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

What is Adware.ExtenBro infection?

In this post you will certainly find about the interpretation of Adware.ExtenBro as well as its unfavorable influence on your computer. Such ransomware are a form of malware that is elaborated by on the internet scams to demand paying the ransom by a target.

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Most of the situations, Adware.ExtenBro ransomware will certainly advise its sufferers to launch funds transfer for the objective of neutralizing the modifications that the Trojan infection has introduced to the sufferer’s device.

Adware.ExtenBro Summary

These adjustments 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.
  • Injection (inter-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.
  • 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.
  • Uses Windows utilities for basic functionality;
  • 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!
  • Network activity detected but not expressed in API logs. Microsoft built an API solution right into its Windows operating system it reveals network activity for all apps and programs that ran on the computer in the past 30-days. This malware hides network activity.
  • Ciphering the papers situated on the sufferer’s hard disk drive — so the target can no more make use of the data;
  • Preventing normal access to the sufferer’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 Ransom.Wannacry Ransom.Wannacry


The most normal networks where Adware.ExtenBro Trojans are infused are:

  • By methods of phishing emails;
  • As an effect of customer winding up on a resource that holds a destructive software application;

As quickly as the Trojan is effectively infused, it will certainly either cipher the data on the sufferer’s computer or protect against the tool from operating in an appropriate fashion – while likewise putting a ransom money note that states the requirement for the targets to impact the payment for the function of decrypting the records or recovering the file system back to the preliminary condition. In a lot of circumstances, the ransom note will show up when the customer restarts the PC after the system has already been damaged.

Adware.ExtenBro distribution networks.

In numerous edges of the world, Adware.ExtenBro grows by jumps as well as bounds. Nonetheless, the ransom notes and methods of obtaining the ransom quantity might differ depending on specific neighborhood (local) settings. The ransom money notes and also methods of extorting the ransom money amount may differ depending on particular local (regional) setups.

Ransomware injection

For example:

    Faulty informs about unlicensed software.

    In particular locations, the Trojans often wrongfully report having actually discovered some unlicensed applications allowed on the sufferer’s gadget. The alert after that demands the user to pay the ransom.

    Faulty declarations concerning illegal content.

    In countries where software application piracy is less preferred, this method is not as reliable for the cyber fraudulences. Additionally, the Adware.ExtenBro popup alert may wrongly declare to be stemming from a police organization and also will report having situated youngster porn or various other illegal data on the tool.

    Adware.ExtenBro popup alert may incorrectly claim to be deriving from a regulation enforcement organization and also will report having situated youngster pornography or other prohibited information on the device. The alert will in a similar way have a demand for the customer to pay the ransom.

Technical details

File Info:

crc32: 8D19C78D
md5: fce191cf38723a72f2c04f29626be7f6
name: FCE191CF38723A72F2C04F29626BE7F6.mlw
sha1: 125d17ac9d2fbd231fc614cc7966f07d4d11eb8d
sha256: 4e9d20273d65b6af20fa651769aeab9fa3d9f65d1fcdbaba58ddb72d868288b0
sha512: c635e5eead06ac32de84dc372389a0645bdf516d1fdc29c6a01fb82a8e147e49f64938fb8f8e259481a0e6b1a0d5e77c572f1954192e54478b34164c24480144
ssdeep: 24576:bBWL9JeErh5+UDJI9lqmuBYKq7I6Khyk0ti:895+UK9lqnLSKhj08
type: PE32 executable (GUI) Intel 80386, for MS Windows

Version Info:

FileVersion: 22.11.56
CompanyName: O8FfMEYNu1llhbkOgv1W
Comments: This installation was built with Inno Setup.
ProductName: O8FfMEYNu1llhbkOgv1W
ProductVersion: 22.11.56
FileDescription: O8FfMEYNu1llhbkOgv1W
Translation: 0x0000 0x04b0

Adware.ExtenBro also known as:

GridinSoft Trojan.Ransom.Gen
Bkav W32.AIDetect.malware1
Elastic malicious (high confidence)
MicroWorld-eScan Trojan.GenericKDZ.73211
FireEye Trojan.GenericKDZ.73211
Cylance Unsafe
VIPRE Trojan.Win32.Generic!BT
K7AntiVirus Trojan ( 005301de1 )
BitDefender Trojan.GenericKDZ.73211
K7GW Trojan ( 005301de1 )
Cybereason malicious.f38723
Cyren W32/Zusy.FM.gen!Eldorado
Symantec Ransom.Wannacry
APEX Malicious
Avast Win32:MalwareX-gen [Trj]
Kaspersky not-a-virus:HEUR:AdWare.Win32.ExtInstaller.gen
NANO-Antivirus Trojan.Win32.ExtenBro.fcdsfj
Sophos Mal/Generic-S
Comodo Malware@#env5shxxnqqk
F-Secure Heuristic.HEUR/AGEN.1109568
DrWeb Trojan.BPlug.3318
McAfee-GW-Edition BehavesLike.Win32.FileTour.bc
Emsisoft Trojan.GenericKDZ.73211 (B)
Avira HEUR/AGEN.1109568
Microsoft Trojan:Win32/Ditertag.A
Arcabit Trojan.Generic.D11DFB
SUPERAntiSpyware Adware.ExtenBro/Variant
ZoneAlarm not-a-virus:HEUR:AdWare.Win32.ExtInstaller.gen
GData Trojan.GenericKDZ.73211
Cynet Malicious (score: 85)
BitDefenderTheta Gen:NN.ZedlaF.34590.Mu8@a0n2UThO
ALYac Trojan.GenericKDZ.73211
MAX malware (ai score=97)
Malwarebytes Adware.ExtenBro
Panda Trj/CI.A
ESET-NOD32 multiple detections
Rising Trojan.ExtenBro!8.51 (TFE:5:wKFaTA7MhfR)
Yandex Trojan.GenAsa!+YqEKEgb04c
Ikarus Trojan.Win32.Extenbro
Fortinet Adware/Generic
AVG Win32:MalwareX-gen [Trj]
Qihoo-360 Win32/Trojan.edc

How to remove Adware.ExtenBro 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 Adware.ExtenBro 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 Adware.ExtenBro you can always ask me in the comments for getting help.

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  1. GridinSoft Anti-Malware Review from HowToFix site:
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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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