Bulz.120346

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

What is Bulz.120346 infection?

In this post you will certainly discover about the meaning of Bulz.120346 as well as its negative impact on your computer. Such ransomware are a type of malware that is clarified by online frauds to require paying the ransom money by a victim.

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Most of the instances, Bulz.120346 ransomware will certainly instruct its targets to initiate funds transfer for the objective of reducing the effects of the amendments that the Trojan infection has actually introduced to the victim’s tool.

Bulz.120346 Summary

These alterations 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.
  • Enumerates user accounts on the system;
  • 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.
  • A process attempted to delay the analysis task.;
  • A process created a hidden window;
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Creates an excessive number of UDP connection attempts to external IP addresses;
  • 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 likely packed with VMProtect;
  • Looks up the external IP address;
  • Uses Windows utilities for basic functionality;
  • Attempts to delete volume shadow copies;
  • 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!
  • Modifies boot configuration settings;
  • Exhibits behavior characteristic of Cerber ransomware;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Mimics the file times of a Windows system file;
  • 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.
  • EternalBlue behavior. Allows cyber threat actors to remotely execute arbitrary code and gain access to a network by sending specially crafted packets.

    This is has made EternalBlue trick popular with various malware, such as Trickbot, a modular banking trojan, as well as CoinMiner and WannaMine, crypto miners that use the EternalBlue exploit in order to gain access to computing power to mine cryptocurrencies.

  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Generates some ICMP traffic;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files situated on the target’s hard disk drive — so the victim can no longer use the data;
  • Preventing regular access to the victim’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
ipinfo.io Trojan-Ransom.Win32.Zerber.fezm

Bulz.120346

One of the most typical networks whereby Bulz.120346 Trojans are injected are:

  • By means of phishing e-mails;
  • As a consequence of customer ending up on a source that hosts a malicious software;

As quickly as the Trojan is effectively infused, it will either cipher the information on the victim’s computer or prevent the gadget from operating in a proper fashion – while also positioning a ransom note that states the need for the sufferers to effect the payment for the purpose of decrypting the papers or recovering the documents system back to the preliminary condition. In the majority of instances, the ransom note will show up when the customer restarts the PC after the system has already been damaged.

Bulz.120346 distribution networks.

In different corners of the globe, Bulz.120346 expands by jumps and also bounds. However, the ransom money notes and also methods of extorting the ransom amount might vary depending on certain regional (regional) settings. The ransom money notes and also methods of obtaining the ransom money quantity might vary depending on specific local (regional) setups.

Ransomware injection

As an example:

    Faulty informs regarding unlicensed software.

    In certain areas, the Trojans frequently wrongfully report having actually spotted some unlicensed applications enabled on the sufferer’s tool. The alert then requires the customer to pay the ransom.

    Faulty statements about prohibited content.

    In countries where software piracy is less preferred, this approach is not as effective for the cyber fraudulences. Additionally, the Bulz.120346 popup alert may falsely claim to be originating from a police organization as well as will certainly report having located kid porn or various other prohibited data on the gadget.

    Bulz.120346 popup alert may wrongly declare to be deriving from a legislation enforcement establishment and will certainly report having located kid pornography or other unlawful data on the gadget. The alert will similarly include a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: 40ADAB03
md5: a6f5c32643b73da1551006276b5a250f
name: A6F5C32643B73DA1551006276B5A250F.mlw
sha1: 74b894e56e62169500aec6601462dcd8ea4d4e68
sha256: 4e670c0c7203c78a1d8ab51ecbb1c23765b89b74f76e33ab521aba32cf7df528
sha512: 46e7900ddf116965e0faae91d21a6a53efdf5db0b61056bfc47607ee69451c2990e59a9c101319b2696584a108ca253b08a2ebc5eb570b2fb2aaf46d6f074c46
ssdeep: 3072:FFWxI5uFQDnnadgwZhq7O+qL8W/6JlRDrHr8h+3sjGJ:7EaGd3yZqL8WSr8h+3OG
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Gentlemen
InternalName: grown
FileVersion: 5.4
CompanyName: Gentlemen
ProductName: grown robustest sye
ProductVersion: 5.4
FileDescription: grown chrysopid
OriginalFilename: grown.exe
Translation: 0x0409 0x04b0

Bulz.120346 also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Bulz.120346
FireEye Generic.mg.a6f5c32643b73da1
ALYac Gen:Variant.Bulz.120346
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 0048cbe01 )
BitDefender Gen:Variant.Bulz.120346
K7GW Trojan ( 0048cbe01 )
Cybereason malicious.643b73
BitDefenderTheta Gen:NN.ZexaF.34590.iu0@a4Qd8mfi
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.EYLT
APEX Malicious
Avast Win32:Evo-gen [Susp]
Kaspersky Trojan-Ransom.Win32.Zerber.fezm
Alibaba Ransom:Win32/Zerber.737f5395
NANO-Antivirus Trojan.Win32.Zerber.evdtes
AegisLab Trojan.Win32.Zerber.4!c
Rising Trojan.Kryptik!8.8 (CLOUD)
Ad-Aware Gen:Variant.Bulz.120346
Sophos ML/PE-A + Mal/Cerber-C
Comodo Malware@#2738byd2dg3x5
DrWeb Trojan.Encoder.4691
Zillya Trojan.Kryptik.Win32.1528613
McAfee-GW-Edition Ransomware-Cerber.a!
Emsisoft Gen:Variant.Bulz.120346 (B)
SentinelOne Static AI – Malicious PE
Avira HEUR/AGEN.1110501
MAX malware (ai score=100)
Microsoft Ransom:Win32/Cerber.A
Arcabit Trojan.Bulz.D1D61A
ZoneAlarm Trojan-Ransom.Win32.Zerber.fezm
GData Gen:Variant.Bulz.120346
Cynet Malicious (score: 100)
McAfee Ransomware-Cerber.a!
Malwarebytes Ransom.Cerber
Panda Trj/GdSda.A
Tencent Win32.Trojan.Zerber.Lpld
Yandex Trojan.Zerber!14+XJeMMCaY
Ikarus Trojan.Win32.Crypt
Fortinet W32/Kryptik.EYKI!tr
AVG Win32:Evo-gen [Susp]
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Win32/Ransom.Cerber.HxQBdOQA

How to remove Bulz.120346 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 Bulz.120346 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 Bulz.120346 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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