Trojan:Win32/Bluether.B!dha

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

What is Trojan:Win32/Bluether.B!dha infection?

In this article you will discover about the meaning of Trojan:Win32/Bluether.B!dha and its negative influence on your computer system. Such ransomware are a kind of malware that is clarified by online frauds to demand paying the ransom by a target.

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Most of the cases, Trojan:Win32/Bluether.B!dha ransomware will advise its victims to initiate funds transfer for the objective of reducing the effects of the changes that the Trojan infection has actually presented to the sufferer’s device.

Trojan:Win32/Bluether.B!dha Summary

These alterations 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.
  • 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.
  • 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 copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the sufferer’s hard drive — so the victim can no more make use of the data;
  • Preventing regular 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
superapple.sendsmtp.comTrojan-Ransom.Blocker

Trojan:Win32/Bluether.B!dha

The most typical networks whereby Trojan:Win32/Bluether.B!dha are infused are:

  • By methods of phishing emails;
  • As an effect of user winding up on a source that hosts a harmful software application;

As soon as the Trojan is successfully injected, it will certainly either cipher the data on the target’s computer or stop the device from operating in an appropriate fashion – while likewise placing a ransom note that states the requirement for the victims to impact the repayment for the purpose of decrypting the files or bring back the data system back to the initial problem. In a lot of instances, the ransom note will certainly show up when the customer reboots the COMPUTER after the system has actually currently been harmed.

Trojan:Win32/Bluether.B!dha distribution networks.

In different corners of the world, Trojan:Win32/Bluether.B!dha grows by leaps as well as bounds. Nevertheless, the ransom money notes and also tricks of extorting the ransom money amount may vary depending on certain local (regional) settings. The ransom notes and tricks of obtaining the ransom quantity might differ depending on specific local (local) setups.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software.

    In specific areas, the Trojans commonly wrongfully report having actually detected some unlicensed applications made it possible for on the target’s device. The alert then requires the customer to pay the ransom.

    Faulty declarations concerning illegal content.

    In countries where software piracy is less prominent, this method is not as efficient for the cyber fraudulences. Alternatively, the Trojan:Win32/Bluether.B!dha popup alert may incorrectly declare to be stemming from a law enforcement organization and will report having located youngster pornography or other prohibited data on the device.

    Trojan:Win32/Bluether.B!dha popup alert may incorrectly declare to be acquiring from a legislation enforcement establishment as well as will report having located child porn or various other illegal data on the device. The alert will in a similar way include a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: 302A08A1
md5: 5b83dcd3f6615e9b18104088523eaaf3
name: 5B83DCD3F6615E9B18104088523EAAF3.mlw
sha1: 58ffb0c45970f5f74eaad42c0b80f533e95158f1
sha256: 6fcfd4865eca07cc7d13269396bc66f34260c4dc3cd3780b383be1160a72d037
sha512: c0c47871a60c5bef3e200d074bc108cc7832195a6948cf7038119a067b4bb6900dbf296b244b20361b89e3b2a2504e52b3506e4b6b64b5e366184a8927819247
ssdeep: 384:8cndpYCpSHIyU91s2+UygL8LEBx6Hd9VoZAWLpExFppZgtOYccwZiJI:8c7YCpqhi/ALEBxcdGAWdipZgUY3wY
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright:
InternalName: Bluthmon.exe
FileVersion: 3, 7, 5, 13
CompanyName: Mototech.co
PrivateBuild:
LegalTrademarks:
Comments:
ProductName: Bluetooth Monitor
SpecialBuild:
ProductVersion: 3, 7, 5, 13
FileDescription: Bluetooth Monitor
OriginalFilename: Motomon.exe
Translation: 0x0409 0x04b0

Trojan:Win32/Bluether.B!dha also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware2
Elasticmalicious (high confidence)
FireEyeGeneric.mg.5b83dcd3f6615e9b
McAfeeGenericRXEX-WK!5B83DCD3F661
CylanceUnsafe
ZillyaTrojan.Blocker.Win32.23070
SangforTrojan.Win32.Generic.ky
K7AntiVirusTrojan ( 0055e3dd1 )
BitDefenderGen:Variant.Ser.Mikey.1378
K7GWTrojan ( 0055e3dd1 )
SymantecML.Attribute.HighConfidence
APEXMalicious
AvastWin32:Malware-gen
CynetMalicious (score: 90)
KasperskyHEUR:Trojan.Win32.Generic
AlibabaTrojan:Win32/Bluether.6616af56
NANO-AntivirusTrojan.Win32.Agent.dgbvdv
AegisLabTrojan.Win32.Blocker.j!c
MicroWorld-eScanGen:Variant.Ser.Mikey.1378
Ad-AwareGen:Variant.Ser.Mikey.1378
SophosMal/Generic-R + Troj/Bluether-B
ComodoMalware@#3ov85ya3zu4u0
F-SecureHeuristic.HEUR/AGEN.1133370
VIPRETrojan.Win32.Generic!BT
TrendMicroBKDR_PLEAD.ZTDK-A
McAfee-GW-EditionGenericRXEX-WK!5B83DCD3F661
EmsisoftGen:Variant.Ser.Mikey.1378 (B)
IkarusTrojan-Ransom.Blocker
AviraHEUR/AGEN.1133370
Antiy-AVLTrojan[Ransom]/Win32.Blocker
KingsoftWin32.Troj.Undef.(kcloud)
MicrosoftTrojan:Win32/Bluether.B!dha
ArcabitTrojan.Ser.Mikey.D562
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataGen:Variant.Ser.Mikey.1378
AhnLab-V3Trojan/Win32.Fsysna.R203192
BitDefenderThetaAI:Packer.EB20DA641F
ALYacGen:Variant.Ser.Mikey.1378
MAXmalware (ai score=100)
VBA32Trojan-Ransom.Blocker
MalwarebytesMalware.AI.1640369256
PandaTrj/Chgt.G
ESET-NOD32a variant of Win32/Agent.VBQ
TrendMicro-HouseCallBKDR_PLEAD.ZTDK-A
RisingTrojan.Bluether!8.1E8D (CLOUD)
YandexTrojan.Agent!tgQHF4R77Hk
FortinetW32/Agent.WMZ!tr
AVGWin32:Malware-gen
Cybereasonmalicious.3f6615
Paloaltogeneric.ml
Qihoo-360Win32/Trojan.Generic.HwcByAQA

How to remove Trojan:Win32/Bluether.B!dha 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:Win32/Bluether.B!dha 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:Win32/Bluether.B!dha 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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