Win32/Kryptik.FJFI

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

What is Win32/Kryptik.FJFI infection?

In this short article you will discover concerning the meaning of Win32/Kryptik.FJFI as well as its adverse influence on your computer system. Such ransomware are a form of malware that is elaborated by online scams to require paying the ransom by a victim.

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In the majority of the instances, Win32/Kryptik.FJFI ransomware will instruct its targets to launch funds move for the purpose of reducing the effects of the amendments that the Trojan infection has introduced to the victim’s gadget.

Win32/Kryptik.FJFI 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.
  • 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.;
  • Expresses interest in specific running processes;
  • 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.

  • A process created a hidden window;
  • Creates an excessive number of UDP connection attempts to external IP addresses;
  • Unconventionial language used in binary resources: Finnish;
  • 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;
  • Attempts to delete volume shadow copies;
  • 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!
  • Exhibits behavior characteristic of Cerber ransomware;
  • EternalBlue behavior. Allows cyber threat actors to remotely execute arbitrary code and gain access to a network by sending specially crafted packets.

    This is has made EternalBlue trick popular with various malware, such as Trickbot, a modular banking trojan, as well as CoinMiner and WannaMine, crypto miners that use the EternalBlue exploit in order to gain access to computing power to mine cryptocurrencies.

  • Generates some ICMP traffic;
  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files located on the sufferer’s disk drive — so the target can no more utilize the information;
  • Preventing regular access to the target’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.FJFI

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

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

As quickly as the Trojan is efficiently injected, it will certainly either cipher the data on the victim’s PC or prevent the tool from operating in an appropriate way – while likewise placing a ransom money note that discusses the demand for the targets to effect the repayment for the function of decrypting the files or recovering the file system back to the preliminary problem. In most circumstances, the ransom note will turn up when the customer restarts the PC after the system has already been harmed.

Win32/Kryptik.FJFI circulation networks.

In different edges of the world, Win32/Kryptik.FJFI grows by leaps and bounds. However, the ransom notes and tricks of obtaining the ransom money amount might differ relying on particular regional (local) setups. The ransom notes and also methods of obtaining the ransom money amount might differ depending on specific local (local) settings.

Ransomware injection

For instance:

    Faulty alerts regarding unlicensed software program.

    In specific locations, the Trojans commonly wrongfully report having actually detected some unlicensed applications allowed on the target’s tool. The alert after that requires the user to pay the ransom money.

    Faulty declarations regarding unlawful content.

    In nations where software application piracy is much less preferred, this technique is not as effective for the cyber fraudulences. Conversely, the Win32/Kryptik.FJFI popup alert might falsely declare to be deriving from a law enforcement establishment and will certainly report having located youngster pornography or other illegal data on the tool.

    Win32/Kryptik.FJFI popup alert might falsely declare to be deriving from a legislation enforcement establishment and also will certainly report having located kid pornography or various other unlawful information on the gadget. The alert will likewise have a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: 63B55C98
md5: beb3cf0e4920e8ef7c916513855f0d62
name: BEB3CF0E4920E8EF7C916513855F0D62.mlw
sha1: 67f0cf7ca81a3053af9b08c586a696c2a97f8e75
sha256: d65270940363553429e3b259a8d9d02c345de141a01a6811e19c19c67cf82b9a
sha512: ac6f0005b8ee98e096a0f64059a93e050765fffed6de01d0d90338a9ac0bcfcf23cc1d80e09e8540667931805d1a03b75d3ab7d75e09dc89a4b43cde82994864
ssdeep: 6144:psrK3A8tH6zP/+jtv+TW3Vo6WPjmPnGRFAxMzxJwKd8lzgFXVnMzXUBBQ+qUP:pN3FR6Tstv6Yo6WPqPG3xpE074uqG
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

CompanyName: Adobe Systems Incorporated
Translation: 0x4009 0x04b0

Win32/Kryptik.FJFI also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 005224381 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.7074
CynetMalicious (score: 100)
CAT-QuickHealRansom.Cerber.A4
ALYacTrojan.Ransom.Cerber.1
CylanceUnsafe
ZillyaTrojan.Kryptik.Win32.972190
SangforRansom.Win32.Cerber_97.se
CrowdStrikewin/malicious_confidence_100% (D)
K7GWTrojan ( 004fc6c71 )
Cybereasonmalicious.e4920e
BaiduWin32.Trojan.Kryptik.bfj
CyrenW32/Kryptik.CUI.gen!Eldorado
SymantecPacked.Generic.459
ESET-NOD32a variant of Win32/Kryptik.FJFI
APEXMalicious
AvastWin32:Trojan-gen
ClamAVWin.Ransomware.Cerber-5571204-0
BitDefenderTrojan.Ransom.Cerber.1
NANO-AntivirusTrojan.Win32.Encoder.evdflt
MicroWorld-eScanTrojan.Ransom.Cerber.1
TencentMalware.Win32.Gencirc.10b6386d
Ad-AwareTrojan.Ransom.Cerber.1
SophosML/PE-A + Mal/Cerber-B
ComodoTrojWare.Win32.Filecoder.CB@6q31oo
BitDefenderThetaAI:Packer.34377FEB1F
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_CERBER.SMEJ5
McAfee-GW-EditionBehavesLike.Win32.Generic.hh
FireEyeGeneric.mg.beb3cf0e4920e8ef
EmsisoftTrojan.Ransom.Cerber.1 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan.Yakes.sms
WebrootW32.Trojan.Gen
AviraTR/Crypt.XPACK.Gen7
MicrosoftRansom:Win32/Cerber!rfn
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Ransom.Cerber.1
AhnLab-V3Win-Trojan/Cerber.Gen
Acronissuspicious
McAfeeRansom-Cerber!BEB3CF0E4920
MAXmalware (ai score=100)
VBA32BScope.Trojan.Encoder
MalwarebytesCerber.Ransom.Encrypt.DDS
PandaTrj/Genetic.gen
TrendMicro-HouseCallRansom_CERBER.SMEJ5
RisingTrojan.Kryptik!1.AE9C (RDMK:cmRtazpP88XghXOPg9v9JEzvyzBa)
YandexTrojan.GenAsa!f59XbZu4nsY
IkarusTrojan.Win32.Filecoder
FortinetW32/Kryptik.HGZD!tr
AVGWin32:Trojan-gen
Paloaltogeneric.ml

How to remove Win32/Kryptik.FJFI 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.FJFI 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:

Full version of GridinSoft

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If the guide doesn’t help you to remove Win32/Kryptik.FJFI 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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