Written by Robert Bailey

What is Trojan.Win32.Chapak.eylo infection?

In this short article you will certainly find concerning the interpretation of Trojan.Win32.Chapak.eylo and its adverse effect on your computer system. Such ransomware are a type of malware that is specified by online frauds to demand paying the ransom by a target.

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In the majority of the instances, Trojan.Win32.Chapak.eylo infection will instruct its sufferers to start funds transfer for the objective of reducing the effects of the changes that the Trojan infection has actually introduced to the target’s gadget.

Trojan.Win32.Chapak.eylo 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.
  • Performs some HTTP requests;
  • Unconventionial language used in binary resources: Ukrainian;
  • 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;
  • 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 utilize the information;
  • Preventing routine accessibility 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 BehavesLike.Win32.RansomGandCrab.rc BehavesLike.Win32.RansomGandCrab.rc BehavesLike.Win32.RansomGandCrab.rc
r1— BehavesLike.Win32.RansomGandCrab.rc


The most typical networks where Trojan.Win32.Chapak.eylo are infused are:

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

As soon as the Trojan is efficiently injected, it will either cipher the data on the victim’s computer or stop the device from operating in a proper fashion – while additionally placing a ransom money note that mentions the requirement for the sufferers to effect the settlement for the objective of decrypting the papers or recovering the file system back to the first problem. In a lot of instances, the ransom note will certainly turn up when the client restarts the COMPUTER after the system has already been harmed.

Trojan.Win32.Chapak.eylo distribution channels.

In numerous edges of the globe, Trojan.Win32.Chapak.eylo grows by leaps and also bounds. However, the ransom notes and also methods of extorting the ransom money amount might differ depending on particular neighborhood (regional) setups. The ransom notes and also methods of obtaining the ransom money amount might differ depending on particular neighborhood (regional) setups.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software application.

    In certain areas, the Trojans frequently wrongfully report having spotted some unlicensed applications allowed on the sufferer’s tool. The alert after that requires the individual to pay the ransom money.

    Faulty statements about prohibited material.

    In countries where software application piracy is much less popular, this approach is not as efficient for the cyber scams. Conversely, the Trojan.Win32.Chapak.eylo popup alert may incorrectly declare to be stemming from a law enforcement establishment and also will report having located youngster porn or other unlawful data on the gadget.

    Trojan.Win32.Chapak.eylo popup alert might falsely claim to be acquiring from a regulation enforcement organization and will report having situated child porn or other illegal information on the gadget. The alert will likewise consist of a need for the individual to pay the ransom.

Technical details

File Info:

crc32: D8F82C41
md5: 40e2adee5346a4c3a63d7da398a33508
name: 40E2ADEE5346A4C3A63D7DA398A33508.mlw
sha1: 5479760ce2d4285c118338fac162610599c19fab
sha256: 9b58764d110354657d6e9efa2272410757b1fb6fba0207c0f8252a271d8cd2fd
sha512: d44da746852dc1f6c094ac5fcb2a2949272f5a695a29c3e2a62f01fd05d85c5b5710218f16c8c98e7feaa5b3d1c78d67a7433698c2bed1466c72548026444565
ssdeep: 98304:vB6WDOlvopr4D8QzUdFPD0sxQhp9/0zI9bmr10sLKiy8Y98EEdzoEYUzdxiDXZm:oJITRk/CGbWTLFY8NzorncAZV1EzpR6
type: PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed

Version Info:

InternalSurname: vebug.ekc
Prod: 1.3.5
LegalCo: Copyri (C) 2019, pidmudakionca

Trojan.Win32.Chapak.eylo also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.AntiSandbox.GenericKDS.36179293
McAfee GenericRXAA-AA!40E2ADEE5346
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Malware
K7AntiVirus Trojan ( 00575d741 )
BitDefender Trojan.AntiSandbox.GenericKDS.36179293
K7GW Trojan ( 00575d741 )
Cybereason malicious.ce2d42
Cyren W32/Trojan.XRCO-8981
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:PWSX-gen [Trj]
Kaspersky Trojan.Win32.Chapak.eylo
Alibaba Trojan:Win32/Chapak.252d7814
AegisLab Trojan.Win32.Chapak.4!c
Rising Trojan.Kryptik!1.D183 (CLASSIC)
Ad-Aware Trojan.AntiSandbox.GenericKDS.36179293
Emsisoft Trojan.AntiSandbox.GenericKDS.36179293 (B)
F-Secure Trojan.TR/AD.GoCloudnet.halkd
DrWeb Trojan.PWS.RedLineNET.4
McAfee-GW-Edition BehavesLike.Win32.RansomGandCrab.rc
Sophos Mal/Generic-S
Ikarus Trojan.MalPack
eGambit Unsafe.AI_Score_76%
Avira TR/AD.GoCloudnet.halkd
MAX malware (ai score=89)
Kingsoft Win32.Troj.Generic_a.a.(kcloud)
Microsoft Trojan:Win32/Ranumbot.RD!MTB
Gridinsoft Trojan.Win32.Packed.oa
Arcabit Trojan.AntiSandbox.GenericS.D2280D5D
ZoneAlarm Trojan.Win32.Chapak.eylo
GData Trojan.AntiSandbox.GenericKDS.36179293
Cynet Malicious (score: 100)
AhnLab-V3 Malware/Gen.Reputation.C4304597
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34780.@pGfaW8tcbfc
ALYac Trojan.AntiSandbox.GenericKDS.36179293
VBA32 TrojanSpy.Stealer
Malwarebytes Trojan.MalPack.GS
Panda Trj/RnkBend.A
ESET-NOD32 WinGo/RanumBot.J
SentinelOne Static AI – Malicious PE
Fortinet W32/Kryptik.GWXD!tr
Webroot W32.Trojan.Gen
AVG Win32:PWSX-gen [Trj]
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Win32/Trojan.ec9

How to remove Trojan.Win32.Chapak.eylo 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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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.

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Press “Install” button.

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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.Chapak.eylo 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.Chapak.eylo you can always ask me in the comments for getting help.

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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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