Trojan.Agent.EVAV (B)

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

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

In this article you will certainly locate about the definition of Trojan.Agent.EVAV (B) and also its adverse impact on your computer. Such ransomware are a kind of malware that is clarified by on the internet fraudulences to demand paying the ransom by a victim.

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In the majority of the situations, Trojan.Agent.EVAV (B) virus will advise its victims to initiate funds transfer for the purpose of reducing the effects of the amendments that the Trojan infection has introduced to the sufferer’s tool.

Trojan.Agent.EVAV (B) 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.
  • Injection (inter-process);
  • Injection (Process Hollowing);
  • Attempts to connect to a dead IP:Port (3 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.
  • Mimics the system’s user agent string for its own requests;
  • Possible date expiration check, exits too soon after checking local time;
  • 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
  • Creates a hidden or system file. The malware adds the hidden attribute to every file and folder on your system, so it appears as if everything has been deleted from your hard drive.
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • 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.
  • Ciphering the papers found on the sufferer’s hard drive — so the target can no longer use the data;
  • Preventing routine access to the sufferer’s workstation;
Similar behavior
Related domains
www.ip-adress.comW32/GenKryptik.ELIQ!tr.ransom
redirector.gvt1.comW32/GenKryptik.ELIQ!tr.ransom
r4—sn-4g5ednsy.gvt1.comW32/GenKryptik.ELIQ!tr.ransom

Trojan.Agent.EVAV (B)

The most common networks where Trojan.Agent.EVAV (B) are injected are:

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

As quickly as the Trojan is effectively infused, it will either cipher the information on the sufferer’s computer or stop the tool from working in a correct way – while additionally placing a ransom note that discusses the requirement for the targets to effect the settlement for the purpose of decrypting the records or restoring the file system back to the initial problem. In a lot of instances, the ransom money note will certainly show up when the client reboots the COMPUTER after the system has actually already been damaged.

Trojan.Agent.EVAV (B) circulation channels.

In numerous edges of the world, Trojan.Agent.EVAV (B) grows by jumps and bounds. Nevertheless, the ransom notes and techniques of obtaining the ransom money quantity may differ depending upon specific local (local) setups. The ransom money notes as well as tricks of obtaining the ransom money amount might differ depending on certain regional (local) setups.

Ransomware injection

As an example:

    Faulty alerts concerning unlicensed software application.

    In certain locations, the Trojans commonly wrongfully report having actually found some unlicensed applications enabled on the sufferer’s tool. The sharp then demands the user to pay the ransom money.

    Faulty statements concerning illegal web content.

    In nations where software piracy is less popular, this approach is not as reliable for the cyber fraudulences. Alternatively, the Trojan.Agent.EVAV (B) popup alert may incorrectly claim to be originating from a police organization as well as will report having situated kid porn or other prohibited information on the device.

    Trojan.Agent.EVAV (B) popup alert might incorrectly claim to be obtaining from a regulation enforcement organization as well as will certainly report having situated child porn or other unlawful information on the gadget. The alert will similarly consist of a need for the customer to pay the ransom.

Technical details

File Info:

crc32: D6C7DD5D
md5: ce6aa2236db85a5ec652f419f99b3403
name: upload_file
sha1: 86bef6717b0c463eaa0999bdad6a109b0f0b777c
sha256: 19fb3d0b267464bcbdb0dd4456299eb07cf5ef7db740a48fffefa5fa74581116
sha512: 1baba8f80e42d42add73caf7607ae5f2523a3438d5e6d266786a47caba3b2f87d87cc1b33d2b3cf1b49118315b2d9998b394fa627907ff92682ed97121e3c6fe
ssdeep: 6144:jMhkpTK06/aA6udzpNi1yna2PiQ0erLeROSEGo89QNn/o8S2M1KpWwR+SHvRu4T:jMEK06CmNi1L54Z89QNNpJgC5j
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

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

GridinSoftTrojan.Ransom.Gen
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.Agent.EVAV
FireEyeGeneric.mg.ce6aa2236db85a5e
CylanceUnsafe
SangforMalware
BitDefenderTrojan.Agent.EVAV
Cybereasonmalicious.17b0c4
Invinceaheuristic
SymantecML.Attribute.HighConfidence
APEXMalicious
AvastWin32:Malware-gen
RisingTrojan.Generic@ML.100 (RDML:xWrSq7SkOK1/GRo/0pqkGQ)
Ad-AwareTrojan.Agent.EVAV
EmsisoftTrojan.Agent.EVAV (B)
F-SecureTrojan.TR/AD.Qbot.FM
DrWebBackDoor.Qbot.538
IkarusTrojan.Cryptic
AviraTR/AD.Qbot.FM
FortinetW32/GenKryptik.ELIQ!tr.ransom
ArcabitTrojan.Agent.EVAV
MicrosoftTrojan:Win32/Qakbot.SD!MTB
CynetMalicious (score: 100)
MAXmalware (ai score=87)
MalwarebytesBackdoor.Qbot
ESET-NOD32a variant of Win32/GenKryptik.EQKI
SentinelOneDFI – Malicious PE
GDataTrojan.Agent.EVAV
AVGWin32:Malware-gen
CrowdStrikewin/malicious_confidence_60% (D)
Qihoo-360Generic/HEUR/QVM19.1.41F7.Malware.Gen

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