Written by Robert Bailey

What is TrojanDropper:Win32/Bunitu.K!bit infection?

In this short article you will certainly discover concerning the interpretation of TrojanDropper:Win32/Bunitu.K!bit as well as its adverse impact on your computer system. Such ransomware are a form of malware that is clarified by on the internet frauds to require paying the ransom money by a sufferer.

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In the majority of the situations, TrojanDropper:Win32/Bunitu.K!bit infection will certainly advise its victims to initiate funds move for the function of counteracting the modifications that the Trojan infection has introduced to the sufferer’s tool.

TrojanDropper:Win32/Bunitu.K!bit Summary

These alterations can be as follows:

  • 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.;
  • Starts servers listening on,;
  • A process created a hidden window;
  • Uses Windows utilities for basic functionality;
  • Attempts to identify installed AV products by registry key;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the sufferer’s hard drive — so the sufferer can no more use the information;
  • Preventing routine 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.Blocker!8.12A (TFE:2:kq4kr0f289K) Ransom.Blocker!8.12A (TFE:2:kq4kr0f289K) Ransom.Blocker!8.12A (TFE:2:kq4kr0f289K) Ransom.Blocker!8.12A (TFE:2:kq4kr0f289K)


One of the most regular networks where TrojanDropper:Win32/Bunitu.K!bit Ransomware Trojans are infused are:

  • By ways of phishing emails;
  • As a consequence of user winding up on a source that organizes a harmful software program;

As quickly as the Trojan is effectively injected, it will either cipher the information on the target’s computer or protect against the device from functioning in an appropriate fashion – while additionally placing a ransom money note that mentions the demand for the victims to effect the repayment for the function of decrypting the records or bring back the data system back to the initial problem. In the majority of circumstances, the ransom note will certainly come up when the client restarts the COMPUTER after the system has actually currently been damaged.

TrojanDropper:Win32/Bunitu.K!bit circulation networks.

In different corners of the globe, TrojanDropper:Win32/Bunitu.K!bit expands by jumps as well as bounds. Nonetheless, the ransom money notes and tricks of extorting the ransom quantity might differ depending on certain local (regional) setups. The ransom money notes and methods of extorting the ransom amount may vary depending on particular neighborhood (local) setups.

Ransomware injection

For example:

    Faulty notifies about unlicensed software program.

    In particular areas, the Trojans often wrongfully report having actually spotted some unlicensed applications allowed on the sufferer’s device. The sharp after that demands the individual to pay the ransom money.

    Faulty statements about prohibited web content.

    In nations where software program piracy is much less prominent, this technique is not as efficient for the cyber scams. Conversely, the TrojanDropper:Win32/Bunitu.K!bit popup alert might wrongly assert to be deriving from a police establishment as well as will report having located youngster pornography or various other illegal data on the gadget.

    TrojanDropper:Win32/Bunitu.K!bit popup alert might wrongly claim to be deriving from a law enforcement establishment and also will certainly report having located kid porn or other prohibited data on the device. The alert will similarly include a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: 5BED8A37
md5: c7d21e9633c74bdc68a4140d4b9441a5
name: upload_file
sha1: 2cf03be278eaeb7a4c5cdb51e94852e9cbc83177
sha256: 138ffc17d86de2f86b33188b8319e94416034cd4f3ed06a97bdb7c8e5e480f24
sha512: af36db683e4d8493bb98982011759c4457a753311a0a89c676f12898e202c487aa485abffb89dee7798e98ab8f693947be9e147a18896c6740f6c17e20b3a549
ssdeep: 1536:zIkJB9YExlGJGCD46uTwiJMlTODq0OjeRYx:z3vwGCD46WwiMlT0sjeRYx
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

TrojanDropper:Win32/Bunitu.K!bit also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetectVM.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Variant.Razy.774960
CAT-QuickHeal TrojanDropper.Bunitu
ALYac Gen:Variant.Fugrafa.8294
Cylance Unsafe
Sangfor Malware
K7AntiVirus Proxy-Program ( 004a98041 )
BitDefender Gen:Variant.Razy.774960
K7GW Proxy-Program ( 004a98041 )
Cybereason malicious.633c74
Symantec Trojan.Smallprox
APEX Malicious
Avast Win32:TrojanX-gen [Trj]
ClamAV Win.Malware.Razy-7139871-0
Kaspersky Trojan-Proxy.Win32.Bunitu.abzv
Alibaba Trojan:Win32/Bunitu.ali1000105
NANO-Antivirus Trojan.Win32.Blocker.etinni
ViRobot Trojan.Win32.Z.Blocker.116368
AegisLab Trojan.Win32.Fugrafa.4!c
Rising Ransom.Blocker!8.12A (TFE:2:kq4kr0f289K)
Ad-Aware Gen:Variant.Razy.774960
DrWeb Trojan.DownLoader25.42927
VIPRE Trojan.Win32.Generic!BT
Invincea Mal/Generic-S
Sophos Mal/Generic-S
Ikarus Trojan-Proxy.Agent
Jiangmin Trojan.Blocker.hpv
Avira TR/ATRAPS.Gen2
MAX malware (ai score=82)
Microsoft TrojanDropper:Win32/Bunitu.K!bit
Arcabit Trojan.Razy.DBD330
SUPERAntiSpyware Trojan.Agent/Gen-Troprox
ZoneAlarm Trojan-Proxy.Win32.Bunitu.abzv
GData Gen:Variant.Razy.774960
AhnLab-V3 Malware/Win32.RL_Generic.R299068
McAfee GenericRXGN-YS!C7D21E9633C7
VBA32 Trojan-Ransom.Blocker
Panda Trj/CI.A
ESET-NOD32 a variant of Win32/TrojanProxy.Agent.NYH
Tencent Malware.Win32.Gencirc.11b04248
Yandex Trojan.GenAsa!X57RUQQWv+0
SentinelOne DFI – Malicious PE
Fortinet W32/Agent.NYH!tr
BitDefenderTheta Gen:NN.ZexaF.34590.huY@aKv813ci
AVG Win32:TrojanX-gen [Trj]
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Win32/Trojan.fc8

How to remove TrojanDropper:Win32/Bunitu.K!bit 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

The is an excellent way to deal with recognizing and removing threats – using Gridinsoft Anti-Malware. This program will scan your PC, find and neutralize all suspicious processes.2.

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 TrojanDropper:Win32/Bunitu.K!bit 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 TrojanDropper:Win32/Bunitu.K!bit you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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