What is Trojan:MSIL/Toauta!rfn infection?

In this article you will find regarding the meaning of Trojan:MSIL/Toauta!rfn and its negative impact on your computer system. Such ransomware are a form of malware that is elaborated by on the internet scams to require paying the ransom by a target.

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Most of the situations, Trojan:MSIL/Toauta!rfn infection will advise its targets to initiate funds move for the purpose of neutralizing the amendments that the Trojan infection has actually presented to the victim’s gadget.

Trojan:MSIL/Toauta!rfn Summary

These modifications can be as complies with:

  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • 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;
  • Executed a process and injected code into it, probably while unpacking;
  • Sniffs keystrokes;
  • 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
  • Creates a copy of itself;
  • Ciphering the documents found on the target’s hard disk drive — so the victim can no longer utilize 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 common channels through which Trojan:MSIL/Toauta!rfn Trojans are infused are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As an effect of customer ending up on a resource that organizes a destructive software application;

As soon as the Trojan is successfully injected, it will either cipher the data on the target’s PC or avoid the tool from functioning in an appropriate fashion – while also putting a ransom money note that points out the need for the targets to impact the repayment for the function of decrypting the files or restoring the documents system back to the first condition. In a lot of instances, the ransom note will certainly come up when the client restarts the PC after the system has currently been harmed.

Trojan:MSIL/Toauta!rfn circulation networks.

In different edges of the world, Trojan:MSIL/Toauta!rfn grows by jumps and also bounds. Nevertheless, the ransom notes and also methods of extorting the ransom quantity might vary relying on specific regional (local) settings. The ransom notes and methods of obtaining the ransom quantity might vary depending on particular regional (local) settings.

Ransomware injection

For instance:

    Faulty notifies about unlicensed software program.

    In specific areas, the Trojans commonly wrongfully report having actually identified some unlicensed applications enabled on the victim’s gadget. The sharp after that requires the individual to pay the ransom.

    Faulty declarations regarding illegal web content.

    In nations where software program piracy is much less popular, this technique is not as efficient for the cyber fraudulences. Alternatively, the Trojan:MSIL/Toauta!rfn popup alert might wrongly assert to be stemming from a law enforcement organization and also will report having situated kid porn or other prohibited information on the gadget.

    Trojan:MSIL/Toauta!rfn popup alert might incorrectly declare to be acquiring from a law enforcement organization and also will report having situated youngster porn or other unlawful data on the tool. The alert will likewise consist of a need for the customer to pay the ransom.

Technical details

File Info:

crc32: B032358D
md5: ba6b3fd1b1e1e192a44f3f798661de62
name: BA6B3FD1B1E1E192A44F3F798661DE62.mlw
sha1: 54aa279c7e178a514dde9fab659722b64b431c0d
sha256: 167f498a41b63a505fc56cc60c7f476e10d0c71055468c733b1070eecf8c0924
sha512: 84dad732ba48de89a44b554da1730f56c0e46d6f212bb0f6b9b22a16ad16f778ca8e5717d6affbb8c9777c2feadc5fcf9c63fe5e7deccdf91fc22423c29f462f
ssdeep: 6144:CtQ7JXqRSydj6Ub1blNTGkDTtFgxXZjd:Cq7J8SSOqhNSk1qxJ
type: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9
Assembly Version: 500.500.500.500
InternalName: Patch.exe
FileVersion: 500.500.500.500
CompanyName: Copyright xa9
LegalTrademarks: Copyright xa9
Comments: Copyright xa9 RPX 1.3.4399.43191
ProductName: Copyright xa9
ProductVersion: 500.500.500.500
FileDescription: Copyright xa9
OriginalFilename: Patch.exe

Trojan:MSIL/Toauta!rfn also known as:

GridinSoft Trojan.Ransom.Gen
K7AntiVirus Trojan ( 700000121 )
Elastic malicious (high confidence)
DrWeb Trojan.DownLoader26.61284
Cynet Malicious (score: 100)
McAfee RDN/Ransom.t
Cylance Unsafe
Zillya Trojan.Blocker.Win32.33294
Sangfor Worm.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Blocker.2b0d95f5
K7GW Trojan ( 700000121 )
Cybereason malicious.1b1e1e
Symantec Trojan.Gen.MBT
ESET-NOD32 a variant of MSIL/Packed.RPX.J
APEX Malicious
Avast MSIL:Crypt-TY [Trj]
ClamAV Win.Trojan.Generic-7667164-0
Kaspersky Trojan-Ransom.Win32.Blocker.fdmc
BitDefender Gen:Variant.Razy.73407
NANO-Antivirus Trojan.Win32.Disfa.dqmqly
MicroWorld-eScan Gen:Variant.Razy.73407
Tencent Win32.Trojan.Blocker.Pgmt
Ad-Aware Gen:Variant.Razy.73407
Sophos Mal/Generic-R
Comodo Malware@#j1utavnlu176
BitDefenderTheta Gen:NN.ZemsilF.34628.om0@amMWtSl
VIPRE Trojan.MSIL.Bladabindi.ala (v)
McAfee-GW-Edition BehavesLike.Win32.Backdoor.dc
Emsisoft Gen:Variant.Razy.73407 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan/Generic.ahneg
Avira HEUR/AGEN.1117184
Antiy-AVL GrayWare/MSIL.Injector.AWA
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Trojan:MSIL/Toauta!rfn
ZoneAlarm Trojan-Ransom.Win32.Blocker.fdmc
GData Gen:Variant.Razy.73407
VBA32 Hoax.Blocker
MAX malware (ai score=89)
Panda Trj/CI.A
TrendMicro-HouseCall BKDR_BLADABI.BFK
Rising Ransom.Blocker!8.12A (CLOUD)
Ikarus Win32.VBCrypt
Fortinet MSIL/Injector.BMJ!tr
AVG MSIL:Crypt-TY [Trj]
Qihoo-360 Generic/HEUR/Malware.QVM03.Gen

How to remove Trojan:MSIL/Toauta!rfn virus?

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:MSIL/Toauta!rfn 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 Trojan:MSIL/Toauta!rfn 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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