Trojan.Agent.EXJK

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

What is Trojan.Agent.EXJK infection?

In this post you will certainly discover concerning the meaning of Trojan.Agent.EXJK as well as its negative effect on your computer. Such ransomware are a kind of malware that is specified by on the internet scams to require paying the ransom by a target.

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Most of the instances, Trojan.Agent.EXJK infection will certainly instruct its targets to initiate funds move for the purpose of neutralizing the amendments that the Trojan infection has introduced to the victim’s tool.

Trojan.Agent.EXJK 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Attempts to connect to a dead IP:Port (1 unique times);
  • Presents an Authenticode digital signature;
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • Mimics the system’s user agent string for its own requests;
  • A process attempted to delay the analysis task.;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • A process created a hidden window;
  • Performs some HTTP requests;
  • Unconventionial language used in binary resources: Hungarian;
  • Uses Windows utilities for basic functionality;
  • Executed a process and injected code into it, probably while unpacking;
  • A system process is generating network traffic likely as a result of process injection;
  • 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
  • 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 victim’s hard drive — so the sufferer can no longer make use of the data;
  • Preventing normal accessibility to the sufferer’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
www.ip-adress.com W32/Phobos.HGAF!tr.ransom

Trojan.Agent.EXJK

The most normal channels through which Trojan.Agent.EXJK Trojans are injected are:

  • By means of phishing emails;
  • As a repercussion of customer ending up on a resource that holds a destructive software program;

As quickly as the Trojan is efficiently injected, it will either cipher the information on the target’s PC or avoid the device from functioning in an appropriate way – while likewise placing a ransom money note that discusses the demand for the sufferers to impact the settlement for the purpose of decrypting the documents or recovering the documents system back to the first problem. In a lot of circumstances, the ransom money note will come up when the client restarts the COMPUTER after the system has currently been damaged.

Trojan.Agent.EXJK distribution channels.

In various corners of the globe, Trojan.Agent.EXJK expands by jumps and also bounds. However, the ransom money notes and also techniques of obtaining the ransom money quantity may vary relying on specific local (local) settings. The ransom notes and also techniques of obtaining the ransom money amount may vary depending on certain local (regional) settings.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software.

    In certain areas, the Trojans often wrongfully report having discovered some unlicensed applications enabled on the victim’s tool. The sharp then requires the customer to pay the ransom money.

    Faulty declarations regarding unlawful material.

    In countries where software application piracy is much less popular, this technique is not as reliable for the cyber frauds. Alternatively, the Trojan.Agent.EXJK popup alert might wrongly assert to be originating from a police organization as well as will certainly report having located child pornography or various other illegal data on the gadget.

    Trojan.Agent.EXJK popup alert may falsely claim to be deriving from a legislation enforcement organization and also will certainly report having located child porn or various other illegal data on the gadget. The alert will likewise consist of a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: 6718286B
md5: 25cefa0af19567a61f63c6961fc72541
name: 238428.png
sha1: e6c441b15afe964affb0b1ebddebe827fd2d514c
sha256: 8ff931fa10085fa391e62db803ee3adc136d0601c1752f685c0951a461ff809f
sha512: 7981b8e77b3283c16274b1c24ecc43a71bcdc66fd206e999689dff225d22ff1d7e6242435e789776c3090beebb5fc6f2ba1a9052008672f3bb4a1d56674f0d73
ssdeep: 6144:FgfRCEBsOYa5y3g0q+Z1Af61g8nC8StMkuNURdRoc0WKkm5F1:OJCEyOYsqLjACi8C8vJZkm5r
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Trojan.Agent.EXJK also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.Agent.EXJK
FireEye Generic.mg.25cefa0af19567a6
ALYac Trojan.Agent.QakBot
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Malware
BitDefender Trojan.Agent.EXJK
K7GW Trojan ( 005707511 )
K7AntiVirus Trojan ( 005707511 )
TrendMicro TROJ_FRS.0NA103J620
Cyren W32/Qbot.Z.gen!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Paloalto generic.ml
Kaspersky UDS:DangerousObject.Multi.Generic
Alibaba Trojan:Win32/DangerousSig.e18c6a71
Ad-Aware Trojan.Agent.EXJK
Sophos Mal/EncPk-APW
Comodo TrojWare.Win32.Agent.dvsvv@0
F-Secure Heuristic.HEUR/AGEN.1101566
Invincea Mal/EncPk-APW
McAfee-GW-Edition BehavesLike.Win32.Trojan.dz
Emsisoft MalCert.A (A)
Ikarus Backdoor.QBot
Avira HEUR/AGEN.1101566
eGambit Unsafe.AI_Score_96%
MAX malware (ai score=82)
Microsoft Trojan:Win32/Qakbot.AR!MTB
Arcabit Trojan.Agent.EXJK
ZoneAlarm UDS:DangerousObject.Multi.Generic
GData Win32.Trojan.PSE.1Y14EM7
Cynet Malicious (score: 85)
McAfee Artemis!25CEFA0AF195
Malwarebytes Trojan.Qbot
Panda Trj/Agent.PM
ESET-NOD32 Win32/Qbot.CN
TrendMicro-HouseCall TROJ_FRS.0NA103J620
Rising [email protected] (RDMK:0Nn9e5gca1K8ra0PbLBGDQ)
SentinelOne DFI – Suspicious PE
Fortinet W32/Phobos.HGAF!tr.ransom
AVG Win32:DangerousSig [Trj]
Cybereason malicious.15afe9
Avast Win32:DangerousSig [Trj]
Qihoo-360 Generic/HEUR/QVM20.1.65DA.Malware.Gen

How to remove Trojan.Agent.EXJK virus?

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 Trojan.Agent.EXJK 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.EXJK 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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