Threat research notebook
Fresh malware notes, phishing samples, scam redirects, ransomware observations, and field reports from Gridinsoft research. No gallery, no filler: date, case, finding, next read.
302 lab recordsPUA:Win32/Presenoker is a Microsoft Defender detection for a potentially unwanted application, not a single fixed virus family. Treat it as unsafe unless you clearly recognize the app, downloaded it from the official source, and...
Defender found PUADlManager:Win32/OfferCore or PUADIManager? Check the path, decide false positive vs removal, clean bundles, and...
Defender found PUA:Win32/Vigua.A? Check the file source, false-positive signs, repeat alerts, and cleanup steps before restoring...
sihost.exe is safe in the Windows System32 folder with a Microsoft signature. Check virus signs, high...
Antivirus engine of MaxSecure, a well-known cybersecurity vendor, currently shows massive amounts of false positive detection with the name Win.MxResIcn.Heur.Gen. It touches numerous legitimate...
An IP stresser is safe only for systems you own or have written permission to test. Learn free-stresser red flags, DDoS booter risks, and...
The Malware world evolves constantly, and it would be reckless to ignore newcomers and their potential. Meduza Stealer appears to be a pretty potent...
SearchHost.exe spiking CPU, memory, GPU, or waking your laptop dGPU? Learn when it is normal Windows Search, when it may be malware, and how...
Script-based malware uses scripts such as PowerShell, JavaScript, VBScript, batch files, Office macros, or shell scripts to download, launch, hide, or control malicious activity....
Defender detected Program:Win32/Wacapew.C!ml? Learn how to check the file source, decide whether it is a false positive, remove suspicious files, and scan for leftovers.
PUABundler:Win32/CandyOpen points to an OpenCandy-style bundler that can add unwanted apps, ads, browser extensions, and search changes.
RegAsm.exe is a legitimate Microsoft .NET tool, but malware can imitate or abuse it. Check the path, signature, command line, startup entries, and blocked...
TextInputHost.exe is usually a safe Microsoft Windows input process. Learn how to verify its path and signature, fix high GPU usage or system errors,...
Hellminer.exe is a suspicious process commonly associated with cryptocurrency mining malware. If it appears in Task Manager and uses high CPU, GPU, or power...
RAV Endpoint Protection appeared randomly? Learn what rsEngineSvc.exe is, why recurring alerts happen, and how to uninstall ReasonLabs/RAV safely.
Learn the difference between sniffing and spoofing, how attackers use traffic capture and fake identity, and how to protect accounts, devices, and networks.
csrss.exe is normally safe in C:\Windows\System32. Verify the path and signature, recognize a Trojan copy, fix high CPU, and remove only the impostor.
Usermode Font Driver Host is fontdrvhost.exe. Learn when UMFD-0 or Temp.font driver host is normal, how to verify System32 and Microsoft signature, and how...
UsoClient.exe is a legitimate Windows Update component, not a virus when it runs from C:\Windows\System32\UsoClient.exe and is signed by Microsoft Windows. It belongs to...
AcroTray.exe is usually an Adobe Acrobat startup helper. Learn when it is safe, how to disable it at startup, check the Adobe path and...
