Win32/Kryptik.GTBW

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

What is Win32/Kryptik.GTBW infection?

In this post you will discover concerning the interpretation of Win32/Kryptik.GTBW and also its negative influence on your computer system. Such ransomware are a kind of malware that is clarified by on the internet frauds to require paying the ransom by a victim.

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In the majority of the situations, Win32/Kryptik.GTBW virus will instruct its victims to initiate funds transfer for the purpose of neutralizing the amendments that the Trojan infection has introduced to the sufferer’s tool.

Win32/Kryptik.GTBW Summary

These adjustments 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.
  • A process attempted to delay the analysis task.;
  • HTTP traffic contains suspicious features which may be indicative of malware related traffic;
  • Performs some HTTP requests;
  • Attempts to repeatedly call a single API many times in order to delay analysis time. This significantly complicates the work of the virus analyzer. Typical malware tactics!
  • Steals private information from local Internet browsers;
  • Collects information about installed applications;
  • Checks the CPU name from registry, possibly for anti-virtualization;
  • Harvests credentials from local FTP client softwares;
  • Harvests information related to installed instant messenger clients;
  • Harvests information related to installed mail clients;
  • 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.
  • Ciphering the documents located on the sufferer’s hard disk drive — so the sufferer can no more use 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.
Similar behavior
Related domains
prohomedevelopers.comRansom:Win32/GandCrab.6329ca5f
ip-api.comRansom:Win32/GandCrab.6329ca5f

Win32/Kryptik.GTBW

The most normal networks whereby Win32/Kryptik.GTBW Ransomware Trojans are infused are:

  • By means of phishing e-mails;
  • As a repercussion of customer ending up on a source that hosts a malicious software program;

As soon as the Trojan is successfully infused, it will certainly either cipher the information on the victim’s computer or protect against the device from operating in an appropriate fashion – while likewise placing a ransom money note that points out the need for the sufferers to impact the payment for the objective of decrypting the records or bring back the documents system back to the first problem. In many circumstances, the ransom money note will turn up when the client restarts the COMPUTER after the system has currently been harmed.

Win32/Kryptik.GTBW circulation networks.

In numerous corners of the world, Win32/Kryptik.GTBW expands by leaps and bounds. Nonetheless, the ransom money notes and techniques of extorting the ransom money amount may vary depending on specific neighborhood (local) setups. The ransom notes and techniques of extorting the ransom money quantity may differ depending on particular local (local) setups.

Ransomware injection

As an example:

    Faulty notifies regarding unlicensed software.

    In specific locations, the Trojans often wrongfully report having actually discovered some unlicensed applications allowed on the victim’s tool. The sharp after that demands the user to pay the ransom.

    Faulty statements about illegal material.

    In countries where software piracy is much less popular, this approach is not as efficient for the cyber fraudulences. Conversely, the Win32/Kryptik.GTBW popup alert may incorrectly claim to be originating from a police institution and will report having located child pornography or other prohibited information on the gadget.

    Win32/Kryptik.GTBW popup alert may falsely assert to be obtaining from a law enforcement establishment and also 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: 6A03C9D1
md5: 91cb55602ee67b9231a18790bc89376e
name: 91CB55602EE67B9231A18790BC89376E.mlw
sha1: fd9bfa22b478a261ec8771828a67f3db9a64e66d
sha256: 74fec34d7fc8b50b4eaec634d29c1af518ce95012f42f011e86ae72ffde31739
sha512: 72d6dbf6c4b72754bf29756bae48d365df3bacc34a325daa6461bffa86eb0ba3f523e145b39efe026f7a57fcf6af8e6dbb8d772868da4e72d7c5a245843e0da0
ssdeep: 24576:CvyaOgBEAWKkjWYhO0VAApuoxt5cWxcNQX:uRWKkqD0VjvBcWeQX
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GTBW also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
K7AntiVirusTrojan ( 0054e2de1 )
Elasticmalicious (high confidence)
DrWebTrojan.PWS.Siggen2.12561
CynetMalicious (score: 100)
ALYacTrojan.Brsecmon.1
CylanceUnsafe
ZillyaTrojan.Kryptik.Win32.1787458
SangforTrojan.Win32.Save.a
CrowdStrikewin/malicious_confidence_100% (D)
AlibabaRansom:Win32/GandCrab.6329ca5f
K7GWTrojan ( 0054e2de1 )
Cybereasonmalicious.02ee67
CyrenW32/Chapak.G.gen!Eldorado
SymantecPacked.Generic.525
ESET-NOD32a variant of Win32/Kryptik.GTBW
APEXMalicious
AvastWin32:Malware-gen
KasperskyHEUR:Trojan.Win32.Generic
BitDefenderTrojan.Brsecmon.1
NANO-AntivirusTrojan.Win32.Kryptik.gcvuod
MicroWorld-eScanTrojan.Brsecmon.1
TencentWin32.Trojan.Generic.Htlz
Ad-AwareTrojan.Brsecmon.1
SophosMal/Generic-S
BitDefenderThetaGen:NN.ZexaF.34690.7yW@aGB6n@i
TrendMicroTrojan.Win32.SODINOK.SM.hp
McAfee-GW-EditionSodinokibi!91CB55602EE6
FireEyeGeneric.mg.91cb55602ee67b92
EmsisoftTrojan.Brsecmon.1 (B)
AviraHEUR/AGEN.1102735
MicrosoftRansom:Win32/GandCrab.AD!MTB
GDataTrojan.Brsecmon.1
AhnLab-V3Trojan/Win32.Agent.C3267759
Acronissuspicious
McAfeeSodinokibi!91CB55602EE6
MAXmalware (ai score=82)
VBA32Trojan.Zonidel
MalwarebytesTrojan.MalPack.GS.Generic
PandaTrj/GdSda.A
TrendMicro-HouseCallTrojan.Win32.SODINOK.SM.hp
RisingRansom.GandCrab!8.F355 (CLOUD)
YandexTrojan.Agent!M+ZmSLZQe7M
IkarusTrojan-Banker.IcedID
MaxSecureRansomeware.CRAB.gen
FortinetW32/Kryptik.GTHD!tr
AVGWin32:Malware-gen
Paloaltogeneric.ml

How to remove Win32/Kryptik.GTBW 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.GTBW 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.GTBW 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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