Win32/Kryptik.GJSR

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

What is Win32/Kryptik.GJSR infection?

In this short article you will certainly locate concerning the interpretation of Win32/Kryptik.GJSR and also its unfavorable effect on your computer system. Such ransomware are a kind of malware that is clarified by on-line frauds to require paying the ransom by a victim.

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Most of the cases, Win32/Kryptik.GJSR ransomware will instruct its sufferers to launch funds transfer for the function of counteracting the changes that the Trojan infection has actually presented to the victim’s gadget.

Win32/Kryptik.GJSR Summary

These alterations 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.
  • 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.
  • Possible date expiration check, exits too soon after checking local time;
  • Unconventionial language used in binary resources: Thai;
  • Collects information to fingerprint the system. There are behavioral human characteristics that can be used to digitally identify a person to grant access to systems, devices, or data. Unlike passwords and verification codes, fingerprints are fundamental parts of user’s identities. Among the threats blocked on biometric data processing and storage systems is spyware, the malware used in phishing attacks (mostly spyware downloaders and droppers), ransomware, and Banking Trojans as posing the greatest danger.
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Ciphering the documents located on the target’s hard disk drive — so the victim can no more utilize 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.

Win32/Kryptik.GJSR

The most typical channels whereby Win32/Kryptik.GJSR are injected are:

  • By means of phishing e-mails;
  • As an effect of user winding up on a source that holds a malicious software program;

As quickly as the Trojan is successfully infused, it will either cipher the data on the sufferer’s PC or stop the device from working in a correct manner – while also positioning a ransom money note that discusses the need for the victims to effect the repayment for the objective of decrypting the files or recovering the data system back to the first condition. In the majority of instances, the ransom note will turn up when the customer restarts the COMPUTER after the system has actually already been damaged.

Win32/Kryptik.GJSR circulation networks.

In numerous corners of the world, Win32/Kryptik.GJSR grows by leaps and bounds. Nonetheless, the ransom notes as well as tricks of extorting the ransom amount might vary depending upon certain local (local) setups. The ransom money notes as well as techniques of obtaining the ransom money amount might differ depending on specific neighborhood (regional) setups.

Ransomware injection

For example:

    Faulty informs about unlicensed software.

    In certain locations, the Trojans frequently wrongfully report having found some unlicensed applications enabled on the victim’s device. The sharp after that requires the individual to pay the ransom money.

    Faulty statements about prohibited web content.

    In nations where software program piracy is much less prominent, this technique is not as efficient for the cyber fraudulences. Conversely, the Win32/Kryptik.GJSR popup alert may falsely claim to be stemming from a law enforcement institution as well as will report having located kid porn or other illegal information on the gadget.

    Win32/Kryptik.GJSR popup alert might wrongly claim to be obtaining from a legislation enforcement establishment and will report having located child pornography or various other unlawful data on the device. The alert will likewise contain a demand for the user to pay the ransom money.

Technical details

File Info:

crc32: BAF240C6
md5: 7875f73f56be5ef8b9dc444b84951c87
name: 7875F73F56BE5EF8B9DC444B84951C87.mlw
sha1: f6c2e74af98930c21a3880b4dda45d5a5ed09846
sha256: 7af4a49422ec24195c03f55204606f7239a5f34482e5ca3d6a35dcd20e08fbd8
sha512: 08546b06cd6b5843f3c4cfec17df6534619aba0f681cee48d8dbd341051bdc922eeda8a62312eb2f482e827acc67c0bb1e31c3f3258f6708eb808588c07991ae
ssdeep: 3072:q+Luae5Bm6u5fesIUzX8f6g/YGB2cbq+ZsuGL82M:5LuPmFexUb8fT/YCllZ9oa
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GJSR also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 00516fdf1 )
Elasticmalicious (high confidence)
DrWebTrojan.PWS.Stealer.23869
CynetMalicious (score: 100)
ALYacTrojan.Brsecmon.1
CylanceUnsafe
ZillyaTrojan.GenericKD.Win32.149479
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (D)
AlibabaTrojan:Win32/Kryptik.4e61fb51
K7GWTrojan ( 00516fdf1 )
Cybereasonmalicious.f56be5
CyrenW32/Kryptik.HQ.gen!Eldorado
ESET-NOD32a variant of Win32/Kryptik.GJSR
APEXMalicious
AvastWin32:MalwareX-gen [Trj]
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.Brsecmon.1
NANO-AntivirusTrojan.Win32.Chapak.fifpih
ViRobotTrojan.Win32.U.GandCrab.160256
SUPERAntiSpywareRansom.GandCrab/Variant
MicroWorld-eScanTrojan.Brsecmon.1
TencentWin32.Trojan.Generic.Aiif
Ad-AwareTrojan.Brsecmon.1
SophosML/PE-A + Mal/GandCrab-B
ComodoTrojWare.Win32.Ransom.GandCrab.AG@7wevet
BitDefenderThetaGen:NN.ZexaF.34608.juW@aGzZK4hG
TrendMicroMal_HPGen-50
McAfee-GW-EditionPacked-FKP!7875F73F56BE
FireEyeGeneric.mg.7875f73f56be5ef8
EmsisoftTrojan.Brsecmon.1 (B)
SentinelOneStatic AI – Suspicious PE
AviraHEUR/AGEN.1107191
eGambitUnsafe.AI_Score_78%
MicrosoftTrojan:Win32/GandCrypt.DSB!MTB
ArcabitTrojan.Brsecmon.1
AegisLabTrojan.Win32.Chapak.4!c
GDataTrojan.Brsecmon.1
AhnLab-V3Win-Trojan/Gandcrab08.Exp
Acronissuspicious
McAfeePacked-FKP!7875F73F56BE
VBA32BScope.Trojan.Vigorf
MalwarebytesTrojan.MalPack
PandaTrj/GdSda.A
TrendMicro-HouseCallMal_HPGen-50
RisingTrojan.Vigorf!8.EAEA (CLOUD)
IkarusTrojan.Win32.Krypt
FortinetW32/Kryptik.HCUD!tr
AVGWin32:MalwareX-gen [Trj]
Paloaltogeneric.ml
Qihoo-360Win32/Trojan.0d1

How to remove Win32/Kryptik.GJSR 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.GJSR 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.GJSR 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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