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Airin's Notes

Category: Windows 🠪 Sercurity
Data Streams - Super Hidden Files
May 24, 2022
Data Streams in NTFS allow files to have hidden content that is harder to see.

You can see how much space is used in Windows Explorer, going to properties for a file/folder. The Size field is the main file/folder. The Size On Disk includes the main file as well as any alternate data streams.

Create a data stream from command prompt: notepad notes.txt:test

To view them in command prompt, use: dir /r

Copy a file into a data stream:
type picture.jpg > notes.txt:pic1

Notes:
Deleting the main file will delete alternate data stream.
Copying to a different file system (such as FAT32) will warn you that some properties can't be copied (the alternate data streams).

Nirsoft utility "AlternateStreamView" lets you scan for them.
https://www.nirsoft.net/utils/alternate_data_streams.html

More info:
https://www.youtube.com/watch?v=3BWTo87oCwc

Category: Windows 🠪 Sercurity
Malware scanning
May 26, 2022

Online Virus Scan - Upload a file and have it scanned by many AV tools
https://www.virustotal.com/gui/

Download Offline 'Microsoft Safety Scanner'
https://docs.microsoft.com/en-us/windows/security/threat-protection/intelligence/safety-scanner-download

Malwarebytes Map of infections they detected when a different AV didn't find it:
https://www.malwarebytes.com/remediationmap





This site is meant to be used as a reference for myself, although others may find it useful. I use it to keep track of certain fixes, software, and other solutions which I may need while assisting customers. The page layout is pure HTML/CSS and is kept simple to optimize loading time and fast results.

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