What is Trojan.Win32.Chapak.ensj infection?

In this post you will certainly find concerning the definition of Trojan.Win32.Chapak.ensj as well as its unfavorable influence on your computer. Such ransomware are a form of malware that is specified by on the internet scams to require paying the ransom money by a victim.

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In the majority of the instances, Trojan.Win32.Chapak.ensj infection will advise its targets to launch funds transfer for the function of neutralizing the changes that the Trojan infection has actually introduced to the victim’s tool.

Trojan.Win32.Chapak.ensj 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.
  • A process attempted to delay the analysis task.;
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Performs some HTTP requests;
  • Unconventionial language used in binary resources: Finnish;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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!
  • Steals private information from local Internet browsers;
  • Collects information about installed applications;
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Harvests credentials from local FTP client softwares;
  • Harvests information related to installed instant messenger clients;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers located on the target’s hard disk — so the target can no longer use the information;
  • Preventing routine 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 Ransom:Win32/SodinokibiCrypt.SK!MTB Ransom:Win32/SodinokibiCrypt.SK!MTB


One of the most common networks through which Trojan.Win32.Chapak.ensj are infused are:

  • By ways of phishing emails;
  • As an effect of individual ending up on a resource that hosts a destructive software program;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the victim’s computer or protect against the device from working in an appropriate way – while also putting a ransom note that mentions the need for the targets to effect the repayment for the purpose of decrypting the documents or bring back the data system back to the first condition. In many instances, the ransom note will show up when the customer restarts the PC after the system has already been damaged.

Trojan.Win32.Chapak.ensj circulation networks.

In different edges of the globe, Trojan.Win32.Chapak.ensj grows by leaps as well as bounds. Nonetheless, the ransom notes as well as techniques of obtaining the ransom quantity may vary relying on particular local (local) setups. The ransom money notes and also techniques of extorting the ransom quantity might vary depending on certain regional (regional) setups.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software application.

    In specific locations, the Trojans often wrongfully report having spotted some unlicensed applications enabled on the sufferer’s gadget. The alert after that demands the user to pay the ransom money.

    Faulty declarations about prohibited web content.

    In nations where software program piracy is much less popular, this approach is not as effective for the cyber frauds. Alternatively, the Trojan.Win32.Chapak.ensj popup alert may falsely claim to be stemming from a police establishment and also will certainly report having located child porn or other unlawful data on the tool.

    Trojan.Win32.Chapak.ensj popup alert may wrongly claim to be deriving from a legislation enforcement institution and will report having located youngster porn or other prohibited data on the device. The alert will similarly consist of a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: 74A29BB4
md5: 415e409bb52d51891eab0c9511724841
name: mtx999.exe
sha1: da3a9c4ae6932ed629d0e499f2569ea0a76a6cd9
sha256: 4b96e7d6b0214530843cb34525de5cbeee5bf2abb971f6a268d2c355cdfcc0cd
sha512: d457d29179bc4e98b30fdc4e258487e262aa79bc5b58d500e648c89d628f7f0a116c1c448902a0220ad74eb558de40d622db796306c052e62d5d3c34fd69d84f
ssdeep: 6144:usurhOJl4fTWheZnmAwltAQ6jy2kDGhV4qJ/4dPthNwuKj4IyX+nKj3c0XzogHX:3u9OorvmPNqV0PzNVU+TXng
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Copyright: Copyright (C) 2020, kazosh
ProductVersion: 1.7.45
Translations: 0x0441 0x0315

Trojan.Win32.Chapak.ensj also known as:

GridinSoft Trojan.Ransom.Gen
Bkav HW32.Packed.
Qihoo-360 HEUR/QVM10.1.269C.Malware.Gen
McAfee Artemis!415E409BB52D
AegisLab Riskware.Win32.Malicious.1!c
Sangfor Malware
BitDefender Trojan.GenericKD.34071227
Cybereason malicious.ae6932
Arcabit Trojan.Generic.D207E2BB
TrendMicro Trojan.Win32.VOBFUS.USXVPFP20
BitDefenderTheta Gen:NN.ZexaF.34130.Gq0@aCMupfhG
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.HEKG
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky Trojan.Win32.Chapak.ensj
MicroWorld-eScan Trojan.GenericKD.34071227
Ad-Aware Trojan.GenericKD.34071227
Emsisoft Trojan.Agent (A)
Invincea heuristic
Fortinet Malicious_Behavior.SB
SentinelOne DFI – Suspicious PE
MAX malware (ai score=86)
Endgame malicious (high confidence)
Microsoft Ransom:Win32/SodinokibiCrypt.SK!MTB
ZoneAlarm Trojan.Win32.Chapak.ensj
AhnLab-V3 Trojan/Win32.MalPe.R341637
Acronis suspicious
Malwarebytes Trojan.MalPack.GS
TrendMicro-HouseCall Trojan.Win32.VOBFUS.USXVPFP20
Rising Trojan.Kryptik!8.8 (CLOUD)
Ikarus Trojan.Win32.Crypt
eGambit Unsafe.AI_Score_82%
GData Win32.Trojan-Stealer.Vidar.FZBKMX
AVG Win32:TrojanX-gen [Trj]
Avast Win32:TrojanX-gen [Trj]
CrowdStrike win/malicious_confidence_100% (W)
MaxSecure Trojan.Malware.300983.susgen

How to remove Trojan.Win32.Chapak.ensj 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.

GridinSoft Anti-Malware Install

Once installed, Anti-Malware will automatically run.

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Wait for the Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your system for Trojan.Win32.Chapak.ensj 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.ensj 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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