.492 Virus Removal Instructions (Complete Guide)

The .492 Virus is a dangerous ransomware that encrypts sensitive files with the .492 extension, read our removal guide to learn more about it.

Manual Removal Guide
Recover .492 Virus Files
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How Does .492 Virus Infiltrate the System?

The .492 virus is a dangerous ransomware that uses a variety of different methods used to infect the intended targets. The hackers behind use the most popular ways of spreading malware.

The majority of hacker attacks carrying the .492 virus use email messages utilizing social engineering tricks. The primary goal of the criminals is to make the users infect themselves. This is done by either clicking on inserted hyperlinks or executing file attachments. The majority of the messages usually pose as coming from popular companies or government agencies.

Some of the detected instances pose as payment receipts or other financial documents. Like other similar ransomware it employs archive files designed using the ZIP extension. The messages use random names. Examples include: A23402.zip, P232290.zip, P111230.zip and others. Some of the detected strains contain no body content and simply deliver the file attachments directly.

Other delivery methods include infected software bundlesweb scripts. Its important to note that usually hacker-controlled sites are responsible for the delivery. The criminals create download portals that imitate legitimate sources. Often P2P networks like BitTorrent are also used. The infected software installers are modified executables of popular applications.

Web scripts that can lead to an infection include browser hijackers, ad networks and redirects. Of them the browser hijackers are probably the most dangerous malware instances. They represent malicious web browser extensions that modify essential settings: the default home page, search engine and new tabs page. They are changed to a hacker-provided address that is capable of infecting the users with malware, including the .492 virus.

Related: .726 Virus, .725 Virus

Infection Flow of .492 Virus Virus

The .492 virus features most of the typical behavior patterns associated with ransomware of this type. The initial code analysis shows that this is a yet another Globe imposter strain that follows the usual attack mechanism. No information is available about the hacker or criminal collective behind it.

Upon infection the virus engine is immediately started. Before launching the encryption process several Windows changes can be enforced:

  • Microsoft Windows Registry Changes ‒ The virus engine is able to modify essential registry settings. This can cause a persistent state of execution, a way of countering manual user removal attempts. The virus engine can monitor the behavior of the victims and actively defend itself against deletion. Registry changes can also lead to system stability and performance issues.
  • Shadow Volume Copies Deletion ‒ The .492 virus may delete the found Shadow Volume copies on the local computer which can counter data recovery attempts. The affected data can be restored using a professional-grade software. We have outlined this in our detailed removal guide.
  • Files Modifications ‒ System-wide modifications can lead to modification of important Windows files.

The .492 virus starts the ransomware encryption engine soon after the initial infection is complete. Unlike other similar malware it employs a predefined “white list” of files and directories that are skipped. This is done in order not to cause any harm to the critical operating system components. The collected samples showcase the following names as part of it:

Windows, Microsoft, Microsoft Help, Windows App Certification Kit, Windows Defender, ESET, COMODO, Windows NT, Windows Kits, Windows Mail, Windows Media Player, Windows Multimedia Platform, Windows Phone Kits, Windows Phone Silverlight Kits, Windows Photo Viewer, Windows Portable Devices, Windows Sidebar, WindowsPowerShell, Temp, NVIDIA Corporation, Microsoft.NET, Internet Explorer, Kaspersky Lab, McAfee, Avira, spytech software, sysconfig, Avast, Dr.Web, Symantec, Symantec_Client_Security, system volume information, AVG, Microsoft Shared, Common Files, Outlook Express, Movie Maker, Chrome, Mozilla Firefox, Opera, YandexBrowser, ntldr, Wsus, ProgramData

The encryption engine itself uses a predefined list of target file type extensions that are encrypted with a strong cipher. We have been able to extract the target extensions from the available samples:

.$er .4db .4dd .4d .4mp .abs .abx .accdb .accdc .accde .accdr .accdt .accdw .accft .adn .adp .aft .ahd .alf .ask .awdb .azz .bdb .bib .bnd
.bok .btr .cdb .cdb .cdb .ckp .clkw .cma .crd .daconnections .dacpac .dad .dadiagrams .daf .daschema .db .db-shm .db-.wa .db2 .db3 .dbc .dbf .dbf .dbk .dbs .dbt .dbv .dbx .dcb .dct .dcx .dd .df1 .dmo .dnc .dp1 .dqy .dsk .dsn .dta .dtsx .dx
.eco .ecx .edb .emd .eq .fcd .fdb .fic .fid .fi .fm5 .fmp .fmp12 .fmps .fo .fp3 .fp4 .fp5 .fp7 .fpt .fzb .fzv .gdb .gwi .hdb
.his .ib .idc .ihx .itdb .itw .jtx .kdb .lgc .maq .mdb .mdbhtm .mdf .mdn .mdt .mrg .mud .mwb .myd .ndf .ns2 .ns3 .ns4 .nsf .nv2
.nyf .oce .odb .oqy .ora .orx .owc .owg .oyx .p96 .p97 .pan .pdb .pdm .phm .pnz .pth .pwa .qpx .qry .qvd .rctd .rdb .rpd .rsd .sbf
.sdb .sdf .spq .sqb .sq .sqlite .sqlite3 .sqlitedb .str .tcx .tdt .te .teacher .tmd .trm .udb .usr .v12 .vdb .vpd .wdb .wmdb .xdb .xld .xlgc .zdb .zdc

All affected data is renamed using the .492 extension. Depending on the acquired version the .492 virus can generate a different ransomware note. The captured strains so far generate a here_your_files!.html note that reads the following message:

All your files have been encrypted!

All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail file_free@protonmail.com in body of your message write your ID

Free decryption as guarantee

Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases, backups, large excel sheets, etc.)

How to obtain Bitcoins

The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click ‘Buy bitcoins’, and select the seller by payment method and price.

https://localbitcoins.com/buy_bitcoins

Also you can find other places to buy Bitcoins and beginners guide here:

How Can I Buy Bitcoins?

Attention!

Do not rename encrypted files.
Do not try to decrypt your data using third party software, it may cause permanent data loss.
Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.
If no answer more 48 hrs email us here koreajoins69@tutanota.com

Remove .492 Virus and Restore Data

WARNING! Manual removal of .492 Virus requires being familiar with system files and registries. Removing important data accidentally can lead to permanent system damage. If you don’t feel comfortable with manual instructions, download a powerful anti-malware tool that will scan your system for malware and clean it safely for you.

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SpyHunter anti-malware tool will diagnose all current threats on the computer. By purchasing the full version, you will be able to remove all malware threats instantly. Additional information about SpyHunter / Help to uninstall SpyHunter

.492 Virus – Manual Removal Steps

Start the PC in Safe Mode with Network

This will isolate all files and objects created by the ransomware so they will be removed efficiently. The steps bellow are applicable to all Windows versions.

1. Hit the WIN Key + R

2. A Run window will appear. In it, write msconfig and then press Enter

3. A Configuration box shall appear. In it Choose the tab named Boot

4. Mark Safe Boot option and then go to Network under it to tick it too

5. Apply -> OK

Show Hidden Files

Some ransomware threats are designed to hide their malicious files in the Windows so all files stored on the system should be visible.

1. Open My Computer/This PC

2. Windows 7

    – Click on Organize button
    – Select Folder and search options
    – Select the View tab
    – Go under Hidden files and folders and mark Show hidden files and folders option

3. Windows 8/ 10

    – Open View tab
    – Mark Hidden items option

how to make hidden files visible in Windows 8 10 bestsecuritysearch instructions

4. Click Apply and then OK button

Enter Windows Task Manager and Stop Malicious Processes

1. Hit the following key combination: CTRL+SHIFT+ESC

2. Get over to Processes

3. When you find suspicious process right click on it and select Open File Location

4. Go back to Task Manager and end the malicious process. Right click on it again and choose End Process

5. Next, you should go folder where the malicious file is located and delete it

Repair Windows Registry

1. Again type simultaneously the WIN Key + R key combination

2. In the box, write regedit and hit Enter

3. Type the CTRL+ F and then write the malicious name in the search type field to locate the malicious executable

4. In case you have discovered registry keys and values related to the name, you should delete them, but be careful not to delete legitimate keys

Click for more information about Windows Registry and further repair help

Recover .492 Virus Files

WARNING! All files and objects associated with .492 Virus should be removed from the infected PC before any data recovery attempts. Otherwise the virus may encrypt restored files. Furthermore, a backup of all encrypted files stored on external media is highly recommendable.

DOWNLOAD .492 Virus Removal Tool

SpyHunter anti-malware tool will diagnose all current threats on the computer. By purchasing the full version, you will be able to remove all malware threats instantly. Additional information about SpyHunter / Help to uninstall SpyHunter

1. Use present backups

2. Use professional data recovery software

Stellar Phoenix Data Recovery – a specialist tool that can restore partitions, data, documents, photos, and 300 more file types lost during various types of incidents and corruption.

3. Using System Restore Point

    – Hit WIN Key
    – Select “Open System Restore” and follow the steps

restore-files-using-windows-system-restore-point

4. Restore your personal files using File History

    – Hit WIN Key
    – Type restore your files in the search box
    – Select Restore your files with File History
    – Choose a folder or type the name of the file in the search bar
    – Hit the “Restore” button

Preventive Security Measures

  • Enable and properly configure your Firewall.
  • Install and maintain reliable anti-malware software.
  • Secure your web browser.
  • Check regularly for available software updates and apply them.
  • Disable macros in Office documents.
  • Use strong passwords.
  • Don’t open attachments or click on links unless you’re certain they’re safe.
  • Backup regularly your data.
  • Author : Martin Beltov

    Martin graduated with a degree in Publishing from Sofia University. As a cyber security enthusiast he enjoys writing about the latest threats and mechanisms of intrusion.


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