Win32/Kryptik.FBAV

What is Win32/Kryptik.FBAV infection?

In this short article you will certainly discover concerning the definition of Win32/Kryptik.FBAV and also its unfavorable effect on your computer system. Such ransomware are a form of malware that is clarified by online scams to demand paying the ransom money by a victim.

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In the majority of the cases, Win32/Kryptik.FBAV virus will certainly advise its victims to launch funds transfer for the purpose of counteracting the modifications that the Trojan infection has actually presented to the sufferer’s device.

Win32/Kryptik.FBAV 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.
  • Enumerates user accounts on the system;
  • 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.;
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • 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.
  • Unconventionial language used in binary resources: Chinese (Simplified);
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Exhibits behavior characteristic of Cerber ransomware;
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • Mimics the file times of a Windows system file;
  • 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.
  • Attempts to identify installed AV products by installation directory;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files located on the target’s disk drive — so the victim can no more utilize the information;
  • Preventing routine 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.

Win32/Kryptik.FBAV

One of the most common networks through which Win32/Kryptik.FBAV are injected are:

  • By ways of phishing e-mails;
  • As a consequence of customer ending up on a source that hosts a malicious software application;

As soon as the Trojan is successfully infused, it will certainly either cipher the information on the victim’s PC or stop the device from operating in an appropriate way – while also positioning a ransom money note that states the demand for the sufferers to effect the settlement for the function of decrypting the papers or restoring the documents system back to the initial problem. In most circumstances, the ransom note will turn up when the customer reboots the PC after the system has actually already been harmed.

Win32/Kryptik.FBAV circulation networks.

In different edges of the globe, Win32/Kryptik.FBAV expands by jumps as well as bounds. Nonetheless, the ransom money notes as well as techniques of extorting the ransom money amount might vary depending on particular regional (regional) settings. The ransom money notes and also methods of extorting the ransom money quantity might differ depending on specific regional (regional) setups.

Ransomware injection

As an example:

    Faulty signals concerning unlicensed software application.

    In specific areas, the Trojans often wrongfully report having actually spotted some unlicensed applications made it possible for on the victim’s tool. The alert after that demands the customer to pay the ransom.

    Faulty declarations concerning prohibited content.

    In countries where software application piracy is less preferred, this technique is not as reliable for the cyber frauds. Alternatively, the Win32/Kryptik.FBAV popup alert may falsely declare to be stemming from a police organization as well as will certainly report having located child pornography or various other prohibited data on the tool.

    Win32/Kryptik.FBAV popup alert may falsely claim to be acquiring from a legislation enforcement institution as well as will report having situated youngster pornography or other illegal data on the device. The alert will in a similar way include a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 01439152
md5: a417db4d8ac9cd75df25d3d43ea483d3
name: A417DB4D8AC9CD75DF25D3D43EA483D3.mlw
sha1: 57cb076b2daddb807e874c07d7f4f950b44f77e3
sha256: d456de8c1d023cb680821ca71b854d34ebf988e0ea3777971f8505852716f661
sha512: 22249a48132aa418c169da02ed926f48e87bad69a89c09f5afca3baeadaa971f86046dc71260286731125e8ce74f7fb6d22baf6cb5c58bd9ea8a9c1cbb2574ca
ssdeep: 6144:UmcVP/digzwIce5x7dithqXOKJM888888888888W88888888888z:8pBGuLiG1M888888888888W88888888U
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

InternalName: 3RVX.exe
FileDescription: 3RVX
FileVersion: 2.5
CompanyName: matt.malensek.net
Translation: 0x0000 0x04b0

Win32/Kryptik.FBAV also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 004f58081 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.5189
Cynet Malicious (score: 100)
CAT-QuickHeal Ransom.Cerber.YY4
ALYac Trojan.Ransom.Cerber.1
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Ransom:Win32/Cerber.bcd93f65
K7GW Trojan ( 004f58081 )
Cybereason malicious.d8ac9c
Baidu Win32.Trojan.Kryptik.arx
Symantec Packed.Generic.459
ESET-NOD32 a variant of Win32/Kryptik.FBAV
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Ransomware.Cerber-7082574-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.Ransom.Cerber.1
NANO-Antivirus Trojan.Win32.Encoder.evkbry
SUPERAntiSpyware Ransom.Cerber/Variant
MicroWorld-eScan Trojan.Ransom.Cerber.1
Tencent Malware.Win32.Gencirc.114924ab
Ad-Aware Trojan.Ransom.Cerber.1
Sophos Mal/Generic-R + Mal/Ransom-EJ
Comodo TrojWare.Win32.Kryptik.ERJ@6l0vie
BitDefenderTheta Gen:NN.ZexaF.34628.pq1@aicrNcgj
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CERBER.SMEJ1
McAfee-GW-Edition BehavesLike.Win32.Dropper.dh
FireEye Generic.mg.a417db4d8ac9cd75
Emsisoft Trojan.Ransom.Cerber.1 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Generic.bseoi
Avira HEUR/AGEN.1105582
eGambit Unsafe.AI_Score_99%
Microsoft Ransom:Win32/Cerber.A
Arcabit Trojan.Ransom.Cerber.1
ZoneAlarm HEUR:Packed.Win32.Mentiger.gen
GData Trojan.Ransom.Cerber.1
AhnLab-V3 Win-Trojan/Cerber.Gen
Acronis suspicious
McAfee Ransomware-FQT!A417DB4D8AC9
MAX malware (ai score=100)
VBA32 Trojan.Agentb
Malwarebytes Malware.AI.2190580496
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom_CERBER.SMEJ1
Rising Trojan.Kryptik!1.AF0E (CLOUD)
Yandex Trojan.GenAsa!qgYLLiU2LBU
Ikarus Trojan.Win32.Crypt
Fortinet W32/Kryptik.HEKH!tr
AVG Win32:Malware-gen
Qihoo-360 Win32/Ransom.Cerber.HxQBEpsA

How to remove Win32/Kryptik.FBAV 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.FBAV 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.FBAV 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/products/

About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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