Win32/Kryptik.GKMR

Written by Robert Bailey

What is Win32/Kryptik.GKMR infection?

In this post you will discover concerning the meaning of Win32/Kryptik.GKMR as well as its adverse influence on your computer system. Such ransomware are a type of malware that is clarified by online frauds to require paying the ransom by a sufferer.

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Most of the situations, Win32/Kryptik.GKMR infection will certainly instruct its targets to initiate funds transfer for the function of reducing the effects of the modifications that the Trojan infection has actually introduced to the target’s device.

Win32/Kryptik.GKMR Summary

These modifications can be as complies with:

  • Injection (inter-process);
  • Injection (Process Hollowing);
  • 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.
  • Reads data out of its own binary image. The trick that allows the malware to read data out of your computer’s memory.

    Everything you run, type, or click on your computer goes through the memory. This includes passwords, bank account numbers, emails, and other confidential information. With this vulnerability, there is the potential for a malicious program to read that data.

  • Executed a process and injected code into it, probably while unpacking;
  • 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
  • Exhibits possible ransomware file modification behavior;
  • 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.
  • Ciphering the papers located on the sufferer’s hard disk — so the sufferer can no more utilize the information;
  • Preventing normal access to the victim’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.GKMR

One of the most regular channels where Win32/Kryptik.GKMR are infused are:

  • By methods of phishing emails;
  • As a consequence of user ending up on a source that organizes a harmful software application;

As soon as the Trojan is effectively infused, it will either cipher the data on the sufferer’s PC or protect against the gadget from working in a correct manner – while also placing a ransom money note that points out the demand for the targets to impact the payment for the purpose of decrypting the files or bring back the file system back to the preliminary condition. In a lot of instances, the ransom note will show up when the customer reboots the PC after the system has actually currently been damaged.

Win32/Kryptik.GKMR distribution networks.

In different edges of the globe, Win32/Kryptik.GKMR expands by jumps and bounds. Nevertheless, the ransom notes and also methods of extorting the ransom amount may vary depending upon specific neighborhood (regional) settings. The ransom notes and also methods of obtaining the ransom money quantity may differ depending on specific neighborhood (local) setups.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software.

    In particular locations, the Trojans commonly wrongfully report having discovered some unlicensed applications allowed on the target’s gadget. The alert after that requires the user to pay the ransom.

    Faulty declarations about unlawful material.

    In nations where software application piracy is much less prominent, this technique is not as reliable for the cyber scams. Conversely, the Win32/Kryptik.GKMR popup alert may incorrectly claim to be deriving from a police organization and will report having situated child pornography or various other prohibited data on the device.

    Win32/Kryptik.GKMR popup alert may wrongly claim to be deriving from a law enforcement establishment and also will report having located kid porn or other illegal data on the device. The alert will in a similar way consist of a need for the customer to pay the ransom money.

Technical details

File Info:

crc32: 5D9E9547
md5: 83bac69d723b466ed3f8c02a1930bcc9
name: 83BAC69D723B466ED3F8C02A1930BCC9.mlw
sha1: 5be34ade4058b15af251f9c9175f8a826928cab5
sha256: 0f6906b9eb39f30b6ecbc4a9b564636d167357af637ca3c7f7d80d161d396c49
sha512: ef604caaacb0f1431785cbb2e47da413aa7fa30cae4670ffdf1ff8723061cc4525361a6179d3d7b14abd656ca74b1bde92552d71c66c5feff7dd41ebeb126d32
ssdeep: 12288:/OBxP031RhqMbZ130zVVj7v350cyzVjVmh2UyKQyVbjYGYVy5bHsbDK9Oy4W68E:/c031RhqMbOyzVjVmh2UyKQyVbjN5bG
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.GKMR also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 00539e201 )
Elastic malicious (high confidence)
DrWeb Trojan.Encoder.567
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.Mauvaise.SL1
ALYac Trojan.Ransom.Cryakl
Cylance Unsafe
Zillya Trojan.GenericKD.Win32.145949
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_80% (D)
Alibaba Trojan:Win32/Cryakl.0b69a4b8
K7GW Trojan ( 00539e201 )
Cybereason malicious.d723b4
Symantec ML.Attribute.HighConfidence
ESET-NOD32 a variant of Win32/Kryptik.GKMR
Zoner Trojan.Win32.69187
APEX Malicious
Avast Win32:Trojan-gen
Kaspersky Trojan-Ransom.Win32.Cryakl.art
BitDefender Gen:Variant.Cerbu.12327
NANO-Antivirus Trojan.Win32.GenKryptik.fgiymf
MicroWorld-eScan Gen:Variant.Cerbu.12327
Tencent Malware.Win32.Gencirc.114d38a8
Ad-Aware Gen:Variant.Cerbu.12327
Sophos Mal/Generic-R + Troj/Ransom-EZX
Comodo Malware@#2u67uro08g09b
F-Secure Heuristic.HEUR/AGEN.1103329
BitDefenderTheta Gen:NN.ZexaF.34690.VyZ@aW3dNWpe
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom.Win32.CRYAKL.THABABAH
McAfee-GW-Edition BehavesLike.Win32.Dropper.bc
FireEye Generic.mg.83bac69d723b466e
Emsisoft Gen:Variant.Cerbu.12327 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Cryakl.lh
Avira HEUR/AGEN.1103329
eGambit Unsafe.AI_Score_99%
Antiy-AVL Trojan/Generic.ASMalwS.27614A6
Kingsoft Win32.Heur.KVMH017.a.(kcloud)
Microsoft Trojan:Win32/Dejandet.G!MTB
Arcabit Trojan.Cerbu.D3027
AegisLab Trojan.Win32.Cryakl.j!c
ZoneAlarm Trojan-Ransom.Win32.Cryakl.art
GData Gen:Variant.Cerbu.12327
AhnLab-V3 Trojan/Win32.Agent.C2655805
McAfee GenericRXGH-MZ!83BAC69D723B
MAX malware (ai score=99)
VBA32 BScope.Trojan.Encoder
Malwarebytes MachineLearning/Anomalous.100%
Panda Trj/GdSda.A
TrendMicro-HouseCall Ransom.Win32.CRYAKL.THABABAH
Rising Ransom.Cryakl!8.560 (CLOUD)
Yandex Trojan.Cryakl!1zxdp3Dc0Ro
Ikarus Trojan-Spy.Agent
Fortinet W32/Generic.AP.1D8526!tr
AVG Win32:Trojan-gen
Paloalto generic.ml

How to remove Win32/Kryptik.GKMR 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.GKMR 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.GKMR 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/products/

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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