Win32/Kryptik.FWAU

What is Win32/Kryptik.FWAU infection?

In this article you will certainly find about the definition of Win32/Kryptik.FWAU as well as its unfavorable effect on your computer system. Such ransomware are a kind of malware that is specified by online scams to demand paying the ransom money by a victim.

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In the majority of the instances, Win32/Kryptik.FWAU virus will certainly instruct its sufferers to start funds transfer for the objective of counteracting the amendments that the Trojan infection has introduced to the sufferer’s device.

Win32/Kryptik.FWAU Summary

These modifications 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 (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.

  • A process created a hidden window;
  • 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.
  • 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;
  • Enumerates services, possibly for anti-virtualization;
  • 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
  • Attempts to interact with an Alternate Data Stream (ADS);
  • Ciphering the documents situated on the target’s hard disk drive — so the target can no more utilize the information;
  • Preventing normal accessibility to the victim’s workstation;

Win32/Kryptik.FWAU

One of the most regular networks whereby Win32/Kryptik.FWAU Ransomware are injected are:

  • By ways of phishing e-mails;
  • As a repercussion of customer winding up on a resource that organizes a malicious software application;

As soon as the Trojan is successfully injected, it will either cipher the data on the target’s PC or prevent the tool from operating in a correct manner – while likewise putting a ransom note that discusses the need for the targets to effect the payment for the function of decrypting the documents or bring back the data system back to the initial condition. In the majority of instances, the ransom money note will show up when the customer reboots the COMPUTER after the system has currently been damaged.

Win32/Kryptik.FWAU circulation networks.

In various corners of the world, Win32/Kryptik.FWAU grows by jumps and bounds. However, the ransom notes as well as tricks of extorting the ransom money quantity may vary depending upon certain local (regional) setups. The ransom notes and also techniques of extorting the ransom amount might differ depending on particular regional (local) setups.

Ransomware injection

For example:

    Faulty signals about unlicensed software application.

    In certain areas, the Trojans commonly wrongfully report having actually found some unlicensed applications allowed on the target’s gadget. The sharp then requires the customer to pay the ransom.

    Faulty declarations regarding illegal content.

    In countries where software piracy is less preferred, this approach is not as efficient for the cyber fraudulences. Additionally, the Win32/Kryptik.FWAU popup alert might incorrectly assert to be deriving from a law enforcement institution and also will certainly report having situated youngster porn or other illegal data on the tool.

    Win32/Kryptik.FWAU popup alert may incorrectly declare to be obtaining from a regulation enforcement institution and also will report having located kid porn or various other illegal information on the device. The alert will similarly have a demand for the customer to pay the ransom money.

Technical details

File Info:

crc32: E6FA1BA1
md5: 909fe8cad96e1a286d31dcd48c13ae11
name: 909FE8CAD96E1A286D31DCD48C13AE11.mlw
sha1: fdd6daf6c23bc84b974e7b13f6c0a2eb742e3406
sha256: 920f16055521f0c1ba4966d8979d40745404932a8d86e40b782c761027a99e10
sha512: a56d909ed5d817f8dbd6ed463ed91216492015b255d7700200e24a5c41788ba6178d39f7572cb3fc1532f63a0151eb27ff0f8d0b8d1187683d87b5abd918cc88
ssdeep: 3072:S0kNsKUac9221RWoHeV2Dhl/Z5M0mowhLqJBb7q:S5xc9xrHXDZ5M0mQ7q
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Win32/Kryptik.FWAU also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Trojan ( 0051918c1 )
Elastic malicious (high confidence)
Cynet Malicious (score: 100)
ALYac Gen:Heur.Ransom.Lukitos.1
Cylance Unsafe
Sangfor Trojan.Win32.Save.a
CrowdStrike win/malicious_confidence_100% (W)
Alibaba Backdoor:Win32/Tofsee.416fb603
K7GW Trojan ( 00515e9f1 )
Cybereason malicious.ad96e1
ESET-NOD32 a variant of Win32/Kryptik.FWAU
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Ransomware.Locky-6336174-0
Kaspersky HEUR:Trojan.Win32.Generic
BitDefender Gen:Heur.Ransom.Lukitos.1
NANO-Antivirus Trojan.Win32.AD.eskqtv
MicroWorld-eScan Gen:Heur.Ransom.Lukitos.1
Tencent Win32.Trojan.Generic.Hryt
Ad-Aware Gen:Heur.Ransom.Lukitos.1
Sophos ML/PE-A + Mal/Elenoocka-E
Comodo Malware@#9458korihec8
BitDefenderTheta Gen:NN.ZexaF.34628.jqW@a0Gzhpii
VIPRE Trojan.Win32.Generic!BT
TrendMicro Ransom_CERBER.SMALY0
McAfee-GW-Edition Ransomware-GFM!909FE8CAD96E
FireEye Generic.mg.909fe8cad96e1a28
Emsisoft Gen:Heur.Ransom.Lukitos.1 (B)
SentinelOne Static AI – Malicious PE
Jiangmin Trojan.Cryptor.cf
Avira TR/Crypt.ZPACK.Gen7
Microsoft Ransom:Win32/Cerber
AegisLab Trojan.Win32.Injector.b!c
GData Gen:Heur.Ransom.Lukitos.1
AhnLab-V3 Trojan/Win32.Locky.R207537
Acronis suspicious
McAfee Ransomware-GFM!909FE8CAD96E
MAX malware (ai score=100)
VBA32 Trojan.FakeAV.01657
Malwarebytes Ransom.Locky
Panda Trj/Genetic.gen
TrendMicro-HouseCall Ransom_CERBER.SMALY0
Rising Backdoor.Tofsee!8.1E9 (C64:YzY0OkATnxMlz4zI)
Ikarus Trojan.Win32.Filecoder
Fortinet W32/Kryptik.FVZV!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Generic.HxMB8PsA

How to remove Win32/Kryptik.FWAU 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.FWAU 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.FWAU 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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