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

What is Win32/Weelsof.B infection?

In this article you will certainly find about the definition of Win32/Weelsof.B as well as its negative impact on your computer. Such ransomware are a kind of malware that is clarified by online fraudulences to demand paying the ransom by a victim.

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Most of the instances, Win32/Weelsof.B infection will certainly advise its sufferers to initiate funds transfer for the function of reducing the effects of the amendments that the Trojan infection has introduced to the target’s gadget.

Win32/Weelsof.B Summary

These adjustments 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.
  • 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 found on the target’s hard disk drive — so the target can no longer use the information;
  • Preventing regular accessibility to the target’s workstation;
Similar behavior
Related domains BehavesLike.Win32.Vundo.qc BehavesLike.Win32.Vundo.qc


One of the most normal networks through which Win32/Weelsof.B are infused are:

  • By means of phishing e-mails;
  • As a repercussion of individual ending up on a source that organizes a harmful software program;

As quickly as the Trojan is efficiently infused, it will either cipher the information on the victim’s computer or stop the device from operating in an appropriate manner – while also positioning a ransom money note that discusses the demand for the targets to effect the payment for the purpose of decrypting the records or recovering the documents system back to the initial problem. In a lot of instances, the ransom note will come up when the customer reboots the COMPUTER after the system has currently been harmed.

Win32/Weelsof.B distribution networks.

In numerous corners of the globe, Win32/Weelsof.B grows by jumps and bounds. Nevertheless, the ransom money notes and techniques of extorting the ransom money amount may vary depending upon specific neighborhood (local) setups. The ransom money notes as well as techniques of obtaining the ransom money quantity might vary depending on specific regional (regional) setups.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software application.

    In specific locations, the Trojans typically wrongfully report having discovered some unlicensed applications allowed on the victim’s device. The alert after that requires the customer to pay the ransom money.

    Faulty statements concerning unlawful web content.

    In countries where software program piracy is much less popular, this method is not as reliable for the cyber frauds. Alternatively, the Win32/Weelsof.B popup alert might wrongly assert to be deriving from a law enforcement organization and will certainly report having situated child porn or various other illegal data on the device.

    Win32/Weelsof.B popup alert might wrongly claim to be deriving from a legislation enforcement establishment and will report having located kid porn or various other prohibited information on the gadget. The alert will in a similar way consist of a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: 5C06184B
md5: c3a09bf67cf69078fcb3336749762749
name: C3A09BF67CF69078FCB3336749762749.mlw
sha1: 1502de012ed970279e28391774b22aa22f1b7df1
sha256: 45d2455e47504b0b0d421567b65ae7f5cd0fc205520a72610950b983575bfcad
sha512: 8800378ca73ab8c4c7266acbf8e33c06c32f0715fd1428d486b892b90d461059e1972ad6a9a3c29d1e98804e97fd59b21c0362f60784e9530f047550d70c7fc1
ssdeep: 1536:W7du32hs3K85JBP6/1m5NHKvnMrAQPWcMMMMMMMmMMMMKflt:Ku3Y6HBP69waM8EjMMMMMMMmMMMMKf
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.1180
Cylance Unsafe
Zillya Trojan.Weelsof.Win32.84
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/KlopRansom.174
K7GW Trojan ( 0040f0751 )
Cybereason malicious.67cf69
Symantec Trojan.Ransomlock!g7
ESET-NOD32 Win32/Weelsof.B
APEX Malicious
Avast Win32:Weelsof-A [Trj]
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Variant.Symmi.1180
NANO-Antivirus Trojan.Win32.Weelsof.xlphc
ViRobot Trojan.Win32.A.Weelsof.59904
MicroWorld-eScan Gen:Variant.Symmi.1180
Tencent Win32.Trojan.Generic.Syhk
Ad-Aware Gen:Variant.Symmi.1180
Sophos Mal/Generic-R + Mal/Kuluoz-A
Comodo Malware@#3l4wmz8z1igxm
BitDefenderTheta Gen:NN.ZexaF.34738.dqW@ayX1Xfhi
VIPRE Trojan.Win32.Weelsof.b (v)
McAfee-GW-Edition BehavesLike.Win32.Vundo.qc
Emsisoft Gen:Variant.Symmi.1180 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Weelsof.fe
Webroot W32.Malware.Gen
Avira TR/Agent.hrta
eGambit Generic.Malware
Antiy-AVL Trojan/Generic.ASMalwS.557176
Kingsoft Win32.Troj.Weelsof.kf.(kcloud)
Microsoft Ransom:Win32/Weelsof.D
AegisLab Trojan.Win32.Weelsof.4!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Gen:Variant.Symmi.1180
Acronis suspicious
McAfee Ransom-AAK
MAX malware (ai score=100)
VBA32 Trojan.Weelsof
Panda Trj/Genetic.gen
Rising [email protected] (RDML:kNIG0oXdLQlERZ3+X3KQ0A)
Ikarus Trojan.Win32.Weelsof
MaxSecure Trojan.Malware.4472618.susgen
Fortinet W32/Weelsof!tr
AVG Win32:Weelsof-A [Trj]

How to remove Win32/Weelsof.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 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:

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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

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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