Win32/Kryptik.GARU

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

What is Win32/Kryptik.GARU infection?

In this article you will locate regarding the definition of Win32/Kryptik.GARU as well as its negative effect on your computer system. Such ransomware are a kind of malware that is clarified by online frauds to demand paying the ransom by a target.

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Most of the cases, Win32/Kryptik.GARU virus will certainly instruct its victims to start funds transfer for the objective of reducing the effects of the amendments that the Trojan infection has introduced to the target’s tool.

Win32/Kryptik.GARU 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.
  • 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.
  • Drops a binary and executes it. Trojan-Downloader installs itself to the system and waits until an Internet connection becomes available to connect to a remote server or website in order to download additional malware onto the infected computer.
  • Unconventionial language used in binary resources: Spanish (Guatemala);
  • The binary likely contains encrypted or compressed data. In this case, encryption is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses Windows utilities for basic functionality;
  • Deletes its original binary from disk;
  • 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!
  • 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.
  • Creates a copy of itself;
  • Anomalous binary characteristics. This is a way of hiding virus’ code from antiviruses and virus’ analysts.
  • Uses suspicious command line tools or Windows utilities;
  • Ciphering the files found on the sufferer’s hard disk — so the sufferer can no longer make use of the data;
  • Preventing routine 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.
Similar behavior
Related domains
z.whorecord.xyzRansom:Win32/Gandcrab.18693d8e
a.tomx.xyzRansom:Win32/Gandcrab.18693d8e

Win32/Kryptik.GARU

The most regular networks where Win32/Kryptik.GARU Trojans are injected are:

  • By methods of phishing e-mails. Email phishing is a cyber attack that uses disguised email as a goal is to trick the recipient into believing that the message is something they want or need — a request from their bank, for instance, or a note from someone in their company — and to click a link for download a malware.
  • As a repercussion of customer winding up on a source that hosts a destructive software program;

As soon as the Trojan is efficiently infused, it will certainly either cipher the data on the sufferer’s computer or stop the device from operating in a correct fashion – while additionally positioning a ransom note that states the requirement for the victims to effect the settlement for the objective of decrypting the papers or bring back the data system back to the initial problem. In most circumstances, the ransom note will turn up when the customer reboots the COMPUTER after the system has actually already been damaged.

Win32/Kryptik.GARU circulation networks.

In various corners of the world, Win32/Kryptik.GARU expands by leaps and bounds. Nevertheless, the ransom notes as well as techniques of extorting the ransom money quantity might differ depending upon certain neighborhood (regional) setups. The ransom notes as well as tricks of extorting the ransom money quantity might vary depending on particular regional (local) setups.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software.

    In particular locations, the Trojans typically wrongfully report having detected some unlicensed applications allowed on the victim’s tool. The sharp after that demands the individual to pay the ransom money.

    Faulty declarations regarding prohibited content.

    In countries where software program piracy is less preferred, this approach is not as effective for the cyber frauds. Additionally, the Win32/Kryptik.GARU popup alert may incorrectly declare to be stemming from a law enforcement establishment and also will certainly report having situated child porn or other illegal information on the device.

    Win32/Kryptik.GARU popup alert may incorrectly assert to be obtaining from a regulation enforcement institution as well as will report having located youngster porn or other unlawful information on the gadget. The alert will likewise contain a requirement for the individual to pay the ransom money.

Technical details

File Info:

crc32: F7EF39D7
md5: d4b5e77f94b3197265b2cd5d9d2ba9a4
name: D4B5E77F94B3197265B2CD5D9D2BA9A4.mlw
sha1: a93facafeb795f9ffb25c868b7ec5934c98cc9e6
sha256: 4e41bedd2bb7e7a492b90153615c59f9daed5b609ab6908751abfa1944406fd4
sha512: 6ffb3188326b5bdbc8631aedc20670b8221ddbfe3de1d955acd72e5c1906be63567a592db6e26c035be2ed8e10ad5eeab227df119a9b54f8719bb2c03c5ef250
ssdeep: 12288:Vfd2BoByn6KV1i3liKKzzI4L8Iid8AtcIaOJB1cr:VuOyTmBKPdLtQXESvcr
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GARU also known as:

GridinSoftTrojan.Ransom.Gen
BkavW32.AIDetect.malware1
Elasticmalicious (high confidence)
MicroWorld-eScanTrojan.BRMon.Gen.4
FireEyeGeneric.mg.d4b5e77f94b31972
CAT-QuickHealTrojan.Chapak.ZZ5
ALYacTrojan.BRMon.Gen.4
CylanceUnsafe
SangforTrojan.Win32.Save.a
K7AntiVirusTrojan ( 0053305e1 )
BitDefenderTrojan.BRMon.Gen.4
K7GWTrojan ( 0053305e1 )
Cybereasonmalicious.f94b31
SymantecPacked.Generic.525
APEXMalicious
AvastFileRepMalware
ClamAVWin.Trojan.Emotet-6433781-0
KasperskyHEUR:Trojan.Win32.Generic
AlibabaRansom:Win32/Gandcrab.18693d8e
NANO-AntivirusTrojan.Win32.Kryptik.exqutl
AegisLabTrojan.Win32.Generic.4!c
Ad-AwareTrojan.BRMon.Gen.4
EmsisoftTrojan.BRMon.Gen.4 (B)
ComodoTrojWare.Win32.Crypt.BF@7gchou
F-SecureTrojan.TR/Dropper.Gen
VIPRETrojan.Win32.Generic!BT
TrendMicroRansom_HPGANDCRAB.SMG2
McAfee-GW-EditionBehavesLike.Win32.Generic.hc
MaxSecureRansomeware.CRAB.gen
SophosMal/Generic-S + Mal/Ransom-FN
SentinelOneStatic AI – Malicious PE
JiangminTrojanSpy.Zbot.flkw
AviraTR/Dropper.Gen
Antiy-AVLTrojan/Win32.AGeneric
MicrosoftRansom:Win32/Gandcrab.SF!MTB
ArcabitTrojan.BRMon.Gen.4
ZoneAlarmHEUR:Trojan.Win32.Generic
GDataTrojan.BRMon.Gen.4
CynetMalicious (score: 100)
AhnLab-V3Win-Trojan/MalPe34.Suspicious.X2029
Acronissuspicious
McAfeeGeneric.cyt
MAXmalware (ai score=98)
VBA32Trojan.Pynamer
MalwarebytesMachineLearning/Anomalous.96%
PandaTrj/CI.A
ESET-NOD32a variant of Win32/Kryptik.GARU
TrendMicro-HouseCallRansom_HPGANDCRAB.SMG2
RisingMalware.Obscure/Heur!1.A89E (CLOUD)
YandexTrojan.GenAsa!3fO7HWDeEyU
IkarusTrojan.Win32.Crypt
eGambitUnsafe.AI_Score_99%
FortinetW32/Kryptik.GBHF!tr
BitDefenderThetaGen:NN.ZexaF.34590.HuW@a0YsSl!
AVGFileRepMalware
Paloaltogeneric.ml
CrowdStrikewin/malicious_confidence_100% (W)
Qihoo-360HEUR/QVM10.2.D201.Malware.Gen

How to remove Win32/Kryptik.GARU ransomware?

Unwanted application has ofter come with other viruses and spyware. This threats can steal account credentials, or crypt your documents for ransom.
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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.GARU 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:

Full version of GridinSoft

Full version of GridinSoft Anti-Malware

If the guide doesn’t help you to remove Win32/Kryptik.GARU 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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