Written by Robert Bailey

What is Win32/Kryptik.GVAX infection?

In this short article you will find concerning the interpretation of Win32/Kryptik.GVAX as well as its adverse effect on your computer. Such ransomware are a kind of malware that is elaborated by on-line fraudulences to demand paying the ransom money by a sufferer.

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Most of the cases, Win32/Kryptik.GVAX infection will certainly advise its victims to launch funds transfer for the objective of reducing the effects of the modifications that the Trojan infection has introduced to the victim’s gadget.

Win32/Kryptik.GVAX Summary

These modifications can be as adheres to:

  • 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.
  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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: Russian;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents found on the victim’s hard disk drive — so the sufferer can no more make use of the information;
  • Preventing normal access 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.


One of the most typical networks where Win32/Kryptik.GVAX Ransomware Trojans are infused are:

  • By methods of phishing emails;
  • As a repercussion of customer winding up on a source that hosts a destructive software application;

As quickly as the Trojan is successfully injected, it will either cipher the data on the target’s PC or avoid the tool from working in an appropriate way – while likewise putting a ransom money note that discusses the need for the sufferers to effect the settlement for the objective of decrypting the documents or restoring the data system back to the first problem. In the majority of circumstances, the ransom note will show up when the client reboots the COMPUTER after the system has currently been damaged.

Win32/Kryptik.GVAX circulation channels.

In different corners of the world, Win32/Kryptik.GVAX expands by jumps as well as bounds. However, the ransom money notes as well as techniques of obtaining the ransom amount may vary depending upon certain regional (local) settings. The ransom money notes as well as methods of obtaining the ransom money quantity might differ depending on certain neighborhood (regional) settings.

Ransomware injection

For example:

    Faulty alerts regarding unlicensed software program.

    In certain locations, the Trojans commonly wrongfully report having actually found some unlicensed applications allowed on the target’s gadget. The alert after that demands the individual to pay the ransom.

    Faulty declarations about illegal web content.

    In nations where software piracy is much less prominent, this technique is not as efficient for the cyber scams. Additionally, the Win32/Kryptik.GVAX popup alert may incorrectly assert to be deriving from a police institution as well as will certainly report having situated kid pornography or various other unlawful data on the device.

    Win32/Kryptik.GVAX popup alert might falsely assert to be deriving from a law enforcement institution as well as will report having located kid pornography or various other illegal information on the gadget. The alert will similarly include a need for the user to pay the ransom.

Technical details

File Info:

crc32: 0FF13A9F
md5: 97cbd99bafda2c1207bb930be8c83bf7
name: 97CBD99BAFDA2C1207BB930BE8C83BF7.mlw
sha1: 98f6a64d20ab0ce9d40a56371b8392f4ee42f8c6
sha256: 984ab421576219b21ed4e2cf6ce35fe7a9995cafc6df793a121b11e22a64770a
sha512: f140414159cdb6a467f155e798c19304a15ca943094fe8bb06d6ae0a934aa4a182a3c102bb3263cfdbc62bfdd4931cc1b5c3b719880108614ad36c04fd473f34
ssdeep: 3072:Zl29MaGtI5PoFWhi1sHTkQZYNqlKLXnRp:Zl29MIMGajLXT
type: PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows

Version Info:

FileVersion: 2.66
CompanyName: NirSoft
ProductName: NirCmd
ProductVersion: 2.66
FileDescription: NirCmd
OriginalFilename: NirCmd.exe
Translation: 0x0409 0x04b0

Win32/Kryptik.GVAX also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware2
K7AntiVirus Trojan ( 004f8bc31 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.5047
Cynet Malicious (score: 100)
ALYac Trojan.Ransom.Cerber
Cylance Unsafe
Zillya Trojan.CryptXXX.Win32.638
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Ransom:Win32/CryptXXX.751d01e4
K7GW Trojan ( 004f8bc31 )
Cybereason malicious.bafda2
Cyren W32/S-b308e227!Eldorado
Symantec Ransom.CryptXXX!g17
ESET-NOD32 a variant of Win32/Kryptik.GVAX
APEX Malicious
Avast Win32:Malware-gen
Kaspersky Trojan-Ransom.Win32.CryptXXX.asdgxe
BitDefender Gen:Variant.Ransom.CryptXXX.1
NANO-Antivirus Trojan.Win32.Kryptik.fjnrhj
MicroWorld-eScan Gen:Variant.Ransom.CryptXXX.1
Tencent Malware.Win32.Gencirc.10b589a7
Ad-Aware Gen:Variant.Ransom.CryptXXX.1
Sophos Mal/Generic-S
Comodo Malware@#qx2xcqdwv05n
BitDefenderTheta Gen:NN.ZexaF.34686.gy1@a0YXMDjU
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_HPCRYPMIC.SM4
Emsisoft Gen:Variant.Ransom.CryptXXX.1 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.CryptXXX.adn
Avira HEUR/AGEN.1128192
eGambit Unsafe.AI_Score_99%
Microsoft Ransom:Win32/Tovicrypt!rfn
AegisLab Trojan.Win32.CryptXXX.4!c
GData Gen:Variant.Ransom.CryptXXX.1
AhnLab-V3 Trojan/Win32.CryptXXX.R188042
Acronis suspicious
McAfee Artemis!97CBD99BAFDA
MAX malware (ai score=100)
VBA32 TrojanRansom.Tovicrypt
Malwarebytes Ransom.CryptXXX
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom_HPCRYPMIC.SM4
Rising Ransom.CryptXXX!8.5DF0 (CLOUD)
Yandex Trojan.GenAsa!rPlCHhCY5Gw
Ikarus Trojan-Ransom.Tovicrypt
Fortinet W32/Kryptik.FNZR!tr
AVG Win32:Malware-gen

How to remove Win32/Kryptik.GVAX 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.GVAX 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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Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Kryptik.GVAX you can always ask me in the comments for getting help.

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About the author

Robert Bailey

Security Engineer. Interested in malware, reverse engineering, white ethical hacking. I like coding, travelling and bikes.

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