Trojan-Ransom.Win32.Foreign.nmuf

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

What is Trojan-Ransom.Win32.Foreign.nmuf infection?

In this short article you will certainly discover regarding the interpretation of Trojan-Ransom.Win32.Foreign.nmuf and its unfavorable effect on your computer system. 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 situations, Trojan-Ransom.Win32.Foreign.nmuf virus will certainly advise its targets to launch funds transfer for the objective of neutralizing the changes that the Trojan infection has presented to the target’s tool.

Trojan-Ransom.Win32.Foreign.nmuf Summary

These alterations 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.
  • Injection with CreateRemoteThread in a remote process;
  • 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.
  • 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.

  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Deletes its original binary from disk;
  • A system process is generating network traffic likely as a result of process injection;
  • Network activity contains more than one unique useragent.;
  • Installs itself for autorun at Windows startup. There is simple tactic using the Windows startup folder located at:
    C:\Users\[user-name]\AppData\Roaming\Microsoft\Windows\StartMenu\Programs\Startup. Shortcut links (.lnk extension) placed in this folder will cause Windows to launch the application each time [user-name] logs into Windows.

    The registry run keys perform the same action, and can be located in different locations:

    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
    • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Harvests information related to installed mail clients;
  • Creates a slightly modified copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers located on the victim’s hard disk drive — so the target can no more utilize the information;
  • Preventing normal access 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
resolver1.opendns.comRansom:Win32/Foreign.2f7dfe02
myip.opendns.comRansom:Win32/Foreign.2f7dfe02
iobot.itRansom:Win32/Foreign.2f7dfe02
yiopertoo.suRansom:Win32/Foreign.2f7dfe02
viala.atRansom:Win32/Foreign.2f7dfe02

Trojan-Ransom.Win32.Foreign.nmuf

The most normal channels whereby Trojan-Ransom.Win32.Foreign.nmuf are injected are:

  • By ways of phishing emails;
  • As an effect of individual ending up on a resource that organizes a malicious software;

As soon as the Trojan is efficiently infused, it will either cipher the information on the victim’s PC or prevent the tool from working in a proper manner – while additionally positioning a ransom money note that points out the requirement for the targets to effect the settlement for the objective of decrypting the files or recovering the documents system back to the first condition. In a lot of circumstances, the ransom note will come up when the client restarts the PC after the system has currently been harmed.

Trojan-Ransom.Win32.Foreign.nmuf distribution networks.

In different edges of the world, Trojan-Ransom.Win32.Foreign.nmuf grows by leaps and bounds. Nevertheless, the ransom notes as well as methods of obtaining the ransom amount may vary relying on specific local (regional) setups. The ransom notes as well as methods of obtaining the ransom money amount might vary depending on particular local (regional) settings.

Ransomware injection

For example:

    Faulty signals about unlicensed software application.

    In certain areas, the Trojans usually wrongfully report having actually found some unlicensed applications enabled on the victim’s device. The sharp then requires the customer to pay the ransom.

    Faulty declarations regarding prohibited content.

    In countries where software program piracy is less popular, this technique is not as reliable for the cyber fraudulences. Alternatively, the Trojan-Ransom.Win32.Foreign.nmuf popup alert may incorrectly claim to be originating from a police institution and also will certainly report having located kid pornography or other unlawful information on the gadget.

    Trojan-Ransom.Win32.Foreign.nmuf popup alert may incorrectly declare to be deriving from a regulation enforcement institution and also will report having situated kid porn or other illegal data on the tool. The alert will in a similar way contain a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: EFB45378
md5: 3f4c33a9353c7c424e61389dd866bf8c
name: 3F4C33A9353C7C424E61389DD866BF8C.mlw
sha1: 8cd25ac279cc69b13acee5e8f59eb2ee6a6ab07a
sha256: 3fa8358640a62b14365fc157703e039970874df838d44697f3fe2c324c532704
sha512: 93b0bb829a0df5d2ac15a3525a7dda5ad0148c6244ddc3e32a1466eb14de9608b7ae5c92d34f76d4370537ccfcb3d137390f15062260e8aaa71e120a761a0f97
ssdeep: 12288:YqKaySmAl4jwHvcj1HHlv5ussr6YxYaKg4n:LySmw40HvcLhuskRin
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright xa9. All rights reserved.
InternalName: Fewerr
FileVersion: 8.4.4.1
CompanyName: Github
PrivateBuild: 8.4.4.1
Comments: Wildcard Wilde Stereotypical Dbpropabortpreserve
ProductName: Fewerr
Languages: English
ProductVersion: 8.4.4.1
FileDescription: Wildcard Wilde Stereotypical Dbpropabortpreserve
OriginalFilename: Fewerr.exe
Translation: 0x0409 0x04b0

Trojan-Ransom.Win32.Foreign.nmuf also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
CynetMalicious (score: 99)
ALYacTrojan.GenericKD.12011987
CylanceUnsafe
ZillyaTrojan.Foreign.Win32.56489
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_90% (W)
AlibabaRansom:Win32/Foreign.2f7dfe02
Cybereasonmalicious.9353c7
SymantecML.Attribute.HighConfidence
ESET-NOD32Win32/Spy.Ursnif.AO
APEXMalicious
AvastWin32:Rootkit-gen [Rtk]
KasperskyTrojan-Ransom.Win32.Foreign.nmuf
BitDefenderTrojan.GenericKD.12011987
NANO-AntivirusTrojan.Win32.Ursnif.eqvzyk
MicroWorld-eScanTrojan.GenericKD.12011987
TencentWin32.Trojan.Foreign.Lmbk
Ad-AwareTrojan.GenericKD.12011987
SophosMal/Generic-S
BitDefenderThetaGen:NN.ZexaF.34686.Jq0@aSKv3lmi
VIPRETrojan.Win32.Generic!BT
TrendMicroTSPY_HPURSNIF.SMZD2
McAfee-GW-EditionBehavesLike.Win32.Dropper.hc
FireEyeGeneric.mg.3f4c33a9353c7c42
EmsisoftTrojan.GenericKD.12011987 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan.Foreign.ctk
WebrootW32.Trojan.Gen
AviraHEUR/AGEN.1119865
eGambitUnsafe.AI_Score_99%
MicrosoftTrojan:Win32/Skeeyah.A!rfn
ArcabitTrojan.Generic.DB749D3
AegisLabTrojan.Win32.Foreign.j!c
GDataTrojan.GenericKD.12011987
AhnLab-V3Win-Trojan/Sagecrypt.Gen
Acronissuspicious
McAfeeArtemis!3F4C33A9353C
MAXmalware (ai score=85)
VBA32BScope.Trojan.Downloader
MalwarebytesMachineLearning/Anomalous.100%
PandaTrj/CI.A
TrendMicro-HouseCallTSPY_HPURSNIF.SMZD2
RisingRansom.Foreign!8.292 (CLOUD)
IkarusTrojan-Spy.Agent
FortinetW32/Foreign.NMUF!tr
AVGWin32:Rootkit-gen [Rtk]
Paloaltogeneric.ml

How to remove Trojan-Ransom.Win32.Foreign.nmuf ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

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 Trojan-Ransom.Win32.Foreign.nmuf 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 Trojan-Ransom.Win32.Foreign.nmuf you can always ask me in the comments for getting help.

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References

  1. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  2. More information about GridinSoft products: https://gridinsoft.com/comparison

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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