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

What is Backdoor.Agent.Trickbot infection?

In this article you will certainly locate regarding the definition of Backdoor.Agent.Trickbot as well as its unfavorable impact on your computer system. Such ransomware are a form of malware that is clarified by on the internet fraudulences to require paying the ransom by a victim.

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In the majority of the situations, Backdoor.Agent.Trickbot infection will advise its sufferers to start funds transfer for the purpose of neutralizing the changes that the Trojan infection has introduced to the target’s gadget.

Backdoor.Agent.Trickbot Summary

These adjustments can be as complies with:

  • 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.
  • Unconventionial language used in binary resources: Russian;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Creates a copy of itself;
  • Ciphering the records located on the sufferer’s hard disk drive — so the victim can no longer use the data;
  • Preventing routine accessibility 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.Ryuk Ransom.Ryuk


One of the most common channels through which Backdoor.Agent.Trickbot are injected are:

  • By ways of phishing emails;
  • As a repercussion of user ending up on a source that organizes a harmful software program;

As soon as the Trojan is effectively injected, it will either cipher the data on the victim’s PC or prevent the gadget from working in an appropriate way – while additionally positioning a ransom money note that discusses the requirement for the victims to impact the payment for the function of decrypting the papers or restoring the file system back to the initial problem. In most instances, the ransom money note will turn up when the customer reboots the COMPUTER after the system has actually currently been harmed.

Backdoor.Agent.Trickbot distribution channels.

In numerous corners of the globe, Backdoor.Agent.Trickbot grows by jumps as well as bounds. However, the ransom money notes and tricks of obtaining the ransom money quantity might vary relying on certain regional (local) setups. The ransom notes as well as tricks of obtaining the ransom money quantity may vary depending on certain regional (regional) setups.

Ransomware injection

For instance:

    Faulty informs concerning unlicensed software.

    In particular areas, the Trojans often wrongfully report having discovered some unlicensed applications allowed on the sufferer’s device. The sharp then requires the user to pay the ransom money.

    Faulty statements regarding illegal web content.

    In countries where software program piracy is less prominent, this approach is not as effective for the cyber frauds. Conversely, the Backdoor.Agent.Trickbot popup alert may incorrectly declare to be deriving from a law enforcement organization and will report having situated child porn or various other unlawful data on the tool.

    Backdoor.Agent.Trickbot popup alert may falsely claim to be acquiring from a legislation enforcement organization and also will certainly report having located child porn or various other unlawful data on the device. The alert will in a similar way consist of a demand for the user to pay the ransom.

Technical details

File Info:

crc32: 1F7B6098
md5: 8846a8d32b0c807602af16faf6e8a168
name: yas12.exe
sha1: 328dc8d1108c0719cefa2276f3d51f8b117591a0
sha256: 515774b104bd0db75a2ee5c0d57a2aaa49277ca6923593edafffae4cc34df540
sha512: 1882de80226b1fd67f9c9bba00eb780aed0747a50d014cad7be0b2cded9512847f3f9192289626d0cb99d56bc49e0634dc6a8eb1c863a12f26a25e99ea56c190
ssdeep: 3072:cHGfScuZRUvajQ3HbRcECLPM37j10rjw12/BEHaGRimAkdaVnBWBhPnjBhPpn2i:w1ZRiac6hPgf1K0RruTB+PjB/n2ipd
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2008
InternalName: WinHttpGatewayTest
FileVersion: 1, 0, 0, 1
ProductName: WinHttpGatewayTest Application
ProductVersion: 1, 0, 0, 1
FileDescription: WinHttpGatewayTest MFC Application
OriginalFilename: WinHttpGatewayTest.EXE
Translation: 0x0409 0x04b0

Backdoor.Agent.Trickbot also known as:

GridinSoft Trojan.Ransom.Gen
MicroWorld-eScan Trojan.Autoruns.GenericKD.42626339
FireEye Trojan.Autoruns.GenericKD.42626339
ALYac Backdoor.Agent.Trickbot
Cylance Unsafe
Sangfor Malware
K7AntiVirus Trojan ( 005605291 )
BitDefender Trojan.Autoruns.GenericKD.42626339
K7GW Trojan ( 005605291 )
Invincea heuristic
F-Prot W32/Emotet.AHR.gen!Eldorado
Symantec ML.Attribute.HighConfidence
APEX Malicious
Avast Win32:TrojanX-gen [Trj]
ClamAV Win.Dropper.TrickBot-7591794-0
GData Trojan.Autoruns.GenericKD.42626339
Kaspersky Trojan.Win32.Inject.amsdq
Alibaba Trojan:Win32/Trickbot.b4d66efb
NANO-Antivirus Trojan.Win32.Kryptik.hbdjsk
ViRobot Trojan.Win32.Trickbot.237568.C
AegisLab Trojan.Multi.Generic.4!c
Rising Trojan.Trickbot!8.E313 (CLOUD)
Ad-Aware Trojan.Autoruns.GenericKD.42626339
Sophos Mal/Generic-S
F-Secure Trojan.TR/Crypt.Agent.vfpfx
DrWeb Trojan.Packed.140
VIPRE Trojan.Win32.Generic!BT
TrendMicro TROJ_GEN.R015C0DBI20
McAfee-GW-Edition BehavesLike.Win32.Backdoor.dc
Emsisoft Trojan.Emotet (A)
Ikarus Trojan.Win32.Crypt
Cyren W32/Trojan.WVTA-4650
Jiangmin Trojan.Inject.bcje
Webroot W32.Malware.Gen
Avira TR/Crypt.Agent.vfpfx
MAX malware (ai score=86)
Antiy-AVL Trojan/Win32.Detplock
Endgame malicious (high confidence)
Arcabit Trojan.Autoruns.Generic.D28A6D23
ZoneAlarm Trojan.Win32.Inject.amsdq
Microsoft Trojan:Win32/Trickbot.BS!MTB
Acronis suspicious
McAfee RDN/Generic.dx
VBA32 Trojan.Wacatac
Malwarebytes Ransom.Ryuk
Panda Trj/CI.A
ESET-NOD32 a variant of Win32/Kryptik.HBFF
TrendMicro-HouseCall TROJ_GEN.R015C0DBI20
Tencent Win32.Trojan.Inject.Eadi
SentinelOne DFI – Suspicious PE
Fortinet W32/Kryptik.EEDP!tr
BitDefenderTheta Gen:NN.ZexaE.34090.oq0@ay8YM4fk
AVG Win32:TrojanX-gen [Trj]
CrowdStrike win/malicious_confidence_100% (W)
Qihoo-360 Generic/Trojan.d22

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

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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