Win32/Kryptik.FDSY

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

What is Win32/Kryptik.FDSY infection?

In this short article you will locate regarding the interpretation of Win32/Kryptik.FDSY and also its unfavorable impact on your computer. Such ransomware are a type of malware that is elaborated by on the internet fraudulences to require paying the ransom by a target.

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In the majority of the situations, Win32/Kryptik.FDSY virus will certainly instruct its targets to start funds move for the objective of reducing the effects of the changes that the Trojan infection has introduced to the target’s device.

Win32/Kryptik.FDSY 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.
  • At least one process apparently crashed during execution;
  • 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;
  • Checks the system manufacturer, likely for anti-virtualization;
  • 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 papers found on the sufferer’s hard drive — so the victim can no longer make use of the data;
  • Preventing normal access 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.FDSY

One of the most typical channels whereby Win32/Kryptik.FDSY are infused are:

  • By means of phishing emails;
  • As a consequence of individual winding up on a source that hosts a harmful software;

As quickly as the Trojan is successfully injected, it will either cipher the information on the target’s computer or avoid the tool from functioning in a proper manner – while additionally putting a ransom note that discusses the demand for the sufferers to effect the repayment for the function of decrypting the files or restoring the data system back to the preliminary condition. In most instances, the ransom note will come up when the customer reboots the PC after the system has actually currently been damaged.

Win32/Kryptik.FDSY circulation networks.

In various corners of the world, Win32/Kryptik.FDSY grows by jumps and also bounds. Nonetheless, the ransom money notes and also tricks of extorting the ransom amount may differ depending upon certain local (local) settings. The ransom money notes and also methods of extorting the ransom amount may differ depending on specific local (local) setups.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software program.

    In particular locations, the Trojans usually wrongfully report having found some unlicensed applications made it possible for on the victim’s tool. The sharp then demands the individual to pay the ransom.

    Faulty statements regarding prohibited material.

    In countries where software piracy is much less prominent, this method is not as reliable for the cyber fraudulences. Additionally, the Win32/Kryptik.FDSY popup alert may incorrectly assert to be originating from a law enforcement establishment as well as will report having located child pornography or other unlawful data on the device.

    Win32/Kryptik.FDSY popup alert might wrongly declare to be obtaining from a legislation enforcement institution as well as will certainly report having located youngster porn or various other prohibited data on the tool. The alert will in a similar way contain a demand for the individual to pay the ransom money.

Technical details

File Info:

crc32: B8E52234
md5: b45628fe0d5ca78528455808d62b1177
name: B45628FE0D5CA78528455808D62B1177.mlw
sha1: 3d57945a7ea9ac9b84f059e86125bd251ad32811
sha256: 39455156142839eff93091e15a8aa44204b5aff5fa6441c89a140499960ed5c7
sha512: d4eab2c8287efb3a3e416451bed52096e2ae3eb5c0ef48f5edbfe744d0bc186e68382c6e55269c5bfbf661d3deb4f1b20dbc74e2b87337868b8cbdb3b085b295
ssdeep: 6144:irXsNQ2sXque4+sk/+QL6gDbWne5O4b888888888888W88888888888c:ijshBMvk2w6xGb888888888888W8888z
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.FDSY also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 004f95911 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.5189
CynetMalicious (score: 100)
CAT-QuickHealRansom.Cerber.YY2
ALYacTrojan.Ransom.Cerber.1
CylanceUnsafe
ZillyaTrojan.Cerber.Win32.517
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (W)
AlibabaRansom:Win32/Cerber.c822a0be
K7GWTrojan ( 004f95911 )
Cybereasonmalicious.e0d5ca
BaiduWin32.Trojan.Kryptik.arx
CyrenW32/Cerber.A2.gen!Eldorado
SymantecPacked.Generic.459
ESET-NOD32a variant of Win32/Kryptik.FDSY
APEXMalicious
AvastWin32:Filecoder-BG [Trj]
ClamAVWin.Ransomware.Cerber-7082574-0
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.Ransom.Cerber.1
NANO-AntivirusTrojan.Win32.Encoder.evqkuj
SUPERAntiSpywareRansom.Cerber/Variant
MicroWorld-eScanTrojan.Ransom.Cerber.1
TencentWin32.Trojan.Cerber.Pdvq
Ad-AwareTrojan.Ransom.Cerber.1
SophosML/PE-A + Mal/Ransom-EJ
ComodoTrojWare.Win32.Kryptik.ERJ@6l0vie
BitDefenderThetaGen:NN.ZexaF.34608.pq1@a0vPDlmj
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_CERBER.SMEJ1
McAfee-GW-EditionBehavesLike.Win32.Dropper.dh
FireEyeGeneric.mg.b45628fe0d5ca785
EmsisoftTrojan.Ransom.Cerber.1 (B)
SentinelOneStatic AI – Malicious PE
AviraTR/Crypt.XPACK.Gen7
eGambitUnsafe.AI_Score_100%
MicrosoftRansom:Win32/Cerber.A
ArcabitTrojan.Ransom.Cerber.1
AegisLabTrojan.Win32.Generic.4!c
GDataTrojan.Ransom.Cerber.1
AhnLab-V3Win-Trojan/Cerber.Gen
Acronissuspicious
McAfeeRansomware-FXM!B45628FE0D5C
MAXmalware (ai score=99)
VBA32BScope.TrojanPSW.Papras
MalwarebytesMalware.AI.2190580496
PandaTrj/GdSda.A
TrendMicro-HouseCallRansom_CERBER.SMEJ1
RisingTrojan.Kryptik!1.AF0E (CLOUD)
YandexTrojan.Agent!yc4fk6m1tYM
IkarusTrojan-Ransom.FileCrypter
FortinetW32/Dridex.DD!tr
AVGWin32:Filecoder-BG [Trj]
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.Cerber.HxQBINsA

How to remove Win32/Kryptik.FDSY 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.FDSY 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.FDSY 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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