How to remove Offx stealer from the operating system

Also Known As: Offx information stealer
Type: Trojan
Damage level: Severe

What kind of malware is Offx?

Offx is an information-stealing malware that is coded using the Python programming language. It is commonly distributed through deceptive websites that pretend to be legitimate download sites for video editing software. This malware is designed to capture sensitive data, including passwords, cookies, and information from messaging and cryptocurrency wallet applications.

Offx malware

More about Offx

Offx steals passwords and cookies from multiple web browsers, including A7star, Brave, Cent-browser, Epic-privacy-browser, Google-chrome, GoogleSxS, Iridium\OperaGx, Kometa, Microsoft, Opera, Orbitum, Sputnik, Torch, Uran, Vivaldi, and Yandex. Also, it grabs .cpp, .db, .jpeg, .jpg, .lua, .pdf, .png, .py, and .txt files from the Desktop.

Offx Stealer is also designed to target messaging applications like Discord and Telegram. It also focuses on remote desktop applications such as UltraViewer and AnyDesk, along with various cryptocurrency wallet apps, including Atomic, Bytecoin, Coinomi, Ethereum, Exodus, Guarda, and Zcash.

Once all the data is collected, the stealer proceeds to generate a compressed ZIP file. Subsequently, the stealer uses this ZIP file to transmit the data through a Telegram channel. This is accomplished by initiating a POST request and attaching the final ZIP file to it.

Victims of Offx stealer can experience a range of issues once their devices are infected. Some potential consequences include compromised online accounts, loss of confidential data, monetary loss, and privacy breaches.

Threat Summary:
Name Offx information stealer
Threat Type Data stealer, screen grabber
Detection Names Avast (Win64:Trojan-gen), ESET-NOD32 (Python/Spy.Agent.NW), Kaspersky (Trojan-PSW.Win32.Greedy.bxl), Microsoft (Trojan:Win32/Sabsik.TE.B!ml), Sophos (Mal/Generic-S), Full List (VirusTotal)
Symptoms Information stealers are designed to stealthily infiltrate the victim's computer and remain silent, and thus no particular symptoms are clearly visible on an infected machine.
Distribution methods Malicious installers, infected email attachments, malicious online advertisements, social engineering, software 'cracks'.
Damage Stolen passwords and other sensitive information, identity theft, monetary loss, and other issues.
Malware Removal (Windows)

To eliminate possible malware infections, scan your computer with legitimate antivirus software. Our security researchers recommend using Combo Cleaner.
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Overall, having their devices infected with Offx stealer exposes victims to various issues, including compromised online accounts, loss of confidential data, unauthorized system access, financial loss, and invasion of privacy. Victims must take immediate action to remove the malware, secure their accounts, and mitigate the potential damage caused by the attack.

More examples of stealers are Warp, ObserverStealer, and NodeStealer.

How did Offx infiltrate my computer?

It is known that deceptive websites posing as legitimate sources for video editing software are a common distribution method for Offx. Users infect computers through malicious installers disguised as installers for CapCut and possibly other software.

Also, users can infect their computers with malware by clicking on suspicious email attachments or links, visiting compromised or malicious websites, interacting with infected removable storage devices, and through fake software updates.

How to avoid installation of malware?

Download programs from reputable sources, such as official websites or trusted app stores. Be discreet when opening email attachments or clicking links, especially from unknown senders. Regularly update your operating system and software to patch security vulnerabilities, and use reliable antivirus software to scan and protect your computer from malware threats.

Exercise caution when browsing the web and avoid clicking on questionable or misleading advertisements and pop-ups. If you believe that your computer is already infected, we recommend running a scan with Combo Cleaner Antivirus for Windows to automatically eliminate infiltrated malware.

Malicious (fake) page distributing Offx (source: cyble.com):

Offx stealer website distributing malware

Instant automatic malware removal: Manual threat removal might be a lengthy and complicated process that requires advanced IT skills. Combo Cleaner is a professional automatic malware removal tool that is recommended to get rid of malware. Download it by clicking the button below:
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How to remove malware manually?

Manual malware removal is a complicated task - usually it is best to allow antivirus or anti-malware programs to do this automatically. To remove this malware we recommend using Combo Cleaner Antivirus for Windows.

If you wish to remove malware manually, the first step is to identify the name of the malware that you are trying to remove. Here is an example of a suspicious program running on a user's computer:

Malware process running in the Task Manager

If you checked the list of programs running on your computer, for example, using task manager, and identified a program that looks suspicious, you should continue with these steps:

manual malware removal step 1Download a program called Autoruns. This program shows auto-start applications, Registry, and file system locations:

Autoruns application appearance

manual malware removal step 2Restart your computer into Safe Mode:

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer start process, press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, and then select Safe Mode with Networking from the list.

Run Windows 7 or Windows XP in Safe Mode with Networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Windows 8 users: Start Windows 8 is Safe Mode with Networking - Go to Windows 8 Start Screen, type Advanced, in the search results select Settings. Click Advanced startup options, in the opened "General PC Settings" window, select Advanced startup.

Click the "Restart now" button. Your computer will now restart into the "Advanced Startup options menu". Click the "Troubleshoot" button, and then click the "Advanced options" button. In the advanced option screen, click "Startup settings".

Click the "Restart" button. Your PC will restart into the Startup Settings screen. Press F5 to boot in Safe Mode with Networking.

Run Windows 8 in Safe Mode with Networking

Video showing how to start Windows 8 in "Safe Mode with Networking":

Windows 10 users: Click the Windows logo and select the Power icon. In the opened menu click "Restart" while holding "Shift" button on your keyboard. In the "choose an option" window click on the "Troubleshoot", next select "Advanced options".

In the advanced options menu select "Startup Settings" and click on the "Restart" button. In the following window you should click the "F5" button on your keyboard. This will restart your operating system in safe mode with networking.

Run Windows 10 in Safe Mode with Networking

Video showing how to start Windows 10 in "Safe Mode with Networking":

manual malware removal step 3Extract the downloaded archive and run the Autoruns.exe file.

Extract Autoruns.zip archive and run Autoruns.exe application

manual malware removal step 4In the Autoruns application, click "Options" at the top and uncheck "Hide Empty Locations" and "Hide Windows Entries" options. After this procedure, click the "Refresh" icon.

Refresh Autoruns application results

manual malware removal step 5Check the list provided by the Autoruns application and locate the malware file that you want to eliminate.

You should write down its full path and name. Note that some malware hides process names under legitimate Windows process names. At this stage, it is very important to avoid removing system files. After you locate the suspicious program you wish to remove, right click your mouse over its name and choose "Delete".

Delete malware in Autoruns

After removing the malware through the Autoruns application (this ensures that the malware will not run automatically on the next system startup), you should search for the malware name on your computer. Be sure to enable hidden files and folders before proceeding. If you find the filename of the malware, be sure to remove it.

Search for malware and delete it

Reboot your computer in normal mode. Following these steps should remove any malware from your computer. Note that manual threat removal requires advanced computer skills. If you do not have these skills, leave malware removal to antivirus and anti-malware programs.

These steps might not work with advanced malware infections. As always it is best to prevent infection than try to remove malware later. To keep your computer safe, install the latest operating system updates and use antivirus software. To be sure your computer is free of malware infections, we recommend scanning it with Combo Cleaner Antivirus for Windows.

Frequently Asked Questions (FAQ)

My computer is infected with Offx malware, should I format my storage device to get rid of it?

If your computer is infected with the Offx malware, it is recommended to scan your computer with reliable antivirus software to ensure that the malware is completely removed from your system.

What are the biggest issues that malware can cause?

The impact of malware can vary depending on its type, potentially resulting in identity theft, financial loss, diminished computer performance, an increased risk of further infections, and other issues.

What is the purpose of Offx malware?

The purpose of Offx malware is to gather sensitive information from infected devices. It targets various applications and browsers to steal passwords, cookies, and other valuable data.

How did Offx malware infiltrate my computer?

Offx malware commonly infiltrates computers through deceptive websites masquerading as legitimate sites. When users unknowingly visit these malicious websites and attempt to download software (e.g., CapCut video editing software), they download and install the Offx malware instead.

Will Combo Cleaner protect me from malware?

Combo Cleaner can detect and remove the majority of known malware infections. However, it is important to know that sophisticated malware often hides deep within the system. Therefore, performing a thorough system scan is required to detect and remove any hidden malware.

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for pcrisk.com since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

PCrisk security portal is brought by a company RCS LT. Joined forces of security researchers help educate computer users about the latest online security threats. More information about the company RCS LT.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

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