Backdoor:Win32/Fynloski.K

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

What is Backdoor:Win32/Fynloski.K infection?

In this post you will certainly discover about the definition of Backdoor:Win32/Fynloski.K and its unfavorable effect on your computer system. Such ransomware are a form of malware that is specified by on the internet fraudulences to require paying the ransom money by a victim.

GridinSoft Anti-Malware Review
It is better to prevent, than repair and repent!
When we talk about the intrusion of unfamiliar programs into your computer’s work, the proverb “Forewarned is forearmed” describes the situation as accurately as possible. Gridinsoft Anti-Malware is exactly the tool that is always useful to have in your armory: fast, efficient, up-to-date. It is appropriate to use it as an emergency help at the slightest suspicion of infection.
Gridinsoft Anti-Malware 6-day trial available.
EULA | Privacy Policy | 10% Off Coupon
Subscribe to our Telegram channel to be the first to know about news and our exclusive materials on information security.

Most of the cases, Backdoor:Win32/Fynloski.K infection will certainly instruct its victims to launch funds move for the purpose of counteracting the modifications that the Trojan infection has presented to the sufferer’s gadget.

Backdoor:Win32/Fynloski.K Summary

These alterations 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.
  • 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.

  • 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: Russian;
  • Uses Windows utilities for basic functionality;
  • Sniffs keystrokes;
  • Steals private information from local Internet browsers;
  • 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
  • Interacts with known DarkComet registry keys;
  • Harvests information related to installed instant messenger clients;
  • Harvests information related to installed mail clients;
  • Creates known Fynloski/DarkComet mutexes;
  • 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 papers located on the target’s hard disk drive — so the victim can no longer utilize the information;
  • Preventing regular 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.

Backdoor:Win32/Fynloski.K

One of the most common networks where Backdoor:Win32/Fynloski.K are injected are:

  • By methods of phishing emails;
  • As a repercussion of customer ending up on a resource that hosts a destructive software program;

As quickly as the Trojan is successfully injected, it will certainly either cipher the information on the sufferer’s computer or protect against the device from functioning in an appropriate manner – while additionally positioning a ransom note that mentions the requirement for the targets to impact the payment for the objective of decrypting the records or bring back the documents system back to the initial condition. In many circumstances, the ransom note will certainly come up when the client reboots the COMPUTER after the system has actually currently been harmed.

Backdoor:Win32/Fynloski.K circulation networks.

In numerous edges of the world, Backdoor:Win32/Fynloski.K grows by leaps and bounds. Nevertheless, the ransom money notes as well as methods of obtaining the ransom amount might vary depending on particular regional (local) setups. The ransom notes and techniques of extorting the ransom money quantity might vary depending on certain local (regional) setups.

Ransomware injection

For example:

    Faulty signals regarding unlicensed software application.

    In certain areas, the Trojans often wrongfully report having actually found some unlicensed applications enabled on the victim’s device. The alert then requires the individual to pay the ransom.

    Faulty declarations about unlawful material.

    In nations where software piracy is less preferred, this technique is not as reliable for the cyber fraudulences. Additionally, the Backdoor:Win32/Fynloski.K popup alert might wrongly assert to be stemming from a police organization and will report having located youngster pornography or other illegal data on the tool.

    Backdoor:Win32/Fynloski.K popup alert might falsely claim to be obtaining from a legislation enforcement organization as well as will report having located child porn or other illegal data on the tool. The alert will in a similar way contain a need for the user to pay the ransom.

Technical details

File Info:

crc32: 395252EE
md5: 0a161f0da272d35b00ffc4cf4d5fd970
name: 0A161F0DA272D35B00FFC4CF4D5FD970.mlw
sha1: 00578d1441697aaab679014588cfffc5252788ba
sha256: 7a989335863bcae1fb5ef14954574ef12060e3ab62cf17bbb8ffc4fc193b64cf
sha512: 8c05fdead71a2916871e30af75c4f90588a85b50520031d875888c47cdc247f780db9381c1f06180ccc06969429c43a42c7e5233bd557b09320bf51acea2742f
ssdeep: 24576:ZJlh9bDmK3lrbzLt7T6CctsdqB2Z60TcqE+2zwDQZDb:ZJHJzLt72WqYZdTc+2zzDb
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

0: [No Data]

Backdoor:Win32/Fynloski.K also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
K7AntiVirus Riskware ( 0040eff71 )
DrWeb Trojan.MulDrop7.13664
Cynet Malicious (score: 100)
ALYac Trojan.Rasftuby.Gen.14
Cylance Unsafe
Sangfor Backdoor.Win32.Fynloski.K
Alibaba Trojan:MSIL/Cryptos.21140477
K7GW Riskware ( 0040eff71 )
Cybereason malicious.da272d
Symantec Ransom.Wannacry
APEX Malicious
Avast Win32:Malware-gen
ClamAV Win.Malware.Rasftuby-5838587-0
Kaspersky Trojan.MSIL.Cryptos.cwrs
BitDefender Trojan.Rasftuby.Gen.14
NANO-Antivirus Trojan.Win32.Cryptos.ekqsxc
MicroWorld-eScan Trojan.Rasftuby.Gen.14
Tencent Win32.Backdoor.Bp-darkcomet.Qcpz
Ad-Aware Trojan.Rasftuby.Gen.14
Sophos Mal/Generic-S
VIPRE Trojan.Win32.Generic!BT
McAfee-GW-Edition BehavesLike.Win32.Generic.fc
FireEye Generic.mg.0a161f0da272d35b
Emsisoft Trojan.Rasftuby.Gen.14 (B)
Avira TR/Rasftuby.tvlxv
eGambit Unsafe.AI_Score_99%
Kingsoft Win32.Troj.Cryptos.cw.(kcloud)
Microsoft Backdoor:Win32/Fynloski.K
AegisLab Trojan.Win32.Malicious.4!e
ZoneAlarm HEUR:Trojan.Win32.Generic
GData Trojan.Rasftuby.Gen.14
McAfee Artemis!0A161F0DA272
MAX malware (ai score=100)
VBA32 Trojan.MSIL.Cryptos
Malwarebytes Malware.AI.2580864633
Panda Trj/CI.A
Ikarus Trojan.Rasftuby
Fortinet Backdoor!tr
AVG Win32:Malware-gen
Paloalto generic.ml
Qihoo-360 Win32/Trojan.Generic.HgIASOkA

How to remove Backdoor:Win32/Fynloski.K 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 Backdoor:Win32/Fynloski.K 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 Backdoor:Win32/Fynloski.K you can always ask me in the comments for getting help.

Sending
User Review
0 (0 votes)
Comments Rating 0 (0 reviews)

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.

Leave a Reply

Sending