Win32/Kryptik.FEJT

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

What is Win32/Kryptik.FEJT infection?

In this article you will find regarding the meaning of Win32/Kryptik.FEJT and also its adverse effect on your computer. Such ransomware are a type of malware that is elaborated by on-line frauds to require paying the ransom money by a victim.

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Most of the cases, Win32/Kryptik.FEJT ransomware will certainly advise its victims to launch funds transfer for the purpose of neutralizing the amendments that the Trojan infection has actually introduced to the victim’s tool.

Win32/Kryptik.FEJT Summary

These adjustments 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);
  • Injection with SetWindowLong in a remote process;
  • 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.
  • 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;
  • Executed a process and injected code into it, probably while unpacking;
  • 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 files located on the sufferer’s hard drive — so the target can no more use the information;
  • Preventing normal 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.FEJT

The most normal networks whereby Win32/Kryptik.FEJT Trojans are injected are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As an effect of customer ending up on a resource that holds a harmful software program;

As soon as the Trojan is successfully infused, it will either cipher the data on the sufferer’s computer or protect against the tool from operating in an appropriate manner – while additionally putting a ransom note that states the requirement for the sufferers to impact the payment for the objective of decrypting the papers or restoring the data system back to the first problem. In the majority of circumstances, the ransom note will certainly turn up when the client reboots the PC after the system has actually currently been damaged.

Win32/Kryptik.FEJT circulation channels.

In numerous edges of the world, Win32/Kryptik.FEJT expands by leaps and also bounds. Nonetheless, the ransom money notes as well as techniques of obtaining the ransom money quantity might vary depending on specific regional (regional) setups. The ransom money notes as well as tricks of obtaining the ransom money amount may differ depending on certain neighborhood (local) settings.

Ransomware injection

As an example:

    Faulty notifies regarding unlicensed software application.

    In particular areas, the Trojans usually wrongfully report having identified some unlicensed applications allowed on the victim’s gadget. The alert then demands the user to pay the ransom.

    Faulty declarations regarding unlawful material.

    In nations where software application piracy is much less popular, this technique is not as efficient for the cyber fraudulences. Alternatively, the Win32/Kryptik.FEJT popup alert might incorrectly claim to be originating from a police establishment and will report having situated child porn or other unlawful information on the gadget.

    Win32/Kryptik.FEJT popup alert might falsely assert to be deriving from a legislation enforcement establishment and also will report having located youngster porn or other prohibited information on the device. The alert will in a similar way include a requirement for the individual to pay the ransom.

Technical details

File Info:

crc32: 905352BE
md5: beb31d049bc8153b4358557dfc6615aa
name: BEB31D049BC8153B4358557DFC6615AA.mlw
sha1: 438a7479505279758150e1bf0ba9e335177597ab
sha256: 214e039f748ed893ae9c8c54f64c78898016ba7f2c09661a69fb3eb1a2936b1a
sha512: 02825023d06ed08214c6c1c367ebcc493ec21782602018e7945c158b56c4258735c9f134789be75d299ae46b045e9dcf9a6d53ad317b3a48aaf7f8b8d6ef778d
ssdeep: 6144:TWJ0Af+20IGiWZ2ftwBO53wxHZSaxXXed0mq6XJaRG2:TWJ0Q+Ftk6xed0m7Za7
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyrightxa9 2005-2015
InternalName:
FileVersion: 5.0.3.0
CompanyName: IObit
LegalTrademarks: IObit
Comments:
ProductName: UninstallMonitor
ProductVersion: 5.0.1.0
FileDescription: IObit Uninstaller 5 UninstallMontior
OriginalFilename:
Translation: 0x0409 0x04e4

Win32/Kryptik.FEJT also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 005224381 )
Elasticmalicious (high confidence)
DrWebTrojan.KillProc.54635
CynetMalicious (score: 100)
ALYacTrojan.Ransom.Cerber.1
CylanceUnsafe
ZillyaTrojan.Kryptik.Win32.2073476
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaTrojan:Win32/Viknok.5ff43174
K7GWTrojan ( 0051c8ad1 )
Cybereasonmalicious.49bc81
BaiduWin32.Trojan.Kryptik.alb
CyrenW32/Cerber.CE.gen!Eldorado
SymantecPacked.Generic.459
ESET-NOD32a variant of Win32/Kryptik.FEJT
APEXMalicious
AvastWin32:Trojan-gen
KasperskyHEUR:Trojan.Win32.Vucha.dc
BitDefenderTrojan.Ransom.Cerber.1
NANO-AntivirusTrojan.Win32.Vucha.evrttr
MicroWorld-eScanTrojan.Ransom.Cerber.1
TencentWin32.Trojan.Generic.Pjxb
Ad-AwareTrojan.Ransom.Cerber.1
SophosML/PE-A + Mal/Ransom-EJ
ComodoTrojWare.Win32.Kryptik.ERJ@6l0vie
BitDefenderThetaGen:NN.ZexaF.34722.uq0@aK02znkj
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_CERBER.SMEJ7
McAfee-GW-EditionBehavesLike.Win32.Ransomware.fc
FireEyeGeneric.mg.beb31d049bc8153b
EmsisoftTrojan.Ransom.Cerber.1 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan.Vucha.bhd
AviraHEUR/AGEN.1129194
eGambitUnsafe.AI_Score_94%
Antiy-AVLTrojan/Generic.ASMalwS.22EF858
MicrosoftTrojan:Win32/Viknok.B
ArcabitTrojan.Ransom.Cerber.1
GDataTrojan.Ransom.Cerber.1
AhnLab-V3Win-Trojan/Cerber.Gen
Acronissuspicious
McAfeeTrojan-FORL!BEB31D049BC8
MAXmalware (ai score=100)
VBA32BScope.TrojanPSW.Papras
PandaTrj/CI.A
TrendMicro-HouseCallRansom_CERBER.SMEJ7
RisingTrojan.Kryptik!1.AE9C (CLASSIC)
YandexTrojan.GenAsa!WtVq00nAUZY
IkarusVirus.Win32.CeeInject
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/Dridex.DD!tr
AVGWin32:Trojan-gen
Paloaltogeneric.ml

How to remove Win32/Kryptik.FEJT 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.FEJT 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.FEJT 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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