Win32/Ransom.Generic.HwcBEpsA

How to remove Win32/Weelsof.B ransomware?

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 Win32/Weelsof.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.

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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Weelsof.B 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

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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