Gridinsoft Security Lab

What is PUA:Win32/Vigua.A?


Stephanie AdlamJun 21, 20246 min read

PUA:Win32/Vigua.A is a universal detection name used by Microsoft Defender to detect potentially unwanted applications (PUAs). This is often associated…

Trojan:Win32/Cerber Malware Analysis


Stephanie AdlamJun 15, 20246 min read

Trojan:Win32/Cerber is a detection name that Microsoft Defender uses to flag ransomware. Its name was once associated with a specific malware family, but as it ceased its activity, this name has been used for a wide range of ransomware samples. It is common to see this malware type in attacks on corporations, though all of them are able to harm individuals to the same degree. Trojan:Win32/Cerber Overview Trojan:Win32/Cerber is an older type of malware classified as ransomware. It first appeared…

What is RegAsm.exe? Is RegAsm Virus?


Stephanie AdlamJun 13, 20245 min read

The RegAsm.exe process is an important component of the Windows operating system associated with the .NET Framework. This utility is designed to register .NET assemblies in the Windows registry, allowing COM clients to call managed applications. Let’s analyze its functionality and see whether malware can abuse it. What is RegAsm.exe? RegAsm.exe (Assembly Registration Tool) is a command line utility that provides users and developers with the ability to register CLR (Common Language Runtime) assemblies in the Windows Registry. The main…

Textinputhost.exe - Is it Safe? Troubleshooting Guide


Stephanie AdlamJun 13, 20247 min read

TextInputHost.exe is a legitimate process by Microsoft required for text input functionality in Windows. It gathers input from sources like your keyboard, touchscreen, or pen, interprets it, and delivers it to your specific application. Though for some users seeing that process may be confusing; it is also a source of several issues that I will help you to address. TextInputHost.exe – What is It? TextInputHost.exe is a legitimate process in the Windows Feature Experience Pack. It is responsible for inputting…

What is Werfault.exe?

Werfault.exe Error

Stephanie AdlamJun 13, 20245 min read

Werfault.exe is a system process used to collect information about program errors, which helps diagnose and resolve issues to improve the user experience. In certain cases, it can repeatedly crash, displaying an error message, and also be used by malware. What is Werfault.exe? Werfault.exe is a Windows Error Reporting (WER) process. It is responsible for handling error reporting in Windows operating systems. WerFault.exe was first released on 11/08/2006 for Windows Vista and is still present in Windows 10 and 11.…

What is AggregatorHost.exe? Is it Safe?


Stephanie AdlamJun 13, 20244 min read

Aggregatorhost.exe is a process in the Task Manager that is also often suspicious to users. Due to its uncertain nature, it can appear to the users as a malicious process, but it is not (at least, not usually). Below, I will tell you what this process is, what it refers to, and whether you may have a reason to distrust it. What is AggregatorHost.exe? The Aggregatorhost.exe is a system process that you can occasionally spectate in the Task Manager. I…

Hellminer.exe Malware Analysis & Removal

Hellminer.exe Coin Miner

Stephanie AdlamJun 13, 20241 min read

Hellminer.exe is a process you can see in the Task Manager that indicates a malicious software activity. It stands out by the high CPU load it creates, making the system much less responsive. Let’s figure out what this process is, and how to get rid of it. Continue reading Hellminer.exe Coin Miner

rsEngineSvc.exe High CPU & Memory Usage

rsEngineSvc.exe Process: Reason Core Security Engine Service

Stephanie AdlamJun 13, 20244 min read

RsEngineSvc.exe is an executable file associated with RAV Antivirus, a program developed by ReasonLabs. While being less dangerous than malware, it may be categorized as PUP (Potentially Unwanted Program). This kind of software is usually bundled with other free applications and installed without the user’s knowledge or distributed through deceptive advertising. Is Rsenginesvc.exe Virus? As I wrote above, rsEngineSvc.exe process is a part of RAV Antivirus (Reason Core Security Engine Service). It is a program from ReasonLabs and supposedly serves…

What is HxTsr.exe? Is HxTsr Virus?

HxTsr.exe – What is the HxTsr Process?

Stephanie AdlamJun 13, 20245 min read

The HxTsr.exe process is a part of the Microsoft Outlook Communications component of the Windows 10/11 operating system. This process is responsible for synchronizing mail, contacts, and calendars between Outlook and other applications. Typically, it runs in the background and does not attract users’ attention at all. However, in some cases, the HxTsr.exe process may be responsible for performance issues, security, or system stability. It is possible that this process is tampered or infected with a virus that uses its…

Sniffing and Spoofing

Sniffing and Spoofing: Difference, Meaning

Stephanie AdlamJun 13, 20247 min read

Users are increasingly encountering malicious links that, when clicked, unleash a different kind of computer destruction. In this case, it is crucial for users to be aware of the appearance of such malware, its associated links, and other potential hazards. This article aims to introduce the concepts of sniffing and spoofing, distinguish between them, explore protective measures against these threats, and delve into their underlying mechanisms. What is Sniffing? Sniffing involves monitoring data packets and recording network activities. System or…

Csrss.exe Explained & Troubleshooting Guide

Csrss.exe Trojan Virus

Stephanie AdlamJun 13, 20248 min read

Csrss.exe is an important Windows process, which may sometimes consume a lot of system resources and puzzle the users with such behavior. Some people may mistake it for trojan virus and try to terminate it forcefully. So, is csrss.exe dangerous? And how to fix the issues it creates? Let’s find out. What is Csrss.exe? Csrss.exe is a legitimate Windows process with the full name of Client Server Runtime Process and is critical to the system. This process is present in…

Usermode Font Driver Host Troubleshooting Guide

Usermode Font Driver Host (fontdrvhost.exe)

Stephanie AdlamJun 13, 20245 min read

The Usermode Font Driver Host process is an important part of the Windows operating system. It may raise questions among users due to its high consumption of resources such as CPU and memory. Let’s find out what this process is and whether you can do without it. What is Usermode Font Driver Host? The Usermode Font Driver Host process, as its name suggests, is responsible for handling fonts in user mode, which helps the system display text in various applications…

UsoClient.exe Analysis and Troubleshooting


Stephanie AdlamJun 13, 20245 min read

The UsoClient.exe process is one of the system components of the Windows operating system that is part of the Update Client. This process plays an important role in automatically managing the download and installation of system updates, but it can also raise questions for users for several reasons. First, UsoClient.exe can sometimes significantly load system resources. Second, the behavior of the process can be similar to the actions of malware. In this article, we will understand the functions of UsoClient.exe,…