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

What is Trojan-Ransom.Win32.Blocker.tuf infection?

In this article you will certainly find about the definition of Trojan-Ransom.Win32.Blocker.tuf and its negative impact on your computer system. Such ransomware are a form of malware that is specified by on the internet fraudulences to require paying the ransom money by a target.

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In the majority of the instances, Trojan-Ransom.Win32.Blocker.tuf virus will certainly advise its sufferers to initiate funds transfer for the objective of counteracting the amendments that the Trojan infection has presented to the target’s device.

Trojan-Ransom.Win32.Blocker.tuf Summary

These modifications can be as complies with:

  • 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.
  • 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.
  • Unconventionial binary language: Russian;
  • Unconventionial language used in binary resources: Russian;
  • 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;
  • Sniffs keystrokes;
  • Installs an hook procedure to monitor for mouse events;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • 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 modify browser security settings;
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the target’s hard drive — so the target can no longer make use of the information;
  • Preventing normal accessibility 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 Ransom:Win32/Blocker.f0fea679


One of the most common networks whereby Trojan-Ransom.Win32.Blocker.tuf are injected are:

  • By means of phishing emails;
  • As a repercussion of individual ending up on a resource that organizes a harmful software program;

As soon as the Trojan is effectively infused, it will certainly either cipher the information on the victim’s PC or avoid the gadget from operating in an appropriate fashion – while additionally placing a ransom money note that points out the requirement for the targets to impact the settlement for the function of decrypting the records or recovering the data system back to the first problem. In the majority of circumstances, the ransom money note will certainly turn up when the client reboots the COMPUTER after the system has currently been harmed.

Trojan-Ransom.Win32.Blocker.tuf distribution networks.

In numerous corners of the world, Trojan-Ransom.Win32.Blocker.tuf grows by jumps and also bounds. Nonetheless, the ransom money notes and also tricks of obtaining the ransom money amount might vary depending upon certain neighborhood (local) settings. The ransom money notes and tricks of extorting the ransom quantity may vary depending on certain neighborhood (local) setups.

Ransomware injection

As an example:

    Faulty alerts regarding unlicensed software program.

    In specific areas, the Trojans frequently wrongfully report having actually spotted some unlicensed applications enabled on the victim’s tool. The alert then demands the individual to pay the ransom.

    Faulty statements about illegal content.

    In countries where software program piracy is less preferred, this method is not as reliable for the cyber fraudulences. Additionally, the Trojan-Ransom.Win32.Blocker.tuf popup alert may incorrectly assert to be originating from a police establishment as well as will certainly report having situated kid porn or various other illegal information on the device.

    Trojan-Ransom.Win32.Blocker.tuf popup alert might falsely claim to be acquiring from a law enforcement establishment as well as will report having located kid pornography or other prohibited information on the device. The alert will likewise include a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 0C558C64
md5: 0d8b907718e82f16b59e9b1cc17fea39
name: 0D8B907718E82F16B59E9B1CC17FEA39.mlw
sha1: 12eede467de8675b30c71e85c156c629e04fe8ab
sha256: fd994b4e0d1f4d192cf44fe752673ac6dbd5f3f91f140706f2d03fea11abda42
sha512: a26395acf2f4206d137f1a978add00d67f02f264a43ae30aa1d637be4e62c9cd3b19ef55ef7ed7763d2910debbc19e5213abe8e96e11eeabb1035e9091c37089
ssdeep: 1536:ioLKOYRcc2I5i69vVOVsCl9Vadg0xVlj4GF+yXcgjvtsmIQIHvqr9PxDtPOc:nLKOYRtNiCGJuVlMtyXXKJvHu9ZDtPOc
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9 x41ax43ex440x43fx43ex440x430x446x438x44f x41cx430x439x43ax440x43ex441x43ex444x442. x412x441x435 x43fx440x430x432x430 x437x430x449x438x449x435x43dx44b.
InternalName: WPABALN.EXE
FileVersion: 5.1.2600.5512 (xpsp.080413-2113)
CompanyName: x41ax43ex440x43fx43ex440x430x446x438x44f x41cx430x439x43ax440x43ex441x43ex444x442
ProductName: x41ex43fx435x440x430x446x438x43ex43dx43dx430x44f x441x438x441x442x435x43cx430 Microsoftxae Windowsxae
ProductVersion: 5.1.2600.5512
FileDescription: x412x441x43fx43bx44bx432x430x44ex449x435x435 x43dx430x43fx43ex43cx438x43dx430x43dx438x435 x430x43ax442x438x432x430x446x438x438
OriginalFilename: WPABALN.EXE
Translation: 0x0419 0x04b0

Trojan-Ransom.Win32.Blocker.tuf also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
DrWeb Trojan.KeyLogger.16779
Cynet Malicious (score: 100)
ALYac Gen:Heur.Mint.Titirez.jq1@p8UC!Jcc
Cylance Unsafe
Zillya Trojan.Blocker.Win32.1352
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_90% (D)
Alibaba Ransom:Win32/Blocker.f0fea679
K7GW Trojan ( 0040f1aa1 )
K7AntiVirus Trojan ( 0040f1aa1 )
Baidu Win32.Adware.Kryptik.b
Cyren W32/Trojan.NULY-0962
Symantec Packed.Generic.406
ESET-NOD32 Win32/LockScreen.AMK
APEX Malicious
Avast Win32:Agent-AQST [Trj]
Kaspersky Trojan-Ransom.Win32.Blocker.tuf
BitDefender Gen:Heur.Mint.Titirez.jq1@p8UC!Jcc
NANO-Antivirus Trojan.Win32.KeyLogger.behnvw
MicroWorld-eScan Gen:Heur.Mint.Titirez.jq1@p8UC!Jcc
Tencent Win32.Trojan.Blocker.Hzf
Ad-Aware Gen:Heur.Mint.Titirez.jq1@p8UC!Jcc
Sophos Mal/Generic-S
Comodo Malware@#2p4phov3rryk1
BitDefenderTheta Gen:NN.ZexaF.34688.jq1@a8UC!Jcc
VIPRE Trojan.Win32.Zbot.dhn (v)
McAfee-GW-Edition PWS-Zbot.gen.alu
Emsisoft Gen:Heur.Mint.Titirez.jq1@p8UC!Jcc (B)
SentinelOne Static AI – Suspicious PE
Jiangmin Trojan.Blocker.ouc
Webroot W32.Trojan.Gen
Avira BDS/ZeroAccess.Gen8
eGambit Generic.Malware
Kingsoft Win32.Troj.Undef.(kcloud)
Microsoft Ransom:Win32/Reveton.O
AegisLab Trojan.Win32.Generic.lw2L
GData Gen:Heur.Mint.Titirez.jq1@p8UC!Jcc
TACHYON Trojan/W32.Blocker.148635
AhnLab-V3 Trojan/Win32.Tepfer.R54517
Acronis suspicious
McAfee PWS-Zbot.gen.aua
MAX malware (ai score=100)
VBA32 Trojan.Hide.Heur
Panda Trj/Genetic.gen
Rising Ransom.Blocker!8.12A (CLOUD)
Ikarus Trojan-Downloader.Win32.Cbeplay
MaxSecure Trojan.Malware.5043028.susgen
Fortinet W32/Lockscreen.LOA!tr
AVG Win32:Agent-AQST [Trj]

How to remove Trojan-Ransom.Win32.Blocker.tuf ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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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-Ransom.Win32.Blocker.tuf 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 Trojan-Ransom.Win32.Blocker.tuf you can always ask me in the comments for getting help.

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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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