TrojanDownloader:Win32/Dofoil

What is TrojanDownloader:Win32/Dofoil infection?

In this short article you will locate regarding the meaning of TrojanDownloader:Win32/Dofoil and also its negative influence on your computer. Such ransomware are a kind of malware that is elaborated by on-line frauds to demand paying the ransom money by a sufferer.

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Most of the situations, TrojanDownloader:Win32/Dofoil virus will advise its victims to launch funds transfer for the function of counteracting the changes that the Trojan infection has introduced to the victim’s gadget.

TrojanDownloader:Win32/Dofoil 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);
  • Compression (or decompression);
  • 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.
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Performs some HTTP requests;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • The executable is compressed using UPX;
  • Executed a process and injected code into it, probably while unpacking;
  • Code injection with CreateRemoteThread in a remote process;
  • Tries to unhook or modify Windows functions monitored by Cuckoo;
  • A system process is generating network traffic likely as a result of process injection;
  • 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 hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Creates a slightly modified copy of itself;
  • Ciphering the documents located on the victim’s hard drive — so the victim can no more utilize the data;
  • 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.
Similar behavior
Related domains
spaines.pw Trj/Ransom.BH

TrojanDownloader:Win32/Dofoil

One of the most common networks whereby TrojanDownloader:Win32/Dofoil 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 a repercussion of individual winding up on a source that hosts a harmful software application;

As quickly as the Trojan is effectively infused, it will either cipher the information on the target’s PC or protect against the gadget from operating in a proper fashion – while also placing a ransom note that states the demand for the sufferers to effect the payment for the function of decrypting the papers or bring back the file system back to the first condition. In the majority of instances, the ransom money note will certainly turn up when the client restarts the PC after the system has currently been harmed.

TrojanDownloader:Win32/Dofoil circulation channels.

In different corners of the world, TrojanDownloader:Win32/Dofoil grows by jumps and bounds. However, the ransom money notes as well as methods of extorting the ransom money quantity may vary relying on certain regional (local) settings. The ransom money notes and methods of extorting the ransom amount may vary depending on certain neighborhood (local) setups.

Ransomware injection

For instance:

    Faulty notifies regarding unlicensed software program.

    In specific locations, the Trojans frequently wrongfully report having actually found some unlicensed applications enabled on the target’s gadget. The alert after that requires the individual to pay the ransom.

    Faulty statements regarding prohibited material.

    In nations where software application piracy is less prominent, this method is not as effective for the cyber frauds. Conversely, the TrojanDownloader:Win32/Dofoil popup alert may incorrectly claim to be deriving from a police institution and will certainly report having located kid porn or other illegal data on the gadget.

    TrojanDownloader:Win32/Dofoil popup alert may wrongly claim to be obtaining from a regulation enforcement establishment as well as will certainly report having situated youngster porn or various other prohibited data on the tool. The alert will similarly contain a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 6C5CBE56
md5: 183bb106b8434e3746e5512d2107f00a
name: 183BB106B8434E3746E5512D2107F00A.mlw
sha1: 21ce4b6217707e98109e307846eb3237193644fd
sha256: 2ffcfa757233ca9b0c62b6ef2f69e64f290176b11c0813b461a496c02949a0ed
sha512: 3abc7328242bc06041dd5a32f4466dbddcbeb8bdf31c7607530e0e486e3ae611e898a5bac69431e1c8ec79a3356472ecad9d6645a096bdf12d070a47e679d84f
ssdeep: 1536:ujOf6GKZhOHY1zCi1hFdNYqjhOrmK6o84:6qJ0NFdvjQqpo84
type: PE32 executable (console) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright: Copyright xa9 2012
InternalName: java
FileVersion: 6.0.310.5
Full Version: 1.6.0_31-b05
CompanyName: Sun Microsystems, Inc.
ProductName: Java(TM) Platform SE 6 U31
ProductVersion: 6.0.310.5
FileDescription: Java(TM) Platform SE binary
OriginalFilename: java.exe
Translation: 0x0000 0x04b0

TrojanDownloader:Win32/Dofoil also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Tinba.657
MicroWorld-eScan Trojan.Downloader.JUSI
FireEye Generic.mg.183bb106b8434e37
Qihoo-360 HEUR/QVM19.1.38DF.Malware.Gen
ALYac Trojan.Downloader.JUSI
Cylance Unsafe
VIPRE Packer.NSAnti.Gen (v)
Sangfor Malware
K7AntiVirus Trojan ( 004b6a801 )
BitDefender Trojan.Downloader.JUSI
K7GW Trojan ( 004b6a801 )
BitDefenderTheta Gen:NN.ZexaF.34590.dmLfaOrOlah
Cyren W32/S-bd04db17!Eldorado
Symantec ML.Attribute.HighConfidence
Zoner Trojan.Win32.82560
ClamAV Win.Malware.Tinba-7081431-0
Kaspersky HEUR:Trojan.Win32.Generic
NANO-Antivirus Trojan.Win32.Tinba.epyuvs
Ad-Aware Trojan.Downloader.JUSI
Emsisoft Trojan.Downloader.JUSI (B)
Comodo TrojWare.Win32.Tinba.CZFV@7n4q7q
F-Secure Heuristic.HEUR/AGEN.1120554
Invincea ML/PE-A + Mal/Zbot-EZ
McAfee-GW-Edition BehavesLike.Win32.Generic.kc
Sophos Mal/Zbot-EZ
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Generic.dvxtx
Webroot W32.Trojan.Gen
Avira HEUR/AGEN.1120554
MAX malware (ai score=82)
Antiy-AVL Trojan/Win32.Wacatac
Microsoft TrojanDownloader:Win32/Dofoil
Arcabit Trojan.Downloader.JUSI
SUPERAntiSpyware Trojan.Agent/Gen-Downloader
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.Downloader.JUSI
Cynet Malicious (score: 100)
AhnLab-V3 Backdoor/Win32.Hupigon.C3032550
McAfee GenericRXAA-AA!183BB106B843
VBA32 Trojan.Tinba
Malwarebytes Backdoor.Agent.JV
APEX Malicious
ESET-NOD32 Win32/Tinba.BF
Rising Backdoor.Hupigon!8.B57 (TFE:5:1vezCi86UPT)
Yandex Trojan.GenAsa!sm+UtM3od70
Ikarus Trojan.Win32.Crypt
eGambit Unsafe.AI_Score_92%
Fortinet W32/Tinba.BF!tr
AVG Win32:Evo-gen [Susp]
Panda Trj/Ransom.BH
CrowdStrike win/malicious_confidence_60% (D)
MaxSecure Trojan.Malware.300983.susgen

How to remove TrojanDownloader:Win32/Dofoil 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 TrojanDownloader:Win32/Dofoil 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove TrojanDownloader:Win32/Dofoil 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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