Trojan-Ransom.Win32.Blocker.havt

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

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

In this post you will locate about the meaning of Trojan-Ransom.Win32.Blocker.havt as well as its adverse effect on your computer. Such ransomware are a type of malware that is clarified by online frauds to require paying the ransom by a sufferer.

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Most of the situations, Trojan-Ransom.Win32.Blocker.havt virus will certainly instruct its victims to launch funds move for the purpose of counteracting the modifications that the Trojan infection has presented to the target’s gadget.

Trojan-Ransom.Win32.Blocker.havt Summary

These adjustments can be as adheres to:

  • Injection (inter-process);
  • Possible date expiration check, exits too soon after checking local time;
  • 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.
  • 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;
  • Uses Windows utilities for basic functionality;
  • 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!
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • A potential decoy document was displayed to the user;
  • 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
  • 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.
  • Ciphering the documents situated on the sufferer’s hard disk — so the sufferer can no more make use of the data;
  • Preventing regular access 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.xyzWin32/Ransom.Blocker.HwsBqhcA
a.tomx.xyzWin32/Ransom.Blocker.HwsBqhcA

Trojan-Ransom.Win32.Blocker.havt

One of the most normal networks through which Trojan-Ransom.Win32.Blocker.havt Ransomware are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of user winding up on a source that organizes a harmful software application;

As soon as the Trojan is successfully injected, it will either cipher the information on the victim’s computer or avoid the gadget from operating in an appropriate fashion – while also positioning a ransom money note that states the requirement for the targets to impact the payment for the objective of decrypting the records or bring back the documents system back to the initial problem. In most instances, the ransom money note will come up when the customer reboots the PC after the system has currently been harmed.

Trojan-Ransom.Win32.Blocker.havt circulation networks.

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

Ransomware injection

As an example:

    Faulty signals about unlicensed software program.

    In specific locations, the Trojans usually wrongfully report having identified some unlicensed applications enabled on the target’s tool. The sharp after that requires the customer to pay the ransom money.

    Faulty statements concerning prohibited material.

    In nations where software application piracy is much less preferred, this approach is not as efficient for the cyber fraudulences. Additionally, the Trojan-Ransom.Win32.Blocker.havt popup alert might incorrectly claim to be originating from a police establishment as well as will certainly report having situated youngster pornography or various other prohibited information on the gadget.

    Trojan-Ransom.Win32.Blocker.havt popup alert may falsely claim to be deriving from a regulation enforcement organization and also will report having located kid pornography or other unlawful information on the device. The alert will likewise consist of a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: B159ED1B
md5: efe54df820fa8434cf14a5a8f55f52b7
name: EFE54DF820FA8434CF14A5A8F55F52B7.mlw
sha1: 602c97a9a3e7771fca50506b79b7d9e8d94978eb
sha256: 3374cbbcfb1c0bd08c267b965ec2c40ddfa7f32ef36e850e18c61c8a0caa64b8
sha512: bc138267336dfeb7365b3e68333a46a22c23d6980dce44f70aae78c56c093b06c91690400a1c2756e8df403863113b3424869eea213e3a7149ead80d5131d642
ssdeep: 24576:eTV2EmIwmAtnrzLznRg7AUfTwSN/VLRcN3qnC39eg/3q89X:0UEH8trPzn+7AULwSrlK3V39eg3q89
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

LegalCopyright:
InternalName:
FileVersion: 1.1.21.03
ProductName:
ProductVersion: 1.1.21.03
FileDescription:
OriginalFilename:
Translation: 0x0409 0x04b0

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

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
DrWebTrojan.DownLoader23.5433
MicroWorld-eScanTrojan.GenericKD.31115756
Qihoo-360Win32/Ransom.Blocker.HwsBqhcA
McAfeeArtemis!EFE54DF820FA
MalwarebytesMalware.Heuristic.1003
VIPRETrojan.Win32.Generic!BT
AegisLabTrojan.Win32.Blocker.j!c
SangforRansom.Win32.Blocker.8
K7AntiVirusRiskware ( 0040eff71 )
BitDefenderTrojan.GenericKD.31115756
K7GWRiskware ( 0040eff71 )
Cybereasonmalicious.820fa8
ArcabitTrojan.Generic.D1DAC9EC
SymantecTrojan Horse
ESET-NOD32VBS/Agent.NDW
Paloaltogeneric.ml
ClamAVWin.Trojan.Generic-42
KasperskyTrojan-Ransom.Win32.Blocker.havt
AlibabaRansom:Win32/Blocker.609bfc6a
NANO-AntivirusTrojan.Win32.Blocker.dserej
TencentWin32.Trojan.Blocker.Aqgj
Ad-AwareTrojan.GenericKD.31115756
SophosMal/Generic-S
ComodoMalware@#214n8623n5tjz
ZillyaTrojan.Blocker.Win32.28337
McAfee-GW-EditionBehavesLike.Win32.TrojanAitInject.cc
FireEyeGeneric.mg.efe54df820fa8434
EmsisoftTrojan.GenericKD.31115756 (B)
IkarusWorm.VBS.Agent
JiangminTrojan/Blocker.mvv
MAXmalware (ai score=98)
Antiy-AVLTrojan[Ransom]/Win32.Blocker
KingsoftWin32.Troj.Undef.(kcloud)
MicrosoftTrojan:Win32/Wacatac.B!ml
ZoneAlarmTrojan-Ransom.Win32.Blocker.havt
GDataTrojan.GenericKD.31115756
CynetMalicious (score: 90)
VBA32Backdoor.Androm
ALYacTrojan.GenericKD.31115756
CylanceUnsafe
PandaTrj/CI.A
APEXMalicious
RisingMalware.Heuristic!ET#84% (CLOUD)
YandexTrojan.GenAsa!iaZ7yUdnHcI
FortinetW32/Blocker.HAVT!tr
AVGWin32:Malware-gen
AvastWin32:Malware-gen

How to remove Trojan-Ransom.Win32.Blocker.havt 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.havt 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.havt 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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