Backdoor.Win32.Tofsee.amdh

What is Backdoor.Win32.Tofsee.amdh infection?

In this short article you will certainly discover concerning the definition of Backdoor.Win32.Tofsee.amdh as well as its negative effect on your computer system. Such ransomware are a kind of malware that is clarified by on the internet fraudulences to demand paying the ransom money by a target.

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Most of the situations, Backdoor.Win32.Tofsee.amdh ransomware will certainly advise its sufferers to launch funds move for the objective of counteracting the changes that the Trojan infection has introduced to the target’s device.

Backdoor.Win32.Tofsee.amdh 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.
  • 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.
  • 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;
  • Enumerates services, possibly for anti-virtualization;
  • Deletes its original binary from disk;
  • Executed a process and injected code into it, probably while unpacking;
  • 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 interact with an Alternate Data Stream (ADS);
  • Ciphering the documents situated on the sufferer’s hard disk — so the victim can no longer use the data;
  • Preventing routine accessibility 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.

Backdoor.Win32.Tofsee.amdh

The most normal channels through which Backdoor.Win32.Tofsee.amdh Ransomware are infused are:

  • By means of phishing emails;
  • As a repercussion of individual winding up on a source that organizes a destructive software program;

As quickly as the Trojan is successfully infused, it will certainly either cipher the data on the victim’s computer or protect against the gadget from functioning in a proper way – while also putting a ransom note that mentions the demand for the victims to effect the settlement for the purpose of decrypting the documents or restoring the data system back to the first condition. In the majority of instances, the ransom note will show up when the customer reboots the PC after the system has currently been harmed.

Backdoor.Win32.Tofsee.amdh circulation channels.

In different edges of the world, Backdoor.Win32.Tofsee.amdh expands by leaps and bounds. Nonetheless, the ransom notes and tricks of obtaining the ransom amount might differ relying on specific local (local) setups. The ransom notes and also methods of obtaining the ransom amount might differ depending on certain local (local) settings.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software program.

    In certain locations, the Trojans usually wrongfully report having detected some unlicensed applications made it possible for on the victim’s device. The sharp then demands the individual to pay the ransom money.

    Faulty statements regarding illegal web content.

    In nations where software application piracy is much less popular, this method is not as effective for the cyber frauds. Alternatively, the Backdoor.Win32.Tofsee.amdh popup alert may incorrectly declare to be stemming from a police institution and will report having situated child porn or various other unlawful information on the device.

    Backdoor.Win32.Tofsee.amdh popup alert may incorrectly declare to be obtaining from a regulation enforcement organization and will report having located child porn or various other prohibited information on the tool. The alert will in a similar way contain a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: DD903AEF
md5: 82652d6a1db5a13eaeb9a633db0a1b39
name: 82652D6A1DB5A13EAEB9A633DB0A1B39.mlw
sha1: 775d78fae54e67a1ef55a1386551d93fbcd2d2d7
sha256: 7e25da0160ac9c14ea9d7e70465dd88dab79195725f8e7365c3421f6ab42821b
sha512: 4568fd44b5ec9ece169b5c3caca7df33025b9b5ceda5433acdd922b73fbe417aeec000a073f4dc32e19eb5c571a2e70ee96da684265ec30bbbaf464a1ba3c295
ssdeep: 1536:FWGCTnjiZbMHDIxXX5BwUCkSDkLhD0Nw4o74p3wKUwwy0qtp5or7YBbNk:/CTnWZEDIxXPwUCFkF0Nwt74NB0QT47
type: MS-DOS executable, MZ for MS-DOS

Version Info:

0: [No Data]

Backdoor.Win32.Tofsee.amdh also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 005157701 )
DrWeb Trojan.MulDrop8.59085
Cynet Malicious (score: 100)
ALYac Trojan.GenericKD.41040075
Cylance Unsafe
Zillya Backdoor.Tofsee.Win32.2028
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Backdoor:Win32/Tofsee.0eb025b2
K7GW Trojan ( 005157701 )
Cybereason malicious.a1db5a
ESET-NOD32 Win32/Tofsee.BJ
APEX Malicious
Avast FileRepMalware
ClamAV Win.Malware.Locky-7090183-0
Kaspersky Backdoor.Win32.Tofsee.amdh
BitDefender Trojan.GenericKD.41040075
NANO-Antivirus Trojan.Win32.Tofsee.fjxfqs
MicroWorld-eScan Trojan.GenericKD.41040075
Tencent Win32.Backdoor.Tofsee.Dypx
Ad-Aware Trojan.GenericKD.41040075
Sophos ML/PE-A + Mal/Elenoocka-E
Comodo TrojWare.Win32.Tofsee.BJ@79g6sc
BitDefenderTheta Gen:NN.ZexaF.34628.fmqaaqtsYrj
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CERBER.SMALY0
FireEye Generic.mg.82652d6a1db5a13e
Emsisoft Trojan.GenericKD.41040075 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Backdoor.Poison.aus
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1119282
Microsoft Backdoor:Win32/Tofsee.T
Arcabit Trojan.Generic.D27238CB
AegisLab Trojan.Win32.Tofsee.4!c
GData Trojan.GenericKD.41040075
AhnLab-V3 Malware/Win32.Ransom_cerber.C2839936
Acronis suspicious
McAfee Artemis!82652D6A1DB5
MAX malware (ai score=100)
VBA32 Trojan.FakeAV.01657
Malwarebytes Malware.Heuristic.1003
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom_CERBER.SMALY0
Rising Trojan.Kryptik!1.AE8C (CLOUD)
Ikarus PUA.Generic
Fortinet W32/Kryptik.GKNL!tr
AVG FileRepMalware
Paloalto generic.ml
Qihoo-360 Win32/Trojan.439

How to remove Backdoor.Win32.Tofsee.amdh 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 Backdoor.Win32.Tofsee.amdh 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.amdh 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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