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

What is Trojan.Agent.CZJW infection?

In this short article you will discover about the interpretation of Trojan.Agent.CZJW and also its adverse influence on your computer. Such ransomware are a form of malware that is clarified by online frauds to require paying the ransom by a target.

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In the majority of the cases, Trojan.Agent.CZJW virus will instruct its targets to launch funds move for the objective of neutralizing the changes that the Trojan infection has introduced to the victim’s device.

Trojan.Agent.CZJW Summary

These adjustments can be as adheres to:

  • 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.;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • 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.
  • Uses Windows utilities for basic functionality;
  • 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!
  • 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
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Creates a slightly modified copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the papers situated on the victim’s hard disk drive — so the victim can no more utilize the data;
  • 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_GANDCRAB.SMD4 Ransom_GANDCRAB.SMD4
carder.bit Ransom_GANDCRAB.SMD4 Ransom_GANDCRAB.SMD4
ransomware.bit Ransom_GANDCRAB.SMD4


The most common networks where Trojan.Agent.CZJW Ransomware Trojans are injected are:

  • By means of phishing e-mails;
  • As an effect of customer ending up on a resource that holds a malicious software application;

As quickly as the Trojan is efficiently injected, it will either cipher the information on the victim’s PC or prevent the device from operating in an appropriate fashion – while additionally placing a ransom note that points out the demand for the targets to effect the settlement for the objective of decrypting the records or restoring the data system back to the first problem. In most circumstances, the ransom money note will certainly come up when the customer restarts the COMPUTER after the system has currently been harmed.

Trojan.Agent.CZJW distribution networks.

In different corners of the globe, Trojan.Agent.CZJW expands by leaps and also bounds. Nevertheless, the ransom notes and also methods of obtaining the ransom quantity may differ depending upon specific local (regional) setups. The ransom notes and also tricks of extorting the ransom money quantity may differ depending on particular regional (local) settings.

Ransomware injection

For instance:

    Faulty notifies regarding unlicensed software.

    In particular areas, the Trojans commonly wrongfully report having spotted some unlicensed applications enabled on the victim’s gadget. The alert then requires the individual to pay the ransom money.

    Faulty declarations about illegal material.

    In countries where software piracy is much less prominent, this approach is not as effective for the cyber frauds. Additionally, the Trojan.Agent.CZJW popup alert may wrongly declare to be stemming from a police institution and also will report having situated youngster pornography or other unlawful data on the gadget.

    Trojan.Agent.CZJW popup alert might incorrectly assert to be deriving from a law enforcement establishment as well as will certainly report having located child porn or various other illegal data on the gadget. The alert will likewise consist of a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: B0A5E2E7
md5: e0d5192e5c1b181a3591ebbeebd9011d
name: E0D5192E5C1B181A3591EBBEEBD9011D.mlw
sha1: 39018344d1ccc10257a9d27e03719063b584b0c5
sha256: 4f94fe3da061c38781c4fad963d74c2de0125c826cbc2321e16c0b1536d9e566
sha512: 2346e566229dfbd879e500f40dc1875f029c2bbb27a57af2e90d53f16765b8599d55fef0daa89139a453d72b5ead3e6e14d6c788f03bd03d9077251589a3ec8b
ssdeep: 3072:KbnGS39iKR1Bd5VQZvJtd9IMAIKJTRvL2Ag0FubXyGPf5gvUVSXy9qs3MA2EE0N8:KbTiKTF0/IBIlAOPW88XBERk35xU7HhS
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan.Agent.CZJW also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
ClamAV Win.Packed.Gandcrab-6552923-4
CAT-QuickHeal Trojan.Cloxer.A06
Qihoo-360 Win32/Trojan.f9e
McAfee Trojan-FPQB!E0D5192E5C1B
Cylance Unsafe
Zillya Backdoor.Mokes.Win32.1202
Sangfor Win.Packed.Gandcrab-6552923-4
K7AntiVirus Trojan ( 0053305e1 )
BitDefender Trojan.Agent.CZJW
K7GW Trojan ( 005328b91 )
Cybereason malicious.e5c1b1
Cyren W32/S-97c363a1!Eldorado
Symantec Packed.Generic.525
APEX Malicious
Cynet Malicious (score: 100)
Kaspersky HEUR:Trojan.Win32.Generic
NANO-Antivirus Trojan.Win32.Panda.fcmesv
ViRobot Trojan.Win32.GandCrab.Gen.A
SUPERAntiSpyware Trojan.Agent/Gen-Kryptik
MicroWorld-eScan Trojan.Agent.CZJW
Rising Trojan.Kryptik!1.B28B (RDMK:cmRtazqyWa7I8wM5G3RPfFWHGcc0)
Ad-Aware Trojan.Agent.CZJW
Sophos Mal/Generic-S + Mal/Agent-AUL
Comodo TrojWare.Win32.Magniber.FGH@7nyazg
F-Secure Trojan.TR/AD.GandCrab.fsmec
DrWeb Trojan.PWS.Panda.13454
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_GANDCRAB.SMD4
McAfee-GW-Edition BehavesLike.Win32.Generic.fc
Emsisoft Trojan.Agent.CZJW (B)
SentinelOne Static AI – Malicious PE
Avira TR/AD.GandCrab.fsmec
MAX malware (ai score=99)
Antiy-AVL Trojan/Win32.Chapak
Microsoft Ransom:Win32/Gandcrab.D!MTB
Arcabit Trojan.Agent.CZJW
AegisLab Trojan.Win32.GandCrypt.j!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.Agent.CZJW
AhnLab-V3 Win-Trojan/Gandcrab.Exp
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34590.tyX@aaftjhk
ALYac Trojan.Agent.CZJW
TACHYON Ransom/W32.GandCrab
VBA32 BScope.Trojan.Encoder
Malwarebytes Ransom.GandCrab
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/Kryptik.GGZI
TrendMicro-HouseCall Ransom_GANDCRAB.SMD4
Tencent Malware.Win32.Gencirc.114b37ad
Yandex Trojan.GenAsa!3FEGGstBgys
Ikarus Trojan-Ransom.GandCrab
eGambit Unsafe.AI_Score_99%
Fortinet W32/GenKryptik.DQHN!tr
AVG FileRepMalware
Avast FileRepMalware
CrowdStrike win/malicious_confidence_100% (D)
MaxSecure Ransomeware.GandCrypt.Gen

How to remove Trojan.Agent.CZJW 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.Agent.CZJW 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.Agent.CZJW you can always ask me in the comments for getting help.

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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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