Win32/Kryptik.FOLJ

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

What is Win32/Kryptik.FOLJ infection?

In this post you will discover concerning the meaning of Win32/Kryptik.FOLJ and its unfavorable influence on your computer system. Such ransomware are a kind of malware that is clarified by on-line frauds to demand paying the ransom by a sufferer.

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Most of the situations, Win32/Kryptik.FOLJ ransomware will advise its targets to initiate funds move for the function of counteracting the changes that the Trojan infection has introduced to the victim’s device.

Win32/Kryptik.FOLJ 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;
  • 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;
  • 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.
  • Ciphering the papers situated on the sufferer’s hard disk — so the target can no more utilize the data;
  • Preventing normal 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.FOLJ

One of the most typical networks through which Win32/Kryptik.FOLJ Trojans are injected are:

  • By ways of phishing e-mails;
  • As an effect of individual ending up on a source that organizes a harmful software;

As quickly as the Trojan is successfully injected, it will either cipher the data on the victim’s computer or protect against the tool from working in an appropriate fashion – while likewise positioning a ransom money note that mentions the need for the victims to impact the settlement for the objective of decrypting the papers or recovering the file system back to the initial condition. In a lot of circumstances, the ransom note will certainly show up when the customer reboots the PC after the system has actually currently been damaged.

Win32/Kryptik.FOLJ distribution channels.

In numerous corners of the world, Win32/Kryptik.FOLJ grows by jumps as well as bounds. Nevertheless, the ransom money notes as well as techniques of extorting the ransom money amount may vary depending on specific regional (regional) settings. The ransom notes and tricks of extorting the ransom quantity may vary depending on specific regional (local) setups.

Ransomware injection

As an example:

    Faulty alerts concerning unlicensed software program.

    In certain areas, the Trojans often wrongfully report having discovered some unlicensed applications allowed on the victim’s tool. The alert after that requires the individual to pay the ransom.

    Faulty statements about unlawful material.

    In nations where software application piracy is much less popular, this method is not as efficient for the cyber frauds. Additionally, the Win32/Kryptik.FOLJ popup alert might falsely assert to be stemming from a law enforcement establishment and will report having located child pornography or other illegal data on the gadget.

    Win32/Kryptik.FOLJ popup alert may incorrectly claim to be acquiring from a regulation enforcement establishment as well as will certainly report having located youngster pornography or various other illegal information on the tool. The alert will in a similar way include a demand for the individual to pay the ransom.

Technical details

File Info:

crc32: FF7E2F81
md5: b8ee10ee8e5a0f76cf293805ce7e57b6
name: B8EE10EE8E5A0F76CF293805CE7E57B6.mlw
sha1: 2896faa55978f6c7381a0b1acc08dcb4dbb1443d
sha256: cdb7dc01f571d9f31183ad6deb2db8ecbb80a1f145e02e8a13503dbc5b041b76
sha512: f11378834cdbd160c5a5ab8c0ef0ed91bc6a206f679881caa078c4a8093b77ebe9b61b0968b9d961e196cf9f0c90a3c5883323bd0ee614361c0dc4012b9059df
ssdeep: 3072:kHG3I4A8mHbca632yAPy9eChzKa1Lrnd6AmhXV/80+:/4Z8mHIa63Mlsrd6AaXV
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.FOLJ also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.Ransom.BKM
FireEye Generic.mg.b8ee10ee8e5a0f76
CAT-QuickHeal Ransom.Exxroute.A3
McAfee Ransomware-FMJ!B8EE10EE8E5A
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
BitDefender Trojan.Ransom.BKM
K7GW Trojan ( 0050529f1 )
K7AntiVirus Trojan ( 005137001 )
Arcabit Trojan.Ransom.BKM
Baidu Win32.Trojan.Kryptik.bjk
Symantec Packed.Generic.493
APEX Malicious
Avast Win32:Filecoder-AZ [Trj]
ClamAV Win.Ransomware.Spora-9525060-0
Kaspersky HEUR:Trojan-Ransom.Win32.Spora.vho
Alibaba Trojan:Win32/Manggarypt.79f03439
NANO-Antivirus Trojan.Win32.Filecoder.elobik
Rising Ransom.Cerber!8.3058 (CLOUD)
Ad-Aware Trojan.Ransom.BKM
Sophos ML/PE-A + Mal/Elenoocka-E
Comodo TrojWare.Win32.Ransom.Exroute.SC@6tub73
F-Secure Heuristic.HEUR/AGEN.1116787
DrWeb Trojan.PWS.Sphinx.2
Zillya Trojan.Kryptik.Win32.2687464
TrendMicro Ransom_CERBER.SM37
McAfee-GW-Edition BehavesLike.Win32.Generic.cc
Emsisoft Trojan.Ransom.BKM (B)
Ikarus Trojan.Dalexis
Jiangmin Trojan.Spora.al
Avira HEUR/AGEN.1116787
MAX malware (ai score=99)
Antiy-AVL Trojan/Win32.AGeneric
Microsoft Trojan:Win32/Manggarypt.B!bit
ZoneAlarm HEUR:Trojan-Ransom.Win32.Spora.vho
GData Trojan.Ransom.BKM
Cynet Malicious (score: 100)
AhnLab-V3 Trojan/Win32.RL_Generic.R299252
Acronis suspicious
BitDefenderTheta Gen:NN.ZexaF.34590.jmW@aetAjWii
ALYac Trojan.Ransom.BKM
VBA32 BScope.TrojanPSW.Sphinx
Malwarebytes Ransom.Cerber
Panda Trj/Genetic.gen
ESET-NOD32 a variant of Win32/Kryptik.FOLJ
TrendMicro-HouseCall Ransom_CERBER.SM37
Tencent Win32.Trojan.Cerber.Pity
Yandex Trojan.GenAsa!PITm9JWvDJI
SentinelOne Static AI – Malicious PE
eGambit Unsafe.AI_Score_99%
Fortinet W32/Kryptik.GKVH!tr
AVG Win32:Filecoder-AZ [Trj]
Cybereason malicious.e8e5a0
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Ransom.9ef

How to remove Win32/Kryptik.FOLJ 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.FOLJ 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.FOLJ 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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