What is Win32/Motnug.F infection?

In this post you will certainly find about the definition of Win32/Motnug.F and its negative effect on your computer system. Such ransomware are a form of malware that is elaborated by online fraudulences to demand paying the ransom by a sufferer.

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Most of the instances, Win32/Motnug.F ransomware will advise its sufferers to launch funds transfer for the purpose of reducing the effects of the modifications that the Trojan infection has introduced to the victim’s device.

Win32/Motnug.F 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.
  • Network anomalies occured during the analysis.;
  • 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.

  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the victim’s hard disk — so the sufferer can no longer utilize the information;
  • Preventing routine access to the sufferer’s workstation;


The most normal channels through which Win32/Motnug.F are infused are:

  • By means of phishing emails;
  • As an effect of user winding up on a source that organizes a destructive software program;

As soon as the Trojan is efficiently infused, it will certainly either cipher the data on the target’s PC or avoid the device from functioning in a proper manner – while also placing a ransom note that points out the demand for the targets to impact the settlement for the function of decrypting the documents or restoring the documents system back to the first condition. In a lot of circumstances, the ransom note will certainly come up when the customer restarts the PC after the system has currently been damaged.

Win32/Motnug.F distribution networks.

In various edges of the globe, Win32/Motnug.F expands by leaps as well as bounds. However, the ransom notes and also tricks of extorting the ransom amount may differ relying on specific neighborhood (regional) setups. The ransom notes as well as methods of obtaining the ransom quantity might vary depending on certain neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software program.

    In certain locations, the Trojans frequently wrongfully report having detected some unlicensed applications made it possible for on the target’s gadget. The sharp after that demands the user to pay the ransom.

    Faulty declarations about illegal web content.

    In nations where software application piracy is less prominent, this approach is not as reliable for the cyber frauds. Conversely, the Win32/Motnug.F popup alert may falsely assert to be originating from a police organization as well as will certainly report having situated kid porn or various other prohibited information on the tool.

    Win32/Motnug.F popup alert may wrongly claim to be obtaining from a legislation enforcement institution and also will report having situated kid pornography or other unlawful data on the gadget. The alert will similarly have a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: F998D48B
md5: 221db0f664ea781b4dff81e0a354c63d
name: 221DB0F664EA781B4DFF81E0A354C63D.mlw
sha1: 7b465b1e0d7be4d84e06a115fd55b97207de768c
sha256: 2fdef9d8896705f468f66eb8c20e5892d161c1d98ab5962aa231326546e25056
sha512: ce273af1ae0bf8e43ddc32eb9caede258bb8a9a22bf3dc5c813975a13c5ed919bff062feb6069dd3da92e5b236de239bf5e2e303e3fd356525b21e3c2a7d117b
ssdeep: 3072:EKZeSQPG0192crDKoqcqVlMBP4moqFKYPP5XU7SPE1q1TPVXjOWM8vhbh:hFQPG0Xll1UCFlF+SsSYsbh
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Motnug.F also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Riskware ( 0040eff71 )
Elastic malicious (high confidence)
DrWeb Trojan.Loader.686
Cynet Malicious (score: 90)
ALYac Gen:Variant.Midie.72688
Cylance Unsafe
Zillya Trojan.Cobalt.Win32.663
Sangfor Ransom.Win32.APT41.IOC
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Trojan:Win32/Motnug.8bbefec0
K7GW Riskware ( 0040eff71 )
Cybereason malicious.664ea7
Cyren W32/Trojan.WYPQ-4488
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Motnug.F.gen
APEX Malicious
Avast Win32:Trojan-gen
Kaspersky HEUR:Trojan.Win32.Agentb.gen
BitDefender Gen:Variant.Midie.72688
NANO-Antivirus Trojan.Win32.Cobalt.hnvwmn
MicroWorld-eScan Gen:Variant.Midie.72688
Tencent Malware.Win32.Gencirc.11836d3f
Ad-Aware Gen:Variant.Midie.72688
BitDefenderTheta Gen:NN.ZexaF.34670.ryZ@ayNwSl
TrendMicro Backdoor.Win32.WINNTI.AC
McAfee-GW-Edition GenericRXKW-JP!221DB0F664EA
Emsisoft Gen:Variant.Midie.72688 (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Shelma.hbg
Avira HEUR/AGEN.1139518
eGambit Unsafe.AI_Score_99%
Microsoft Ransom:Win32/Cobra
Arcabit Trojan.Midie.D11BF0
AegisLab Trojan.Multi.Generic.4!c
GData Gen:Variant.Midie.72688
AhnLab-V3 Malware/Win32.Generic.C4133881
McAfee GenericRXKW-JP!221DB0F664EA
MAX malware (ai score=83)
VBA32 Trojan.Wacatac
Malwarebytes MachineLearning/Anomalous.94%
Panda Trj/Genetic.gen
TrendMicro-HouseCall Backdoor.Win32.WINNTI.AC
Rising Ransom.Cobra!8.11C98 (CLOUD)
Yandex Trojan.Motnug!30CpGc07bHw
Ikarus Trojan.Win32.Motnug
MaxSecure Trojan.Malware.82199810.susgen
Fortinet W32/PossibleThreat
AVG Win32:Trojan-gen
Qihoo-360 Win32/Ransom.Cobra.HwoCEpsA

How to remove Win32/Motnug.F 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.

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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/Motnug.F 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/Motnug.F you can always ask me in the comments for getting help.

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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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