Win32/Kryptik.FVFO

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

What is Win32/Kryptik.FVFO infection?

In this post you will certainly find regarding the meaning of Win32/Kryptik.FVFO as well as its adverse impact on your computer system. Such ransomware are a kind of malware that is specified by online scams to demand paying the ransom money by a target.

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Most of the instances, Win32/Kryptik.FVFO ransomware will certainly advise its victims to initiate funds move for the purpose of neutralizing the modifications that the Trojan infection has introduced to the sufferer’s gadget.

Win32/Kryptik.FVFO Summary

These alterations 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);
  • 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.
  • A process attempted to delay the analysis task.;
  • Executed a process and injected code into it, probably while unpacking;
  • Attempts to stop active services;
  • 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 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 documents located on the target’s hard drive — so the target can no longer make use of the data;
  • Preventing routine access to the sufferer’s workstation;

Win32/Kryptik.FVFO

The most typical networks whereby Win32/Kryptik.FVFO are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of customer winding up on a source that organizes a harmful software program;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the data on the sufferer’s computer or protect against the device from working in a correct way – while additionally placing a ransom money note that discusses the requirement for the victims to impact the payment for the purpose of decrypting the records or restoring the documents system back to the first condition. In the majority of circumstances, the ransom note will certainly turn up when the client reboots the PC after the system has actually already been harmed.

Win32/Kryptik.FVFO circulation channels.

In various edges of the globe, Win32/Kryptik.FVFO grows by jumps and also bounds. Nevertheless, the ransom money notes as well as tricks of extorting the ransom money amount may differ depending upon certain regional (local) setups. The ransom notes and also methods of obtaining the ransom amount may vary depending on specific local (regional) settings.

Ransomware injection

For example:

    Faulty informs regarding unlicensed software application.

    In specific locations, the Trojans typically wrongfully report having actually identified some unlicensed applications allowed on the sufferer’s device. The alert after that requires the user to pay the ransom money.

    Faulty declarations about illegal content.

    In countries where software application piracy is much less preferred, this technique is not as effective for the cyber fraudulences. Additionally, the Win32/Kryptik.FVFO popup alert might incorrectly assert to be stemming from a law enforcement establishment and will certainly report having located kid pornography or various other prohibited information on the tool.

    Win32/Kryptik.FVFO popup alert may wrongly declare to be deriving from a law enforcement organization and also will report having situated kid porn or various other unlawful information on the device. The alert will likewise contain a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 2F0D88E1
md5: 9ba70d77907b8610c5b44ed124c8073c
name: 9BA70D77907B8610C5B44ED124C8073C.mlw
sha1: 377186d658f3f6db43a6c2dd60657c723af913cb
sha256: f1fc858f2c833a66fb275348415b90988e122c99af93e48baf8d1916ae8434cc
sha512: 12e608fbac8df78e12bb08335554e0ef295d637b556f45b3e17f1870116a0d473bbb85e73e1564e613dc398d1deb53835b6f7b6c85b575cf65753e50c8bca424
ssdeep: 6144:Xc+V5ZhBhBhBhBhBhBh9hBhBhBhBhBhBhXhri6jEEC61tH0ms:XcMhBhBhBhBhBhBh9hBhBhBhBhBhBhX
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.FVFO also known as:

GridinSoft Trojan.Ransom.Gen
Elastic malicious (high confidence)
MicroWorld-eScan Gen:Heur.Ransom.Lukitos.1
FireEye Generic.mg.9ba70d77907b8610
CAT-QuickHeal Ransom.Cerber.ZZ5
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
K7AntiVirus Trojan ( 005137001 )
BitDefender Gen:Heur.Ransom.Lukitos.1
K7GW Trojan ( 005137001 )
Cybereason malicious.7907b8
APEX Malicious
Avast Win32:Filecoder-BI [Trj]
ClamAV Win.Ransomware.Locky-6335674-3
Alibaba Trojan:Win32/Obfuscator.cc66d9b0
NANO-Antivirus Trojan.Win32.Upatre.eromqb
AegisLab Trojan.Win32.Upatre.a!c
Ad-Aware Gen:Heur.Ransom.Lukitos.1
Sophos ML/PE-A + Mal/Elenoocka-E
Comodo TrojWare.Win32.Agiala.GG@7707by
F-Secure Heuristic.HEUR/AGEN.1120889
DrWeb Trojan.TinyNuke.9
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CERBER.SMALY0
McAfee-GW-Edition BehavesLike.Win32.Generic.dh
Emsisoft Gen:Heur.Ransom.Lukitos.1 (B)
Ikarus Trojan-Downloader.Win32.Wauchos
Jiangmin Trojan.Banker.TinyNuke.bh
Avira HEUR/AGEN.1120889
MAX malware (ai score=100)
Antiy-AVL Trojan/Win32.TSGeneric
Microsoft VirTool:Win32/Obfuscator.ARL
Arcabit Trojan.Ransom.Lukitos.1
SUPERAntiSpyware Ransom.Cerber/Variant
ZoneAlarm Trojan-Banker.Win32.Emotet.bngs
GData Gen:Heur.Ransom.Lukitos.1
Cynet Malicious (score: 100)
AhnLab-V3 Win-Trojan/Lukitus3.Exp
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34590.nqW@aWPcOA
VBA32 Trojan.FakeAV.01657
Malwarebytes Malware.AI.3472099708
Panda Trj/CI.A
ESET-NOD32 a variant of Win32/Kryptik.FVFO
TrendMicro-HouseCall Ransom_CERBER.SMALY0
Yandex Trojan.GenAsa!mxNAHQmNf14
SentinelOne Static AI – Malicious PE
Fortinet W32/GenKryptik.APXF!tr
AVG Win32:Filecoder-BI [Trj]
Paloalto generic.ml
CrowdStrike win/malicious_confidence_100% (D)
Qihoo-360 Win32/Backdoor.Emotet.HxMBpEcA

How to remove Win32/Kryptik.FVFO virus?

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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There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft2.

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 Win32/Kryptik.FVFO 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/Kryptik.FVFO 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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