Win32/Kryptik.FYRC

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

What is Win32/Kryptik.FYRC infection?

In this article you will discover regarding the definition of Win32/Kryptik.FYRC as well as its negative influence on your computer. Such ransomware are a kind of malware that is clarified by on the internet scams to require paying the ransom money by a victim.

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In the majority of the situations, Win32/Kryptik.FYRC ransomware will instruct its targets to start funds move for the objective of neutralizing the amendments that the Trojan infection has presented to the target’s device.

Win32/Kryptik.FYRC Summary

These alterations can be as follows:

  • 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 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.
  • 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;
  • Executed a process and injected code into it, probably while unpacking;
  • Deletes its original binary from disk;
  • 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!
  • 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;
  • Exhibits behavior characteristic of Proxyback malware;
  • Ciphering the documents found on the victim’s disk drive — so the target can no more utilize the data;
  • Preventing regular access 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.

Win32/Kryptik.FYRC

One of the most regular channels whereby Win32/Kryptik.FYRC are injected are:

  • By means of phishing e-mails;
  • As an effect of customer ending up on a source that organizes a destructive software;

As quickly as the Trojan is efficiently infused, it will either cipher the information on the sufferer’s PC or prevent the tool from operating in an appropriate fashion – while additionally putting a ransom note that points out the demand for the victims to effect the settlement for the purpose of decrypting the documents or bring back the data system back to the first problem. In most circumstances, the ransom note will show up when the client restarts the COMPUTER after the system has already been damaged.

Win32/Kryptik.FYRC circulation networks.

In numerous edges of the globe, Win32/Kryptik.FYRC grows by jumps and also bounds. Nonetheless, the ransom money notes as well as tricks of obtaining the ransom money quantity may vary depending on certain regional (local) settings. The ransom money notes and tricks of obtaining the ransom quantity may vary depending on particular local (regional) settings.

Ransomware injection

For instance:

    Faulty informs about unlicensed software program.

    In specific locations, the Trojans frequently wrongfully report having spotted some unlicensed applications made it possible for on the victim’s gadget. The alert then requires the user to pay the ransom.

    Faulty statements concerning illegal content.

    In countries where software program piracy is less preferred, this technique is not as reliable for the cyber scams. Conversely, the Win32/Kryptik.FYRC popup alert might wrongly claim to be deriving from a law enforcement organization as well as will certainly report having situated child pornography or various other illegal data on the device.

    Win32/Kryptik.FYRC popup alert may falsely declare to be deriving from a law enforcement institution and also will certainly report having situated youngster pornography or various other prohibited information on the tool. The alert will similarly contain a need for the user to pay the ransom money.

Technical details

File Info:

crc32: 9702E0CC
md5: ac449f867a01c0cd92bd7aa63f0e69e3
name: AC449F867A01C0CD92BD7AA63F0E69E3.mlw
sha1: c654be79a046654f52ad67243d2290d0ef20b256
sha256: 07c29b2bcbad5652093ad6322a5cde6c1610b45e40753a00df661a19879d258e
sha512: 59dfeb4f08a16a24eec4a8b09f7a616131e94239cdba99b1d7af82f4e482ef547d3207700c47883c852071407d058dde7e598d0a4d1814e3d48b648b8ebd1855
ssdeep: 6144:osHzOY5GLM6i8cjrHEwHdWYMcgZ9wCKtWSRwv3M7AWMqRS3OTHu:lz5Q469CHEYJQyCmW4o87AWMqE3OLu
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright, 2017
FileVersion: 47, 2, 1, 50
ProductVersion: 47, 2, 1, 50
Translation: 0x0409 0x04b0

Win32/Kryptik.FYRC also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 0056e9631 )
Elasticmalicious (high confidence)
DrWebTrojan.DownLoader25.53051
CynetMalicious (score: 100)
CAT-QuickHealTrojan.Chapak.ZZ5
ALYacTrojan.BRMon.Gen.1
CylanceUnsafe
ZillyaBackdoor.Htbot.Win32.44
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaTrojan:Win32/Cridex.bd6b02df
K7GWTrojan ( 0056e9631 )
Cybereasonmalicious.67a01c
CyrenW32/S-3a2ab017!Eldorado
SymantecInfostealer.Pandker!g1
ESET-NOD32a variant of Win32/Kryptik.FYRC
APEXMalicious
AvastWin32:Malware-gen
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.BRMon.Gen.1
NANO-AntivirusTrojan.Win32.Htbot.euuvny
SUPERAntiSpywareBackdoor.Andromeda/Variant
MicroWorld-eScanTrojan.BRMon.Gen.1
TencentMalware.Win32.Gencirc.1149599a
Ad-AwareTrojan.BRMon.Gen.1
SophosMal/Generic-S
ComodoTrojWare.Win32.Awkolo.B@7ke8pa
BitDefenderThetaGen:NN.ZexaF.34670.vq0@aWcne9k
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_HPGANDCRAB.SMG2
McAfee-GW-EditionBehavesLike.Win32.Generic.fc
FireEyeGeneric.mg.ac449f867a01c0cd
EmsisoftTrojan.BRMon.Gen.1 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan.Scarsi.bcq
WebrootW32.Trojan.GenKD
AviraTR/Crypt.XPACK.Gen7
eGambitGeneric.Malware
KingsoftWin32.Troj.Generic_a.a.(kcloud)
MicrosoftTrojan:Win32/Cridex.KPS!MTB
ArcabitTrojan.BRMon.Gen.1
AegisLabTrojan.Multi.Generic.4!c
GDataTrojan.BRMon.Gen.1
AhnLab-V3Trojan/Win32.MalCrypted.R213091
McAfeeTrojan-FMGH!AC449F867A01
MAXmalware (ai score=99)
VBA32Backdoor.Htbot
MalwarebytesRansom.Crysis
PandaTrj/Genetic.gen
TrendMicro-HouseCallRansom_HPGANDCRAB.SMG2
RisingBackdoor.Htbot!8.F02 (C64:YzY0On1hpuXJ9iuX)
YandexTrojan.GenAsa!sZk8mfJDXM4
IkarusTrojan.Win32.Crypt
MaxSecureRansomeware.CRAB.gen
FortinetW32/Kryptik.GSPC!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml
Qihoo-360Win32/Trojan.Generic.HwoC7REA

How to remove Win32/Kryptik.FYRC 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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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.FYRC 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.FYRC 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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