Backdoor:Win32/Tofsee.B

Written by Robert Bailey

What is Backdoor:Win32/Tofsee.B infection?

In this article you will locate concerning the definition of Backdoor:Win32/Tofsee.B and its unfavorable influence on your computer. Such ransomware are a type of malware that is specified by on the internet fraudulences to require paying the ransom by a target.

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Most of the cases, Backdoor:Win32/Tofsee.B infection will certainly advise its targets to launch funds transfer for the purpose of counteracting the amendments that the Trojan infection has introduced to the victim’s device.

Backdoor:Win32/Tofsee.B Summary

These alterations can be as follows:

  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Attempts to stop active services;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents located on the victim’s hard disk drive — so the victim can no more utilize the data;
  • Preventing regular accessibility to the victim’s workstation;

Backdoor:Win32/Tofsee.B

The most typical channels through which Backdoor:Win32/Tofsee.B are infused are:

  • By means of phishing emails;
  • As an effect of individual ending up on a source that hosts a malicious software application;

As quickly as the Trojan is effectively infused, it will certainly either cipher the data on the target’s computer or stop the gadget from operating in a proper manner – while likewise putting a ransom note that states the requirement for the targets to impact the repayment for the objective of decrypting the records or restoring the file system back to the first problem. In most instances, the ransom money note will certainly show up when the customer restarts the PC after the system has actually already been damaged.

Backdoor:Win32/Tofsee.B circulation channels.

In different corners of the globe, Backdoor:Win32/Tofsee.B expands by jumps and also bounds. However, the ransom money notes and methods of extorting the ransom money amount may differ depending upon specific local (regional) setups. The ransom notes and tricks of extorting the ransom money amount might differ depending on certain regional (local) setups.

Ransomware injection

As an example:

    Faulty notifies about unlicensed software.

    In particular areas, the Trojans frequently wrongfully report having actually discovered some unlicensed applications enabled on the target’s device. The sharp after that requires the user to pay the ransom money.

    Faulty declarations regarding prohibited content.

    In nations where software application piracy is much less preferred, this technique is not as efficient for the cyber scams. Alternatively, the Backdoor:Win32/Tofsee.B popup alert might wrongly declare to be stemming from a law enforcement establishment and will certainly report having located child pornography or various other prohibited information on the device.

    Backdoor:Win32/Tofsee.B popup alert may falsely assert to be acquiring from a law enforcement establishment as well as will certainly report having located child pornography or various other prohibited information on the tool. The alert will likewise contain a need for the customer to pay the ransom.

Technical details

File Info:

crc32: ADA06FF4
md5: 7419534c5e2813ee2e06587fe32bdef4
name: 7419534C5E2813EE2E06587FE32BDEF4.mlw
sha1: 47182e4627b7eaa97ca7431c13cc1385768edadb
sha256: 8bb67762ae0f210bd3603a9fa377392afc30709d2a4631d27c49a52fb3d0c9d3
sha512: ffbb1ad80bb7111f0c7e4f61169095579eb373b092350a268faaeccce9b726441400d7b5af43b17ece721e15c95c9aceb5486d34d31ba718e9015c9ec1555506
ssdeep: 1536:6Th3/sK2aRp6yyuyZRx8VrPwHnuWnrdubf78FxTtf:ih3/h2aqyyuynxYPajnymZ1
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Backdoor:Win32/Tofsee.B also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.Spambot
Cynet Malicious (score: 100)
ALYac Gen:Trojan.Heur.FU.emY@a8pwU8n
Cylance Unsafe
Zillya Trojan.Nulprot.Win32.96
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Worm:Win32/Nulprot.586a358f
K7GW Trojan ( 000172881 )
K7AntiVirus Trojan ( 000172881 )
Cyren W32/STZ_like!Generic
ESET-NOD32 a variant of Win32/Nulprot
APEX Malicious
Avast Win32:Nulprot [Trj]
ClamAV Win.Trojan.Nulprot-11
Kaspersky Email-Worm.Win32.Nulprot.f
BitDefender Gen:Trojan.Heur.FU.emY@a8pwU8n
MicroWorld-eScan Gen:Trojan.Heur.FU.emY@a8pwU8n
Tencent Malware.Win32.Gencirc.11495db8
Ad-Aware Gen:Trojan.Heur.FU.emY@a8pwU8n
Sophos ML/PE-A
Comodo Malware@#3uu1roiv8t29y
BitDefenderTheta AI:Packer.81749A691E
VIPRE Trojan.Win32.Generic!BT
TrendMicro WORM_NULPROT.F
McAfee-GW-Edition BehavesLike.Win32.VirRansom.kc
FireEye Generic.mg.7419534c5e2813ee
Emsisoft Gen:Trojan.Heur.FU.emY@a8pwU8n (B)
SentinelOne Static AI – Malicious PE
Jiangmin Worm/Sramota.aou
Avira TR/Crypt.XPACK.Gen
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Backdoor:Win32/Tofsee.B
Arcabit Trojan.Heur.FU.E7AA2A
AegisLab Worm.Win32.Nulprot.o!c
GData Gen:Trojan.Heur.FU.emY@a8pwU8n
AhnLab-V3 Trojan/Win32.Tibs.C140251
McAfee Artemis!7419534C5E28
MAX malware (ai score=100)
VBA32 BScope.Trojan.MulDrop
Panda Trj/Tibs.AC
TrendMicro-HouseCall WORM_NULPROT.F
Rising Worm.Mail.Win32.Nulprot.f (CLOUD)
Yandex Trojan.GenAsa!tm3AH9CLslE
Ikarus Trojan.Win32.Nulprot
Fortinet W32/Nulprot.F@mm
AVG Win32:Nulprot [Trj]
Paloalto generic.ml
Qihoo-360 Win32/Trojan.beb

How to remove Backdoor:Win32/Tofsee.B 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 Backdoor:Win32/Tofsee.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 Backdoor:Win32/Tofsee.B 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/products/

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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