Backdoor:Win32/Tofsee.BS!MTB

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

What is Backdoor:Win32/Tofsee.BS!MTB infection?

In this post you will certainly locate about the meaning of Backdoor:Win32/Tofsee.BS!MTB as well as its negative effect on your computer system. Such ransomware are a type of malware that is specified by online frauds to require paying the ransom by a victim.

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Most of the situations, Backdoor:Win32/Tofsee.BS!MTB virus will certainly advise its targets to start funds move for the purpose of neutralizing the changes that the Trojan infection has actually introduced to the sufferer’s device.

Backdoor:Win32/Tofsee.BS!MTB 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.
  • Unconventionial language used in binary resources: Korean;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the target’s disk drive — so the target can no more make use of the data;
  • Preventing regular accessibility to the target’s workstation;
Similar behavior
Related domains
z.whorecord.xyz Ransom.Nemty
a.tomx.xyz Ransom.Nemty

Backdoor:Win32/Tofsee.BS!MTB

The most normal channels whereby Backdoor:Win32/Tofsee.BS!MTB Trojans are injected 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 individual ending up on a resource that holds a harmful software;

As soon as the Trojan is efficiently injected, it will certainly either cipher the information on the victim’s PC or protect against the gadget from functioning in an appropriate fashion – while likewise positioning a ransom money note that discusses the requirement for the sufferers to effect the repayment for the function of decrypting the records or restoring the documents system back to the first problem. In a lot of instances, the ransom note will certainly turn up when the customer reboots the COMPUTER after the system has currently been damaged.

Backdoor:Win32/Tofsee.BS!MTB circulation networks.

In numerous corners of the world, Backdoor:Win32/Tofsee.BS!MTB grows by jumps and bounds. Nevertheless, the ransom money notes and tricks of obtaining the ransom amount may vary relying on certain neighborhood (local) settings. The ransom notes and also methods of extorting the ransom money amount may differ depending on particular regional (regional) settings.

Ransomware injection

For instance:

    Faulty signals concerning unlicensed software.

    In particular locations, the Trojans typically wrongfully report having found some unlicensed applications made it possible for on the target’s gadget. The alert after that demands the customer to pay the ransom.

    Faulty declarations regarding illegal content.

    In nations where software program piracy is much less preferred, this approach is not as effective for the cyber frauds. Conversely, the Backdoor:Win32/Tofsee.BS!MTB popup alert might wrongly declare to be deriving from a law enforcement establishment and will report having located kid porn or various other illegal data on the device.

    Backdoor:Win32/Tofsee.BS!MTB popup alert may wrongly declare to be obtaining from a regulation enforcement organization and will report having located youngster pornography or other illegal data on the tool. The alert will similarly contain a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 8256ADEA
md5: 9b410fc32632aa213a58f3467bb22dbc
name: motorolam500mp3playerfirmware-rtmd-ajvatv4obgaajrscaenofwasadg_6yya.exe
sha1: e5904b4270a56b5fc675d112f7c24de7fab025c3
sha256: d1f5263b5d8e3238639b93e6810b45095ed019e7dd20c53ade8b162f86ed0a35
sha512: e6744efd25cbd4d814cbd3d643291e97de64c0c810fe0abe34744d0ec52118716a0b7ede548b7ec8b06a1a2b7f339e063d78cd3f09b0412ef7e0830c25b7a253
ssdeep: 98304:hZUanPihpbcxdLRcXVvQVySsXo6UHPQ0QG0Q:hK9mxdLRcXXoXNQGJ
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

FileVersionNew: 2.3.4
InternalServiceName: speedy.exe
Copyright: Copyright (C) 2020, softtail

Backdoor:Win32/Tofsee.BS!MTB also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware
MicroWorld-eScan Trojan.GenericKD.33325839
FireEye Generic.mg.9b410fc32632aa21
McAfee Artemis!9B410FC32632
AegisLab Trojan.Win32.Malicious.4!c
Sangfor Malware
BitDefender Trojan.GenericKD.33325839
Cybereason malicious.32632a
Symantec Ransom.Nemty
APEX Malicious
GData Win32.Trojan.Agent.KQXQKX
Kaspersky Trojan.Win32.AntiAV.cvue
Rising Trojan.Kryptik!8.8 (C64:YzY0OsQt60lU6+EA)
Endgame malicious (high confidence)
Sophos Mal/Generic-S
DrWeb Trojan.Siggen9.13650
Invincea heuristic
McAfee-GW-Edition BehavesLike.Win32.MultiPlug.wc
Trapmine malicious.high.ml.score
Emsisoft Trojan.GenericKD.33325839 (B)
Ikarus Trojan.Win32.Krypt
Cyren W32/Kryptik.BDL.gen!Eldorado
Webroot W32.Trojan.Gen
Microsoft Backdoor:Win32/Tofsee.BS!MTB
Arcabit Trojan.Generic.D1FC830F
ZoneAlarm Trojan.Win32.AntiAV.cvue
AhnLab-V3 Trojan/Win32.MalPe.R326644
BitDefenderTheta Gen:NN.ZexaF.34090.UBW@aeIZLAeG
ALYac Trojan.Agent.EMCW
MAX malware (ai score=81)
VBA32 BScope.Trojan.AET.281105
Malwarebytes Trojan.MalPack.GS
Panda Trj/GdSda.A
ESET-NOD32 a variant of Win32/Kryptik.HBHP
Tencent Win32.Trojan.Antiav.Hufh
SentinelOne DFI – Malicious PE
Fortinet PossibleThreat.MU
Ad-Aware Trojan.GenericKD.33325839
AVG FileRepMalware
Paloalto generic.ml
CrowdStrike win/malicious_confidence_90% (W)

How to remove Backdoor:Win32/Tofsee.BS!MTB 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

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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 Backdoor:Win32/Tofsee.BS!MTB 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 Backdoor:Win32/Tofsee.BS!MTB 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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