Trojan.Agent.EXON (B)

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

What is Trojan.Agent.EXON (B) infection?

In this article you will locate about the interpretation of Trojan.Agent.EXON (B) as well as its negative impact on your computer. Such ransomware are a type of malware that is specified by on-line scams to demand paying the ransom money by a target.

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Most of the situations, Trojan.Agent.EXON (B) ransomware will certainly instruct its sufferers to initiate funds move for the function of counteracting the changes that the Trojan infection has introduced to the sufferer’s device.

Trojan.Agent.EXON (B) Summary

These modifications 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.;
  • A named pipe was used for inter-process communication;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • A process created a hidden window;
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Performs some HTTP requests;
  • 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
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • 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 found on the target’s hard drive — so the target can no longer utilize 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
z.whorecord.xyzBScope.TrojanRansom.Shade
a.tomx.xyzBScope.TrojanRansom.Shade
www.ip-adress.comBScope.TrojanRansom.Shade

Trojan.Agent.EXON (B)

The most normal networks whereby Trojan.Agent.EXON (B) Trojans are infused are:

  • By methods of phishing emails;
  • As a consequence of customer ending up on a source that organizes a harmful software program;

As soon as the Trojan is successfully infused, it will certainly either cipher the information on the sufferer’s computer or protect against the gadget from working in an appropriate manner – while also placing a ransom note that states the need for the sufferers to impact the settlement for the objective of decrypting the records or recovering the data system back to the first condition. In most circumstances, the ransom note will show up when the client restarts the PC after the system has actually currently been harmed.

Trojan.Agent.EXON (B) distribution channels.

In numerous corners of the world, Trojan.Agent.EXON (B) expands by leaps and bounds. However, the ransom notes as well as methods of obtaining the ransom money amount may vary relying on certain regional (local) settings. The ransom notes as well as tricks of obtaining the ransom quantity might vary depending on particular local (local) settings.

Ransomware injection

As an example:

    Faulty signals regarding unlicensed software application.

    In specific locations, the Trojans commonly wrongfully report having identified some unlicensed applications made it possible for on the target’s device. The alert after that requires the user to pay the ransom money.

    Faulty declarations regarding prohibited web content.

    In nations where software piracy is less popular, this technique is not as reliable for the cyber fraudulences. Additionally, the Trojan.Agent.EXON (B) popup alert may wrongly claim to be deriving from a police institution and will report having situated kid pornography or various other prohibited information on the device.

    Trojan.Agent.EXON (B) popup alert might incorrectly declare to be deriving from a legislation enforcement organization as well as will certainly report having located kid porn or other illegal information on the device. The alert will similarly contain a requirement for the customer to pay the ransom money.

Technical details

File Info:

crc32: E5BCA52B
md5: 2f0322428e9891ef4d672a1126574cd7
name: 530340.png
sha1: 0f245618f0f04d938424a7498c4d119ac9763bae
sha256: c5d86ad430a5c763fc68dda8f0cc9ca1a2ab85b28e70fa972b59893ab752a836
sha512: 799c48d2509a3b9bc3ed4eca0471eebf3d45b4700450eeb872320a5d3da653f1cd94b7841c581923dcc5cc281baaa83b82af00b0b9a411d70ad653c164675a7b
ssdeep: 6144:cLeKB/GlxLaQkHhPDYxG0WIO3etSyc2S2:cL6cDYxG0WIPcT2
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: xa9 Microsoft Corporation. All rights reserved.
InternalName: WmiApSrv.exe
FileVersion: 6.1.7600.16385 (win7_rtm.090713-1255)
CompanyName: Microsoft Corporation
ProductName: Microsoftxae Windowsxae Operating System
ProductVersion: 6.1.7600.16385
FileDescription: WMI Performance Reverse Adapter
OriginalFilename: WmiApSrv.exe
Translation: 0x0409 0x04b0

Trojan.Agent.EXON (B) also known as:

GridinSoftTrojan.Ransom.Gen
Elasticmalicious (high confidence)
CylanceUnsafe
SangforMalware
BitDefenderTrojan.Agent.EXON
Cybereasonmalicious.8f0f04
CyrenW32/Qbot.AA.gen!Eldorado
SymantecML.Attribute.HighConfidence
APEXMalicious
EmsisoftTrojan.Agent.EXON (B)
InvinceaGeneric ML PUA (PUA)
McAfee-GW-EditionW32/PinkSbot-HC!2F0322428E98
FireEyeGeneric.mg.2f0322428e9891ef
MAXmalware (ai score=80)
Antiy-AVLGrayWare/Win32.Kryptik.ehls
MicrosoftTrojan:Win32/Wacatac.C!ml
GDataTrojan.Agent.EXON
CynetMalicious (score: 100)
McAfeeW32/PinkSbot-HC!2F0322428E98
VBA32BScope.TrojanRansom.Shade
ESET-NOD32a variant of Win32/Kryptik.HGOR
RisingMalware.Undefined!8.C (TFE:2:szhKj0LokFE)
SentinelOneDFI – Malicious PE
FortinetW32/GenericKDZ.6939!tr
Qihoo-360HEUR/QVM20.1.916D.Malware.Gen

How to remove Trojan.Agent.EXON (B) 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 Trojan.Agent.EXON (B) 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.EXON (B) 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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