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

What is Win32/Agent.AAFV infection?

In this article you will certainly discover concerning the definition of Win32/Agent.AAFV and also its unfavorable influence on your computer. Such ransomware are a form of malware that is elaborated by on-line fraudulences to demand paying the ransom by a target.

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In the majority of the situations, Win32/Agent.AAFV ransomware will certainly advise its sufferers to initiate funds transfer for the objective of counteracting the changes that the Trojan infection has actually introduced to the target’s device.

Win32/Agent.AAFV Summary

These modifications 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: Serbian;
  • 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!
  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the records found on the sufferer’s hard disk — so the target can no more use the data;
  • Preventing regular accessibility to the victim’s workstation;


The most typical networks where Win32/Agent.AAFV Ransomware Trojans are infused are:

  • By means of phishing emails;
  • As a repercussion of individual winding up on a resource that hosts a malicious software program;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the information on the victim’s PC or stop the device from working in an appropriate manner – while additionally placing a ransom note that points out the demand for the sufferers to effect the settlement for the objective of decrypting the papers or recovering the file system back to the initial condition. In many circumstances, the ransom note will show up when the customer restarts the PC after the system has currently been damaged.

Win32/Agent.AAFV circulation networks.

In various edges of the globe, Win32/Agent.AAFV expands by leaps and also bounds. However, the ransom money notes and also methods of extorting the ransom money amount may differ relying on particular regional (local) settings. The ransom notes as well as tricks of extorting the ransom money quantity might vary depending on particular regional (local) setups.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software.

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

    Faulty declarations concerning illegal material.

    In countries where software application piracy is less popular, this approach is not as efficient for the cyber scams. Additionally, the Win32/Agent.AAFV popup alert might wrongly claim to be originating from a law enforcement institution and will report having situated child pornography or various other illegal information on the tool.

    Win32/Agent.AAFV popup alert might incorrectly declare to be deriving from a legislation enforcement establishment as well as will report having situated youngster porn or other unlawful data on the device. The alert will in a similar way contain a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: E0AFEDCD
md5: e3083483121cd288264f8c5624fb2cd1
name: updatewin.exe
sha1: 144a1dd6714ff4b5675c32f428d1899e500140a5
sha256: 114ccacb7ca57c01f3540611fdf49e68416544da8d8077f5896434a4b71b01dd
sha512: b14314784600881699a1fb3f45beb4ebeba72fd5bbf3e81329d84ff3220b0c48b0ac1602fff2aa80feda7e403b4a9c7d102890d9b96a042f52fac85d411f46da
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2018, huxonulow
InternalName: sutazaxidi.exe
Translation: 0x0669 0x04b0

Win32/Agent.AAFV also known as:

GridinSoft Trojan.Ransom.Gen
MicroWorld-eScan Trojan.AgentWDCR.SUF
CAT-QuickHeal Ransom.Stop.S7866402
Qihoo-360 HEUR/QVM10.2.98CB.Malware.Gen
McAfee Generic.bto
Cylance Unsafe
Zillya Trojan.Chapak.Win32.59443
AegisLab Trojan.Win32.Generic.4!c
Sangfor Malware
K7AntiVirus Trojan ( 00545a541 )
BitDefender Trojan.AgentWDCR.SUF
K7GW Trojan ( 00545a541 )
Cybereason malicious.3121cd
TrendMicro Trojan.Win32.MALREP.THOABAAI
BitDefenderTheta Gen:NN.ZexaF.34084.ru0@a8xQ2BoG
F-Prot W32/Kryptik.PT.gen!Eldorado
ESET-NOD32 Win32/Agent.AAFV
APEX Malicious
Avast Other:Malware-gen [Trj]
GData Win32.Packed.Kryptik.JUUEI4
Kaspersky HEUR:Trojan.Win32.Generic
Alibaba Trojan:Win32/Kryptik.74eacd51
NANO-Antivirus Trojan.Win32.Yakes.fmwlrp
ViRobot Trojan.Win32.S.Agent.284160.DA
Tencent Win32.Trojan.Generic.Agkm
Endgame malicious (high confidence)
Emsisoft Trojan.AgentWDCR.SUF (B)
Comodo Malware@#1osnkashzi01c
F-Secure Trojan.TR/Crypt.Agent.lvzhe
DrWeb Trojan.PWS.Siggen2.9186
VIPRE Win32.Malware!Drop
Invincea heuristic
McAfee-GW-Edition BehavesLike.Win32.Downloader.dh
Sophos Mal/GandCrab-G
Ikarus Trojan-Ransom.Downloader.Stop
Cyren W32/Kryptik.PT.gen!Eldorado
Jiangmin Trojan.Generic.dceqw
Webroot W32.Trojan.Gen
Avira TR/Crypt.Agent.lvzhe
MAX malware (ai score=100)
Antiy-AVL Trojan[Ransom]/Win32.Chapak.a
Microsoft Trojan:Win32/Fareit.VP!MTB
Arcabit Trojan.AgentWDCR.SUF
SUPERAntiSpyware Trojan.Agent/Gen-Kryptik
AhnLab-V3 Win-Trojan/Gandcrab10.Exp
ZoneAlarm HEUR:Trojan.Win32.Generic
ALYac Trojan.Ransom.Stop
VBA32 BScope.Trojan.Chapak
Malwarebytes Trojan.MalPack.GS
Panda Trj/WLT.E
Zoner Trojan.Win32.80413
TrendMicro-HouseCall Trojan.Win32.MALREP.THOABAAI
Rising Trojan.Kryptik!1.B582 (KTSE)
Yandex Trojan.Chapak!
eGambit Unsafe.AI_Score_99%
Fortinet W32/Generic.AAFV!tr
Ad-Aware Trojan.AgentWDCR.SUF
AVG Other:Malware-gen [Trj]
CrowdStrike win/malicious_confidence_100% (W)
MaxSecure Ransomeware.GandCrypt.JZ

How to remove Win32/Agent.AAFV 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.

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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 Win32/Agent.AAFV 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 Win32/Agent.AAFV 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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