Windows 10: PC Infected with Persistent Malware Downloading Files Hourly

Darren Franco Antonio · Apr 9, 2024

Hello Microsoft Community,I'm in a bit of a bind and desperately need your expertise. Two days ago, around 6:30-7:00 PM GMT +8, I mistakenly executed a file I downloaded from the Internet. Only after running it did I realize its malicious intent, evident from a suspicious pre-build event in the code. I cannot post the code here because it might tag my post as malicious.Since then, my PC has been automatically downloading a .7z file to the "AppData/Local/Temp" folder every hour on the hour. This archive contains "aitstatic.exe", "ComSvcConfig.exe", and "MicrosoftCertificateServices.exe." Ad

:)

bruinator · Apr 9, 2024

steps taken for infected Pc's.

I was hoping someone could give me a list of step by step instructions you use as a guide to clean virus, malware...etc. so I can keep my PC clean if it gets infected.

thx

MoxieMomma · Apr 9, 2024

steps taken for infected Pc's.

Hi:

I was hoping someone could give me a list of step by step instructions you use as a guide to clean virus, malware...etc. so I can keep my PC clean if it gets infected.

thx
Click to expand...

There is no one set of "boilerplate", "cookbook" or standard steps.
Each computer is unique.
Each malware infection is unique.
Proper diagnosis, cleanup and repair depends on the particular infection and the system that is infected.
The process can be tedious and time-consuming, often requiring the use of multiple powerful tools, in the proper sequence.
Many of them can actually damage the system if deployed improperly by untrained computer users.

Bottom line:
Malware cleanup is best done with *customized* support provided by trained individuals who know what tools to use and how to use them.

There are a few folks with such expertise here at this forum (I am not one of them).
And there are a number of reputable computer disinfection fora where trained malware removal experts provide free, custom assistance.

Cheers,

Brink · Apr 9, 2024

New Nodersok malware has infected thousands of PCs

Thousands of Windows computers across the world have been infected with a new strain of malware that downloads and installs a copy of the Node.js framework to convert infected systems into proxies and perform click-fraud.

The malware, named Nodersok (in a Microsoft report) and Divergent (in a Cisco Talos report), was first spotted over the summer, distributed via malicious ads that forcibly downloaded HTA (HTML application) files on users' computers.

Users who found and ran these HTA files started a multi-stage infection process involving Excel, JavaScript, and PowerShell scripts that eventually downloaded and installed the Nodersok malware.

The malware itself has multiple components, each with its own role. There's a PowerShell module that tries to disable Windows Defender and Windows Update, and there's a component for elevating the malware's permissions to SYSTEM level.

But there are also two components that are legitimate apps -- namely WinDivert and Node.js. The first is an app for capturing and interacting with network packets, while the second is a well-known developer tool for running JavaScript on web servers.

According to Microsoft and Cisco reports, the malware uses the two legitimate apps to start a SOCKS proxy on infected hosts. But here is where the reports diverge. Microsoft claims the malware turns infected hosts into proxies to relay malicious traffic. Cisco, on the other hand, says these proxies are used to perform click-fraud.

Nevertheless, malware is malware, and it's not a good sign when someone gets infected, despite the output. Just like any other malware strain built on a client-server architecture, Nodersok's creators could, at any point, deploy other modules to perform additional tasks, or even deploy secondary malware payloads like ransomware or banking trojans.

Since Microsoft found the malware, Windows Defender should also be able to spot it.

To prevent infections, the best advice is that users not run any HTA files they find on their computers, especially if they don't know the files' precise origin. Files downloaded from a web page out of the blue are always a bad sign and shouldn't be trusted, regardless of extension.

According to Microsoft telemetry, Nodersok has managed to already infect "thousands of machines in the last several weeks." Most of the infections have taken place this month, and have hit US and EU-based users, the company said...
Click to expand...

Read more:

Microsoft: New Nodersok malware has infected thousands of PCs | ZDNet

https://www.microsoft.com/security/b...based-malware/

Windows 10: PC Infected with Persistent Malware Downloading Files Hourly

PC Infected with Persistent Malware Downloading Files Hourly

PC Infected with Persistent Malware Downloading Files Hourly

PC Infected with Persistent Malware Downloading Files Hourly

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