Trojan-Ransom.Win32.Blocker.kwzf

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

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

In this article you will certainly discover concerning the meaning of Trojan-Ransom.Win32.Blocker.kwzf and its adverse influence on your computer system. Such ransomware are a form of malware that is clarified by on-line frauds to require paying the ransom by a victim.

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Most of the situations, Trojan-Ransom.Win32.Blocker.kwzf ransomware will advise its victims to start funds transfer for the objective of counteracting the changes that the Trojan infection has actually presented to the victim’s tool.

Trojan-Ransom.Win32.Blocker.kwzf Summary

These adjustments 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers located on the target’s hard disk drive — so the victim can no longer make use of the information;
  • 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.
Similar behavior
Related domains
z.whorecord.xyz Trojan-Ransom.Win32.Blocker.kwzf
a.tomx.xyz Trojan-Ransom.Win32.Blocker.kwzf

Trojan-Ransom.Win32.Blocker.kwzf

The most common networks whereby Trojan-Ransom.Win32.Blocker.kwzf are injected are:

  • By means of phishing emails;
  • As a consequence of customer winding up on a resource that organizes a destructive software;

As soon as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s PC or avoid the tool from functioning in a proper fashion – while additionally positioning a ransom money note that points out the requirement for the sufferers to impact the repayment for the objective of decrypting the files or restoring the documents system back to the first problem. In a lot of instances, the ransom money note will certainly show up when the client restarts the PC after the system has currently been damaged.

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

In different corners of the world, Trojan-Ransom.Win32.Blocker.kwzf grows by leaps and also bounds. However, the ransom money notes and also techniques of obtaining the ransom amount may differ relying on certain neighborhood (local) setups. The ransom notes and also tricks of obtaining the ransom amount might vary depending on specific neighborhood (regional) settings.

Ransomware injection

For example:

    Faulty alerts concerning unlicensed software program.

    In specific locations, the Trojans typically wrongfully report having spotted some unlicensed applications allowed on the target’s device. The alert after that demands the individual to pay the ransom.

    Faulty declarations concerning illegal web content.

    In countries where software program piracy is much less prominent, this approach is not as efficient for the cyber frauds. Alternatively, the Trojan-Ransom.Win32.Blocker.kwzf popup alert might wrongly claim to be deriving from a law enforcement institution and will certainly report having situated youngster pornography or various other unlawful data on the device.

    Trojan-Ransom.Win32.Blocker.kwzf popup alert might wrongly claim to be deriving from a regulation enforcement establishment and will report having located child porn or various other prohibited information on the device. The alert will in a similar way have a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: 4EE9267E
md5: 947a0bcbfabf9949fbd29da43e3c8565
name: 947A0BCBFABF9949FBD29DA43E3C8565.mlw
sha1: b387a703df7655f27c828b8dc41bebb0d1548c8b
sha256: 4e8e6ab526b84721f952f78a1328c391c478713ea5b593960d90a63b2dcf046c
sha512: 6dd17afc73e3575cc505046f1786ec8460da0fb79b080df2cbdbaaf8bf03bf1cf2a50c409fd69809936b5375f025671639a2e9bc22fa2f76810dea54fde47d8f
ssdeep: 6144:2dSK04ETTZ+4TBpvjLCQiuAF7Td1j8gAX7EV2fC:2oL4EnU4T/vjLXAF7Rd8pX7E+C
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x0000 0x04b0
LegalCopyright: Copyright xa9 2018
Assembly Version: 1.0.0.0
InternalName: W.exe
FileVersion: 1.0.0.0
ProductName: W
ProductVersion: 1.0.0.0
FileDescription: W
OriginalFilename: W.exe

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

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
FireEye Generic.mg.947a0bcbfabf9949
McAfee Artemis!947A0BCBFABF
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 004b89791 )
K7GW Trojan ( 004b89791 )
CrowdStrike win/malicious_confidence_80% (D)
Cyren W32/Symmi.O.gen!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Paloalto generic.ml
Kaspersky Trojan-Ransom.Win32.Blocker.kwzf
NANO-Antivirus Trojan.Win32.Blocker.ezbygq
Rising Ransom.Blocker!8.12A (CLOUD)
Sophos Mal/Generic-S
Comodo Malware@#f5lw6lf6o0tl
F-Secure Trojan.TR/Blocker.pegov
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
SentinelOne Static AI – Suspicious PE
Avira TR/Blocker.pegov
MAX malware (ai score=97)
Antiy-AVL Trojan[Ransom]/Win32.Blocker
Microsoft Trojan:Win32/Occamy.B
ZoneAlarm Trojan-Ransom.Win32.Blocker.kwzf
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/RL.Generic.R247093
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34590.pq0@ay!aWDb
TACHYON Backdoor/W32.Xtreme.252416
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/CI.A
Tencent Win32.Trojan.Blocker.Hssg
Yandex Trojan.Blocker!V+BP6v/p63E
Ikarus Trojan.MSIL.Bladabindi
eGambit Unsafe.AI_Score_99%
Fortinet W32/Blocker.KWZF!tr
AVG Win32:Malware-gen
Cybereason malicious.3df765
Avast Win32:Malware-gen
Qihoo-360 Win32/Trojan.095

How to remove Trojan-Ransom.Win32.Blocker.kwzf virus?

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.kwzf 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 Trojan-Ransom.Win32.Blocker.kwzf 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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