Win32/Kryptik.GJBB

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

What is Win32/Kryptik.GJBB infection?

In this article you will discover regarding the meaning of Win32/Kryptik.GJBB as well as its unfavorable impact on your computer system. Such ransomware are a form of malware that is specified by on the internet scams to demand paying the ransom by a victim.

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Most of the situations, Win32/Kryptik.GJBB ransomware will instruct its targets to initiate funds transfer for the function of reducing the effects of the amendments that the Trojan infection has presented to the victim’s device.

Win32/Kryptik.GJBB 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.
  • Unconventionial language used in binary resources: Danish;
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Exhibits possible ransomware file modification behavior;
  • 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.
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Attempts to modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Ciphering the files found on the victim’s hard drive — so the victim can no more make use of the information;
  • Preventing routine access to the sufferer’s workstation;

Win32/Kryptik.GJBB

The most typical channels where Win32/Kryptik.GJBB Ransomware Trojans are injected are:

  • By ways of phishing e-mails;
  • As a consequence of individual ending up on a resource that hosts a destructive software program;

As soon as the Trojan is successfully infused, it will certainly either cipher the information on the victim’s computer or avoid the gadget from functioning in a proper fashion – while additionally positioning a ransom note that discusses the requirement for the victims to impact the settlement for the purpose of decrypting the files or recovering the documents system back to the preliminary problem. In the majority of instances, the ransom money note will certainly show up when the customer reboots the PC after the system has currently been damaged.

Win32/Kryptik.GJBB distribution networks.

In various edges of the globe, Win32/Kryptik.GJBB grows by leaps and also bounds. Nevertheless, the ransom money notes as well as methods of extorting the ransom quantity may differ relying on specific neighborhood (regional) setups. The ransom notes and also techniques of obtaining the ransom money amount may vary depending on particular regional (regional) settings.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software.

    In particular locations, the Trojans commonly wrongfully report having actually discovered some unlicensed applications made it possible for on the victim’s device. The alert after that demands the customer to pay the ransom money.

    Faulty statements about prohibited web content.

    In nations where software application piracy is much less prominent, this method is not as effective for the cyber scams. Alternatively, the Win32/Kryptik.GJBB popup alert might wrongly claim to be stemming from a law enforcement institution as well as will certainly report having located child porn or other illegal data on the tool.

    Win32/Kryptik.GJBB popup alert may falsely declare to be obtaining from a regulation enforcement organization as well as will report having situated child porn or other unlawful data on the device. The alert will similarly consist of a requirement for the user to pay the ransom money.

Technical details

File Info:

crc32: 55E0BFFC
md5: d2972d16f992c2c988da037fc92ab107
name: D2972D16F992C2C988DA037FC92AB107.mlw
sha1: 0f5c081b974bde7a04307ae16d124dd7e70f9b54
sha256: 7addd355df5837c6f8f3a366734e34f03a34bc92208a6b9e6911e52cc47de5e5
sha512: 9cab59302ba117865ee5152b5785f5d34e471f201226da17088675472324845d1f604ae6c5cea280b64ca5445af0579f91f59ef9e8327c478fdee8725c402d94
ssdeep: 3072:/2E3DgusyzYoHdVsyJB+OMR2JycSuunFvlLqqvnLm7ndUsN3:/l3DcycWdV/zsznFPni7ndUE3
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GJBB also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 0053305e1 )
Elasticmalicious (high confidence)
DrWebTrojan.Encoder.24384
CynetMalicious (score: 100)
CAT-QuickHealTrojan.Chapak.ZZ5
ALYacTrojan.Ransom.GandCrab
CylanceUnsafe
ZillyaTrojan.GenericKD.Win32.131207
CrowdStrikewin/malicious_confidence_100% (D)
AlibabaTrojan:Win32/Kryptik.bf8e9395
K7GWTrojan ( 0053305e1 )
Cybereasonmalicious.6f992c
CyrenW32/S-dfe45c5a!Eldorado
SymantecPacked.Generic.525
ESET-NOD32a variant of Win32/Kryptik.GJBB
APEXMalicious
AvastFileRepMalware
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.Mint.Jamg.C
NANO-AntivirusTrojan.Win32.Encoder.ffokni
ViRobotTrojan.Win32.R.Agent.261632.L
MicroWorld-eScanTrojan.Mint.Jamg.C
TencentWin32.Trojan.Gandcrypt.Wqmp
Ad-AwareTrojan.Mint.Jamg.C
SophosMal/Generic-R + Mal/GandCrab-B
ComodoTrojWare.Win32.Quant.GJ@7r6qgk
BitDefenderThetaGen:NN.ZexaF.34608.pyW@amFnPTgG
TrendMicroMal_HPGen-37b
McAfee-GW-EditionBehavesLike.Win32.Trojan.dh
FireEyeGeneric.mg.d2972d16f992c2c9
EmsisoftTrojan.Mint.Jamg.C (B)
SentinelOneStatic AI – Malicious PE
AviraTR/GandCrab.gls
eGambitUnsafe.AI_Score_99%
MicrosoftTrojan:Win32/Skeeyah.A!rfn
ArcabitTrojan.Mint.Jamg.C
AegisLabTrojan.Win32.GandCrypt.j!c
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.Mint.Jamg.C
AhnLab-V3Win-Trojan/Gandcrab04.Exp
Acronissuspicious
McAfeeTrojan-FPSR!D2972D16F992
MAXmalware (ai score=82)
VBA32BScope.TrojanRansom.GandCrypt
MalwarebytesMalware.Heuristic.1001
PandaTrj/Genetic.gen
TrendMicro-HouseCallMal_HPGen-37b
RisingRansom.GandCrypt!8.F33E (CLOUD)
IkarusTrojan.Win32.Crypt
MaxSecureRansomeware.CRAB.gen
FortinetW32/Kryptik.HDRT!tr
AVGFileRepMalware
Paloaltogeneric.ml
Qihoo-360Win32/Ransom.GandCrab.HgIASOoA

How to remove Win32/Kryptik.GJBB ransomware?

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.GJBB 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.GJBB 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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