JS/ExtenBro.FBook.FW

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

What is JS/ExtenBro.FBook.FW infection?

In this short article you will find about the interpretation of JS/ExtenBro.FBook.FW and also its adverse effect on your computer. Such ransomware are a form of malware that is elaborated by on-line frauds to demand paying the ransom money by a victim.

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Most of the cases, JS/ExtenBro.FBook.FW infection will certainly advise its targets to launch funds transfer for the purpose of reducing the effects of the changes that the Trojan infection has introduced to the target’s gadget.

JS/ExtenBro.FBook.FW Summary

These adjustments can be as adheres to:

  • Attempts to connect to a dead IP:Port (1 unique times);
  • 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.

  • 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.
  • Performs some HTTP requests;
  • Uses Windows utilities for basic functionality;
  • Sniffs keystrokes;
  • Installs an hook procedure to monitor for mouse events;
  • Network activity contains more than one unique useragent.;
  • 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 modify proxy settings. This trick used for inject malware into connection between browser and server;
  • Creates a copy of itself;
  • Attempts to disable UAC.

    User Account Control or just UAC is a part of the Windows security system which prevents apps from making unwanted changes on PC.

    UAC includes several technologies 1:

    • File and egistry Virtualization;
    • Same-desktop Elevation;
    • Filtered Token;
    • User Interface Privilege Isolation;
    • Protected Mode Internet Explorer;
    • Installer Detection;
  • Ciphering the records found on the victim’s hard disk — so the target can no longer make use of the data;
  • Preventing normal 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.
Similar behavior
Related domains
z.whorecord.xyzGen:Variant.Ransom.1994
a.tomx.xyzGen:Variant.Ransom.1994
www.filmgetir.comGen:Variant.Ransom.1994
ww1.filmgetir.comGen:Variant.Ransom.1994
www.kingtr.clickGen:Variant.Ransom.1994
www.pornokan.comGen:Variant.Ransom.1994

JS/ExtenBro.FBook.FW

One of the most common channels through which JS/ExtenBro.FBook.FW are infused are:

  • By methods of phishing emails;
  • As a repercussion of customer winding up on a resource that organizes a harmful software application;

As quickly as the Trojan is effectively injected, it will certainly either cipher the data on the victim’s PC or protect against the gadget from operating in a proper manner – while additionally putting a ransom note that mentions the demand for the sufferers to effect the payment for the objective of decrypting the files or recovering the file system back to the preliminary problem. In the majority of instances, the ransom money note will certainly come up when the client reboots the PC after the system has actually already been damaged.

JS/ExtenBro.FBook.FW circulation channels.

In various corners of the globe, JS/ExtenBro.FBook.FW expands by jumps and also bounds. However, the ransom notes and tricks of obtaining the ransom money amount might differ depending on certain neighborhood (regional) setups. The ransom notes as well as techniques of obtaining the ransom quantity might differ depending on certain local (regional) setups.

Ransomware injection

For instance:

    Faulty signals concerning unlicensed software.

    In certain locations, the Trojans commonly wrongfully report having actually spotted some unlicensed applications made it possible for on the sufferer’s gadget. The alert then requires the user to pay the ransom money.

    Faulty statements about unlawful material.

    In nations where software program piracy is less prominent, this approach is not as effective for the cyber scams. Additionally, the JS/ExtenBro.FBook.FW popup alert may wrongly declare to be stemming from a law enforcement establishment and also will report having situated kid pornography or various other prohibited information on the tool.

    JS/ExtenBro.FBook.FW popup alert may wrongly claim to be acquiring from a regulation enforcement institution and also will report having situated child porn or other unlawful information on the tool. The alert will similarly contain a requirement for the user to pay the ransom.

Technical details

File Info:

crc32: 419F0C2C
md5: fd1930cde63a6c7d17ef376e1a05bd27
name: FD1930CDE63A6C7D17EF376E1A05BD27.mlw
sha1: 50ba79bff25091203c4fa111f821580ca1913d11
sha256: a30e0291a679d5b7ad58b72aa1d0057b3554ee4f595a48809be4b7f53422ed40
sha512: 7894f20d74fa4325c9fbf1171b8f78fa889499944b271c7996a9645a043a446077cba98355206bd3abfbee91a75ff9e1e1f74d6c1040cf97460da828e05838d1
ssdeep: 12288:CNIQAPGsAqY9IMVYd38sJdpQH8NlY8Kf0REZ51LUEOPRnfG:vPGSY91VwNJcczq0ROVOPRnfG
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

LegalCopyright: Apple Inc.
FileDescription: Apple Inc. 9.1.2 Installation
FileVersion: 9.1.2
Comments:
CompanyName: Apple Inc.
Translation: 0x0409 0x04e4

JS/ExtenBro.FBook.FW also known as:

GridinSoftTrojan.Ransom.Gen
K7AntiVirusTrojan ( 004c2c031 )
Elasticmalicious (high confidence)
DrWebTrojan.DownLoader26.42340
CynetMalicious (score: 99)
ALYacGen:Variant.Ransom.1994
CylanceUnsafe
SangforRansom.Win32.Blocker.kwsu
K7GWTrojan ( 004c2c031 )
Cybereasonmalicious.de63a6
SymantecML.Attribute.HighConfidence
ESET-NOD32a variant of JS/ExtenBro.FBook.FW
APEXMalicious
AvastWin32:Downloader-VYF [Trj]
KasperskyTrojan-Ransom.Win32.Blocker.kwsu
BitDefenderGen:Variant.Ransom.1994
NANO-AntivirusTrojan.Win32.Blocker.ezbseq
SUPERAntiSpywareTrojan.Agent/Gen-Downloader
MicroWorld-eScanGen:Variant.Ransom.1994
TencentWin32.Trojan.Generic.Ednl
Ad-AwareGen:Variant.Ransom.1994
SophosMal/Generic-S
ComodoMalware@#326xyjz3hwaea
BitDefenderThetaGen:NN.ZexaF.34692.Pq3@ayBN4sai
VIPRETrojan.Win32.Generic!BT
TrendMicroTROJ_BPUSH.SM
McAfee-GW-EditionArtemis!Trojan
FireEyeGeneric.mg.fd1930cde63a6c7d
EmsisoftGen:Variant.Ransom.1994 (B)
SentinelOneStatic AI – Suspicious PE
JiangminTrojan/Generic.bdkyh
WebrootW32.Rogue.Gen
AviraTR/Agent.674791
KingsoftWin32.Troj.Undef.(kcloud)
MicrosoftTrojan:Win32/Kilim.U
ArcabitTrojan.Ransom.D7CA
AegisLabTrojan.Win32.Generic.4!c
GDataGen:Variant.Ransom.1994
AhnLab-V3Trojan/Win32.Blocker.C742060
McAfeeArtemis!FD1930CDE63A
MAXmalware (ai score=84)
VBA32BScope.TrojanRansom.Blocker
MalwarebytesTrojan.KBayi.FLA
PandaTrj/Genetic.gen
TrendMicro-HouseCallTROJ_BPUSH.SM
RisingDownloader.Agent!8.B23 (RDMK:cmRtazq0/NIWCNTIt9QozJyMQkOP)
IkarusTrojan.Win32.AHK
MaxSecureTrojan.Malware.300983.susgen
FortinetW32/Generic!tr
AVGWin32:Downloader-VYF [Trj]
Paloaltogeneric.ml

How to remove JS/ExtenBro.FBook.FW 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 GridinSoft2

There is no better way to recognize, remove and prevent PC threats than to use an anti-malware software from GridinSoft3.

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 JS/ExtenBro.FBook.FW 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 JS/ExtenBro.FBook.FW you can always ask me in the comments for getting help.

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References

  1. Microsoft Ignite: How to disable User Account Control (UAC) on Windows Server
  2. GridinSoft Anti-Malware Review from HowToFix site: https://howtofix.guide/gridinsoft-anti-malware/
  3. 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.

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