Win32/Kryptik.GFOO

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

What is Win32/Kryptik.GFOO infection?

In this article you will certainly find concerning the definition of Win32/Kryptik.GFOO and its unfavorable impact on your computer system. Such ransomware are a type of malware that is specified by on-line frauds to require paying the ransom money by a target.

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Most of the instances, Win32/Kryptik.GFOO virus will certainly instruct its victims to initiate funds move for the objective of counteracting the changes that the Trojan infection has actually presented to the victim’s device.

Win32/Kryptik.GFOO 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.
  • 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.
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • 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.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the files located on the target’s hard disk — so the victim can no longer utilize the data;
  • Preventing regular accessibility to the target’s workstation;

Win32/Kryptik.GFOO

The most normal channels through which Win32/Kryptik.GFOO are infused are:

  • By ways of phishing emails;
  • As a consequence of user ending up on a source that holds a malicious software;

As quickly as the Trojan is efficiently injected, it will certainly either cipher the data on the victim’s computer or prevent the tool from working in a correct way – while likewise placing a ransom money note that discusses the need for the sufferers to effect the repayment for the purpose of decrypting the papers or restoring the documents system back to the initial condition. In most circumstances, the ransom money note will certainly turn up when the customer reboots the COMPUTER after the system has currently been damaged.

Win32/Kryptik.GFOO distribution networks.

In numerous corners of the world, Win32/Kryptik.GFOO expands by jumps as well as bounds. Nevertheless, the ransom notes and methods of obtaining the ransom amount might differ depending upon certain regional (regional) settings. The ransom notes and also tricks of obtaining the ransom money amount might differ depending on certain neighborhood (regional) settings.

Ransomware injection

As an example:

    Faulty signals about unlicensed software.

    In particular locations, the Trojans often wrongfully report having actually discovered some unlicensed applications allowed on the sufferer’s gadget. The alert then demands the individual to pay the ransom money.

    Faulty statements regarding prohibited web content.

    In countries where software program piracy is less preferred, this technique is not as reliable for the cyber fraudulences. Alternatively, the Win32/Kryptik.GFOO popup alert might wrongly claim to be stemming from a law enforcement institution and will report having situated child pornography or other illegal data on the gadget.

    Win32/Kryptik.GFOO popup alert might wrongly declare to be deriving from a law enforcement establishment and also will certainly report having situated youngster porn or various other illegal information on the device. The alert will similarly contain a requirement for the customer to pay the ransom.

Technical details

File Info:

crc32: FA7E3D02
md5: 62d82918f3d7a1f8ccbbbcaab3c1eece
name: 62D82918F3D7A1F8CCBBBCAAB3C1EECE.mlw
sha1: e4afd2def4c01f579b55c8e70f342630aa227f0c
sha256: 101d4fdf45caea43a5b8b330a55ae62968fe45a4e34e477ec59e90facd094e23
sha512: b11b7aef2dac33058b72f08c995d7afbf41d8bea7e86dfb7907234d318bcb6b9d957023cf1fa6d1c7978ca6abcdda9d949983c6d10535e46167a1680cc761b26
ssdeep: 6144:xN+NH4cJxGtiR+NLdixmvhH9dfrgxOUp0CjCawQ7TXXDbTQizLWoVupR1s7tKLQ:xN+d4cJxHoNtddfcR06C7OTXTbTOoVj
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GFOO also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 0052dc6d1 )
Elasticmalicious (high confidence)
DrWebTrojan.PWS.Banker1.27041
CynetMalicious (score: 100)
CAT-QuickHealTrojan.Chapak.ZZ5
CylanceUnsafe
ZillyaTrojan.Crypt.Win32.42695
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (D)
K7GWTrojan ( 0052dc6d1 )
Cybereasonmalicious.8f3d7a
CyrenW32/S-f898a10e!Eldorado
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of Win32/Kryptik.GFOO
APEXMalicious
AvastFileRepMalware
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.Emotet.Gen.3
NANO-AntivirusTrojan.Win32.Upatre.fafmrk
SUPERAntiSpywareTrojan.Agent/Gen-Kryptik
MicroWorld-eScanTrojan.Emotet.Gen.3
TencentWin32.Trojan.Foreign.Wpjs
Ad-AwareTrojan.Emotet.Gen.3
SophosMal/Generic-R + Mal/GandCrab-D
ComodoTrojWare.Win32.GandCrab.AF@7mvg00
BitDefenderThetaGen:NN.ZexaF.34692.xuW@auong4h
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_GANDCRAB.SMALY-3
McAfee-GW-EditionBehavesLike.Win32.Generic.fc
FireEyeGeneric.mg.62d82918f3d7a1f8
EmsisoftTrojan.Emotet.Gen.3 (B)
SentinelOneStatic AI – Malicious PE
JiangminTrojan.Crypt.apw
AviraHEUR/AGEN.1106533
eGambitUnsafe.AI_Score_99%
Antiy-AVLTrojan/Generic.ASMalwS.25AFAF4
MicrosoftRansom:Win32/Gandcrab.SF!MTB
ArcabitTrojan.Emotet.Gen.3
AegisLabTrojan.Win32.Generic.4!c
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Emotet.Gen.3
AhnLab-V3Win-Trojan/Gandcrab02.Exp
Acronissuspicious
McAfeeGenericRXET-JK!62D82918F3D7
MAXmalware (ai score=99)
VBA32BScope.Trojan.Chapak
MalwarebytesMachineLearning/Anomalous.96%
PandaTrj/CI.A
TrendMicro-HouseCallRansom_GANDCRAB.SMALY-3
RisingTrojan.Kryptik!8.8 (CLOUD)
YandexTrojan.GenAsa!CWdkONG66H0
IkarusTrojan.Win32.Crypt
MaxSecureRansomeware.CRAB.gen
FortinetW32/Kryptik.GXCI!tr
AVGFileRepMalware
Paloaltogeneric.ml

How to remove Win32/Kryptik.GFOO virus?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
Reasons why I would recommend GridinSoft1

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.GFOO 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.GFOO 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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