Win32/Kryptik.GIGF

Written by Robert Bailey

What is Win32/Kryptik.GIGF infection?

In this post you will find regarding the definition of Win32/Kryptik.GIGF and also its adverse effect on your computer. Such ransomware are a form of malware that is elaborated by online scams to require paying the ransom by a target.

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In the majority of the instances, Win32/Kryptik.GIGF infection will certainly advise its victims to launch funds move for the objective of neutralizing the modifications that the Trojan infection has actually presented to the sufferer’s gadget.

Win32/Kryptik.GIGF Summary

These alterations 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.
  • Injection (inter-process);
  • Injection with CreateRemoteThread in a remote process;
  • 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.
  • Mimics the system’s user agent string for its own requests;
  • Repeatedly searches for a not-found process, may want to run with startbrowser=1 option;
  • 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.

  • Unconventionial language used in binary resources: Danish;
  • 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;
  • Detects Sandboxie through the presence of a library;
  • Detects the presence of Wine emulator via function name;
  • 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!
  • Creates or sets a registry key to a long series of bytes, possibly to store a binary or malware config;
  • 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
  • Attempts to identify installed analysis tools by a known file location;
  • Checks for the presence of known devices from debuggers and forensic tools;
  • Detects the presence of Wine emulator via registry key;
  • Detects Sandboxie using a known mutex;
  • Checks for a known DeepFreeze Frozen State Mutex;
  • 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 files found on the victim’s disk drive — so the victim can no longer utilize the data;
  • Preventing routine accessibility 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.GIGF

The most common channels whereby Win32/Kryptik.GIGF Ransomware are infused are:

  • By methods of phishing emails;
  • As an effect of customer ending up on a source that hosts a harmful software program;

As quickly as the Trojan is effectively injected, it will certainly either cipher the information on the target’s computer or prevent the tool from working in a correct way – while likewise placing a ransom note that states the requirement for the victims to impact the repayment for the purpose of decrypting the papers or restoring the data system back to the initial condition. In the majority of instances, the ransom note will show up when the client restarts the PC after the system has actually currently been damaged.

Win32/Kryptik.GIGF distribution channels.

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

Ransomware injection

For instance:

    Faulty notifies regarding unlicensed software.

    In particular locations, the Trojans often wrongfully report having identified some unlicensed applications enabled on the sufferer’s tool. The alert then requires the individual to pay the ransom.

    Faulty statements concerning unlawful material.

    In countries where software piracy is less prominent, this method is not as effective for the cyber frauds. Alternatively, the Win32/Kryptik.GIGF popup alert might falsely assert to be deriving from a law enforcement institution as well as will report having situated kid pornography or other unlawful data on the tool.

    Win32/Kryptik.GIGF popup alert may wrongly declare to be deriving from a law enforcement organization and also will report having situated child porn or various other illegal data on the gadget. The alert will likewise include a need for the individual to pay the ransom money.

Technical details

File Info:

crc32: 36E1DC21
md5: 5c66cf735908b59e8165b49c1fa3a1f4
name: 5C66CF735908B59E8165B49C1FA3A1F4.mlw
sha1: 409615872e044bccd94a76f57abf8545fae3bb8d
sha256: 50b86e6eda1f40d91ed668485f9e36ecfe716f2de511fe8de33e8735de780f97
sha512: c0c9913dcbfcb36b6e57dcc9cccd3e60978fc7c8e544dd459aff99243513f5f7cd5525a45c22eb13336cf438747613217ac0bf836b8314b82dc93aa98f570b53
ssdeep: 3072:6b/UANltDTWBPq2HG/ryKZ4zBN8rWf9whFGSrSVCn9jWiCCbdjcyJqN:6bFltDiBi2HSyKZYurOgGS2Qq83
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

Translation: 0x3245 0xa910

Win32/Kryptik.GIGF also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 00516fdf1 )
Elastic malicious (high confidence)
DrWeb Trojan.PWS.Stealer.23949
Cynet Malicious (score: 100)
CAT-QuickHeal Trojan.Chapak.ZZ5
ALYac Trojan.GenericKDZ.45008
Cylance Unsafe
Zillya Trojan.GandCrypt.Win32.465
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (D)
Alibaba Trojan:Win32/GandCrypt.4cdea656
K7GW Trojan ( 00535f5f1 )
Cybereason malicious.35908b
Cyren W32/Ransom.KH.gen!Eldorado
Symantec Packed.Generic.525
ESET-NOD32 a variant of Win32/Kryptik.GIGF
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Packer.Crypter-6539596-1
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Trojan.GenericKDZ.45008
NANO-Antivirus Trojan.Win32.Ransom.fenypn
SUPERAntiSpyware Trojan.Agent/Gen-Dropper
MicroWorld-eScan Trojan.GenericKDZ.45008
Tencent Win32.Trojan.Chapak.Sxoo
Ad-Aware Trojan.GenericKDZ.45008
Sophos Mal/Generic-R + Mal/GandCrab-B
Comodo TrojWare.Win32.Vigorf.DS@7q649q
F-Secure Heuristic.HEUR/AGEN.1121589
BitDefenderTheta Gen:NN.ZexaF.34670.ouW@aeaNf8gO
TrendMicro Ransom_HPGANDCRAB.SMG2
McAfee-GW-Edition BehavesLike.Win32.Generic.dc
FireEye Generic.mg.5c66cf735908b59e
Emsisoft Trojan.GenericKDZ.45008 (B)
SentinelOne Static AI – Malicious PE
Jiangmin TrojanDownloader.Upatre.ajjg
Avira HEUR/AGEN.1121589
eGambit Unsafe.AI_Score_99%
Antiy-AVL Trojan/Win32.TSGeneric
Microsoft Trojan:Win32/GandCrypt.PVP!MTB
Arcabit Trojan.Generic.DAFD0
AegisLab Trojan.Win32.Generic.4!c
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.GenericKDZ.45008
AhnLab-V3 Win-Trojan/Gandcrab02.Exp
Acronis suspicious
McAfee Trojan-FPST!5C66CF735908
MAX malware (ai score=99)
VBA32 TrojanPSW.Coins
Malwarebytes Trojan.MalPack
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom_HPGANDCRAB.SMG2
Rising Dropper.Generic!8.35E (CLOUD)
Yandex Trojan.GandCrypt!v6YTpX5+z7c
Ikarus Trojan-Ransom.GandCrab
MaxSecure Ransomeware.CRAB.gen
Fortinet W32/Kryptik.GIFD!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Ransom.GandCrab.HwoCEpsA

How to remove Win32/Kryptik.GIGF 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.GIGF 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.GIGF 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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