Remove H-worm VBS worm from the System

by Milena Dimitrova | September 7, 2015 | 0 Comments RAT, trojan

H-worm Technical Description. RAT and Command & Control Server Who Is H-worm’s Creator Houdini?What to Do If Affected by H-Worm?

Name	H-worm
Type	Computer Worm, RAT
Short Description	H-worm is a VBS-based worm with RAT functionalities that can be employed in targeted attacks and spam campaigns.
Symptoms	The worm can be spread to steal sensitive data.
Distribution Method	Corrupted links, spam emails, a corrupted VBS file.
Detection tool	Download Malware Removal Tool, to See If Your System Has Been Affected By H-worm

A Computer worm is a malicious piece of software that should be removed instantly from the infected PC. H-worm falls under the category of VBS (Visual Basic Script) worms. It is also reported to have RAT (remote access Trojan) capabilities which make it even worse. The name ‘H-worm’ comes from the worm’s author – an individual hacker going by the nickname Houdini. According to security researchers at FireEye, the hacker is most likely based in Algeria.

The H-worm has been used primarily in targeted attacks on companies in the energy sector. However, it has been spotted in other types of attacks via email attachments and corrupted links.

H-worm Technical Description. RAT and Command & Control Server

The H-worm attacks starts off with a simple VBS file that may be hidden in a PE executable dropper. According to research, in specific attacks, multiple layers of obfuscation can be added to the worm. Upon analyzing such fragments, researchers at FireEye discovered that they were baffled with:

Custom Base64 encoding.
Several levels of standard Base64 encoding known as Safa Crypter.
Character substitutions.

The H-worm is reported to have another, Autoit version known as the ‘underworld’ variant. However, it has the functions of the VBS type.

In terms of the successful Command&Control contact, the worm will generate a network telemetry (beacon). As a result, multiple pieces of sensitive identification details will be sent out in the User-Agent field.

Additionally, H-worm is designed to employ multiple remote commands such as:

Execute
Update
Uninstall
Send
Site-send
Recv
Enum-driver
Enum-faf
Enum-process
Cmd-shell
Delete
Exit-process
Sleep

Researchers at FireEye have also uncovered the builder and the controller interface of H-worm. It control panel is written in the Delphi programming language. Delphi is an IDE (Integrated Development Environment) for console, desktop, web and mobile applications.

Some of the worm’s malicious features such as the password grabber and the USB spreading functionality were not enabled in the analyzed version. However, those can be active in newer variants of H-worm.

An examination of the infrastructure of the Command&Control server unveils that it is shared by some infamous RATs (Remote Access Trojans) such as:

→NjW0rm, NjRat/LV, XtremeRAT, PoisonIvy

The cyber criminals who have written those probably own a lot more RATs to initiate multiple malicious attacks. Security specialists believe that H-worm shares the same code base with njq8. It remains unclear exactly how related they are, but it is easy to assume that njq8 is a group of people specializing in the development of RATs.

Other Worms to Keep Away from:

Worm:VBS/Tibni.A

wormp2p.tanked.trojanv1.1

WORM/Lodbak.Gen2

Who Is H-worm’s Creator Houdini?

A vast security research on Houdini indicates that the hacker has a portal to showcase his work that also hosts a demo video of H-worm. The way the portal was written reveals that the hacker is proficient in French and Arabic, hence the conclusion he was from Algeria.

What to Do If Affected by H-Worm?

Many worms exploit network vulnerabilities to spread across the Web. A spamming technique may also be employed. To increase your system’s strength against malware, it is highly recommended to sustain a powerful anti-malware program. Additionally, inserting unknown and unchecked USB drives and external media is also considered quite unsafe.

There are several more security tips to follow in order to stay protected against worms and RATs:

Choose a secure ISP (Internet Service Provider).
Enable automatic Windows updates.
Enable the Windows Firewall.
Update your browser to bypass zero-day attacks.
Backup your data.
Avoid p2p file sharing.

If you feel like you need to know more about worms and RATs, you can refer to our article about the most popular Trojan attacks in 2015 .

NOTE! Substantial notification about the H-worm threat: Removal of H-worm requires expert knowledge. However, even if your computer skills are not at a professional level, don’t worry. You can rid the system of the malicious software, using a malware removal tool.

Milena Dimitrova

An inspired writer and content manager who has been with SensorsTechForum since the project started. A professional with 10+ years of experience in creating engaging content. Focused on user privacy and malware development, she strongly believes in a world where cybersecurity plays a central role. If common sense makes no sense, she will be there to take notes. Those notes may later turn into articles! Follow Milena @Milenyim

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Guide 1: How to Remove H-worm from Windows.
Guide 2: Get rid of H-worm on Mac OS X.
Guide 3: Remove H-worm in Google Chrome.

Guide 4: Erase H-worm from Mozilla Firefox.
Guide 5: Uninstall H-worm from Microsoft Edge.
Guide 6: Remove H-worm from Safari.
Guide 7: Eliminate H-worm from Internet Explorer.
Guide 8: Disable H-worm Push Notifications in Your Browsers.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

How to Remove H-worm from Windows.

Step 1: Boot Your PC In Safe Mode to isolate and remove H-worm

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!

We Recommend To Scan Your PC with SpyHunter

Keep in mind, that SpyHunter’s scanner is only for malware detection. If SpyHunter detects malware on your PC, you will need to purchase SpyHunter's malware removal tool to remove the malware threats. Read our SpyHunter 5 review. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria

1. Hold Windows key() + R

2. The "Run" Window will appear. In it, type "msconfig" and click OK.

3. Go to the "Boot" tab. There select "Safe Boot" and then click "Apply" and "OK".

Tip: Make sure to reverse those changes by unticking Safe Boot after that, because your system will always boot in Safe Boot from now on.

4. When prompted, click on "Restart" to go into Safe Mode.

5. You can recognise Safe Mode by the words written on the corners of your screen.

Step 2: Uninstall H-worm and related software from Windows

Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it. To do that:

1. Hold the Windows Logo Button and "R" on your keyboard. A Pop-up window will appear.

2. In the field type in "appwiz.cpl" and press ENTER.

3. This will open a window with all the programs installed on the PC. Select the program that you want to remove, and press "Uninstall"

Follow the instructions above and you will successfully uninstall most programs.

Step 3: Clean any registries, created by H-worm on your computer.

The usually targeted registries of Windows machines are the following:

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

You can access them by opening the Windows registry editor and deleting any values, created by H-worm there. This can happen by following the steps underneath:

1. Open the Run Window again, type "regedit" and click OK.

2. When you open it, you can freely navigate to the Run and RunOnce keys, whose locations are shown above.

3. You can remove the value of the virus by right-clicking on it and removing it.

Tip: To find a virus-created value, you can right-click on it and click "Modify" to see which file it is set to run. If this is the virus file location, remove the value.

IMPORTANT!
Before starting "Step 4", please boot back into Normal mode, in case you are currently in Safe Mode.
This will enable you to install and use SpyHunter 5 successfully.

Step 4: Scan for H-worm with SpyHunter Anti-Malware Tool

1. Click on the "Download" button to proceed to SpyHunter's download page.

Download

Malware Removal Tool

It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by SpyHunter. Click on the corresponding links to check SpyHunter's EULA, Privacy Policy and Threat Assessment Criteria.

2. After you have installed SpyHunter, wait for it to update automatically.

3. After the update process has finished, click on the 'Malware/PC Scan' tab. A new window will appear. Click on 'Start Scan'.

4. After SpyHunter has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the 'Next' button.

If any threats have been removed, it is highly recommended to restart your PC.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Get rid of H-worm from Mac OS X.

Step 1: Uninstall H-worm and remove related files and objects

OFFER

Manual Removal Usually Takes Time and You Risk Damaging Your Files If Not Careful!

We Recommend To Scan Your Mac with SpyHunter for Mac

Keep in mind, that SpyHunter for Mac needs to purchased to remove the malware threats. Click on the corresponding links to check SpyHunter’s EULA and Privacy Policy

1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:

2. Find Activity Monitor and double-click it:

3. In the Activity Monitor look for any suspicious processes, belonging or related to H-worm:

Tip: To quit a process completely, choose the “Force Quit” option.

4. Click on the "Go" button again, but this time select Applications. Another way is with the ⇧+⌘+A buttons.

5. In the Applications menu, look for any suspicious app or an app with a name, similar or identical to H-worm. If you find it, right-click on the app and select “Move to Trash”.

6: Select Accounts, after which click on the Login Items preference. Your Mac will then show you a list of items that start automatically when you log in. Look for any suspicious apps identical or similar to H-worm. Check the app you want to stop from running automatically and then select on the Minus (“-“) icon to hide it.

7: Remove any left-over files that might be related to this threat manually by following the sub-steps below:

Go to Finder.
In the search bar type the name of the app that you want to remove.
Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.

In case you cannot remove H-worm via Step 1 above:

In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:

Disclaimer! If you are about to tamper with Library files on Mac, be sure to know the name of the virus file, because if you delete the wrong file, it may cause irreversible damage to your MacOS. Continue on your own responsibility!

1: Click on "Go" and Then "Go to Folder" as shown underneath:

2: Type in "/Library/LauchAgents/" and click Ok:

3: Delete all of the virus files that have similar or the same name as H-worm. If you believe there is no such file, do not delete anything.

You can repeat the same procedure with the following other Library directories:

→ ~/Library/LaunchAgents
/Library/LaunchDaemons

Tip: ~ is there on purpose, because it leads to more LaunchAgents.

Step 2: Scan for and remove H-worm files from your Mac

When you are facing problems on your Mac as a result of unwanted scripts and programs such as H-worm, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.

Click the button below below to download SpyHunter for Mac and scan for H-worm:

Download

SpyHunter for Mac

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Remove H-worm from Google Chrome.

Step 1: Start Google Chrome and open the drop menu

Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"

Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.

Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Erase H-worm from Mozilla Firefox.

Step 1: Start Mozilla Firefox. Open the menu window

Step 2: Select the "Add-ons" icon from the menu.

Step 3: Select the unwanted extension and click "Remove"

Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Uninstall H-worm from Microsoft Edge.

Step 1: Start Edge browser.

Step 2: Open the drop menu by clicking on the icon at the top right corner.

Step 3: From the drop menu select "Extensions".

Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.

Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Remove H-worm from Safari.

Step 1: Start the Safari app.

Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.

Step 3: From the menu, click on "Preferences".

Step 4: After that, select the 'Extensions' Tab.

Step 5: Click once on the extension you want to remove.

Step 6: Click 'Uninstall'.

A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the H-worm will be removed.

How to Reset Safari
IMPORTANT: Before resetting Safari make sure you back up all your saved passwords within the browser in case you forget them.

Start Safari and then click on the gear leaver icon.

Click the Reset Safari button and you will reset the browser.

Windows Mac OS X Google Chrome Mozilla Firefox Microsoft Edge Safari Internet Explorer Stop Push Pop-ups

Eliminate H-worm from Internet Explorer.

Step 1: Start Internet Explorer.

Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'

Step 3: In the 'Manage Add-ons' window.

Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.

Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.