Win32/Kryptik.GGEF

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

What is Win32/Kryptik.GGEF infection?

In this post you will find about the interpretation of Win32/Kryptik.GGEF and also its adverse influence on your computer. Such ransomware are a form of malware that is specified by on-line fraudulences to demand paying the ransom by a sufferer.

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In the majority of the instances, Win32/Kryptik.GGEF virus will advise its sufferers to initiate funds move for the objective of counteracting the modifications that the Trojan infection has actually presented to the sufferer’s device.

Win32/Kryptik.GGEF Summary

These adjustments 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.
  • 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.
  • 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
  • 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 sufferer’s disk drive — so the victim can no longer make use of the data;
  • Preventing normal accessibility 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.GGEF

The most typical networks whereby Win32/Kryptik.GGEF Ransomware Trojans are infused are:

  • By means of phishing emails;
  • As an effect of customer ending up on a source that hosts a malicious software application;

As quickly as the Trojan is effectively injected, it will certainly either cipher the information on the target’s PC or protect against the device from functioning in a proper manner – while also placing a ransom note that states the requirement for the victims to effect the payment for the objective of decrypting the documents or recovering the data system back to the first condition. In many instances, the ransom note will certainly show up when the client reboots the COMPUTER after the system has actually already been harmed.

Win32/Kryptik.GGEF distribution networks.

In various corners of the globe, Win32/Kryptik.GGEF expands by leaps as well as bounds. However, the ransom notes as well as tricks of obtaining the ransom amount might differ relying on certain regional (regional) setups. The ransom money notes as well as tricks of extorting the ransom money amount may vary depending on specific local (regional) setups.

Ransomware injection

For instance:

    Faulty notifies about unlicensed software application.

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

    Faulty declarations regarding illegal web content.

    In countries where software program piracy is less prominent, this approach is not as reliable for the cyber frauds. Additionally, the Win32/Kryptik.GGEF popup alert might incorrectly assert to be stemming from a law enforcement establishment and will certainly report having located youngster porn or other prohibited information on the device.

    Win32/Kryptik.GGEF popup alert may wrongly claim to be deriving from a legislation enforcement establishment as well as will certainly report having situated kid porn or other illegal data on the gadget. The alert will in a similar way have a demand for the customer to pay the ransom money.

Technical details

File Info:

crc32: 97F58904
md5: 5cd37c88953839eb7ee60214030a60ca
name: 5CD37C88953839EB7EE60214030A60CA.mlw
sha1: d1524173e486c88d6a8d54b043d4a6cac29aa01b
sha256: 4f03f534b406b2adb4fe327704f241c2f488e4d19fa58c63e30c93aff4a84454
sha512: 9934c548aabfdbe030c39fcfd772c21702e8f08223db8790d728aafa7052b726483bfd2122f8ceb90a26fb311ca9eccf5d0a92be164484fb426feb4d84bba0cd
ssdeep: 6144:4hmSpNkx8AsO3X5zCn+foLNBdnAeDoGGD4mMywW:JIkS3O5zC+gT5DGMywW
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Copyright (C) 2017, odfvilxer
InternalName: toalotspring.exe
FileVersion: 5.1
ProductVersion: 5.1.111.0
Translation: 0x0789 0x04b1

Win32/Kryptik.GGEF also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
DrWebBackDoor.Siggen2.2200
MicroWorld-eScanTrojan.GenericKDZ.43749
FireEyeGeneric.mg.5cd37c88953839eb
CAT-QuickHealTrojan.Cloxer.A06
McAfeeGenericRXFE-KE!5CD37C889538
CylanceUnsafe
VIPRETrojan.Win32.Generic!BT
SangforWin.Packed.Gandcrab-6552923-4
K7AntiVirusTrojan ( 005339361 )
BitDefenderTrojan.GenericKDZ.43749
K7GWTrojan ( 005339361 )
Cybereasonmalicious.895383
BitDefenderThetaGen:NN.ZexaF.34590.pu1@ae6IUNoi
CyrenW32/S-7ee84da4!Eldorado
SymantecPacked.Generic.525
APEXMalicious
AvastFileRepMalware
ClamAVWin.Packed.Gandcrab-6552923-4
KasperskyHEUR:Trojan.Win32.Generic
NANO-AntivirusTrojan.Win32.Upatre.favvjk
ViRobotTrojan.Win32.GandCrab.Gen.A
AegisLabHacktool.Win32.CVE-2016-7255.3!c
Ad-AwareTrojan.GenericKDZ.43749
TACHYONRansom/W32.GandCrab
EmsisoftTrojan.GenericKDZ.43749 (B)
ComodoTrojWare.Win32.Crypt.ZA@7mmoiq
F-SecureHeuristic.HEUR/AGEN.1106533
ZillyaDownloader.Upatre.Win32.65935
TrendMicroRansom.Win32.GANDCRAB.SMLA.hp
McAfee-GW-EditionBehavesLike.Win32.Generic.dc
SophosMal/Generic-R + Mal/Agent-AUL
JiangminTrojanSpy.Panda.hr
MaxSecureRansomeware.CRAB.gen
AviraHEUR/AGEN.1106533
Antiy-AVLTrojan/Win32.TSGeneric
MicrosoftRansom:Win32/Gandcrab.SF!MTB
ArcabitTrojan.Generic.DAAE5
SUPERAntiSpywareTrojan.Agent/Gen-Dropper
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.GenericKDZ.43749
CynetMalicious (score: 100)
AhnLab-V3Win-Trojan/Gandcrab.Exp
Acronissuspicious
ALYacTrojan.GenericKDZ.43749
MAXmalware (ai score=100)
VBA32BScope.Trojan.Chapak
MalwarebytesMalware.AI.1770524836
PandaTrj/Genetic.gen
ESET-NOD32a variant of Win32/Kryptik.GGEF
TrendMicro-HouseCallRansom.Win32.GANDCRAB.SMLA.hp
TencentMalware.Win32.Gencirc.114b3c2a
YandexTrojan.GenAsa!Zavy/2LuUmE
SentinelOneStatic AI – Malicious PE
eGambitUnsafe.AI_Score_98%
FortinetW32/GenKryptik.DQHN!tr
AVGFileRepMalware
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (D)
Qihoo-360Win32/Trojan.Ransom.d04

How to remove Win32/Kryptik.GGEF 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.GGEF 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.GGEF 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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