Unusual File Download From File Sharing Websites - File Stream

Title: Unusual File Download From File Sharing Websites - File Stream
Status: test
Description:Detects the download of suspicious file type from a well-known file and paste sharing domain
References:
  -https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventid=90015
  -https://www.cisa.gov/uscert/ncas/alerts/aa22-321a
  -https://www.microsoft.com/en-us/security/blog/2024/01/17/new-ttps-observed-in-mint-sandstorm-campaign-targeting-high-profile-individuals-at-universities-and-research-orgs/
Author: Florian Roth (Nextron Systems)
Date: 2022-08-24
modified:2026-03-29
Tags:

• -'attack.stealth'
• -'attack.s0139'
• -'attack.t1564.004'

Logsource:

• product: windows
• category: create_stream_hash

Detection:
  selection_domain:
    Contents|contains:
      -'.githubusercontent.com'
      -'0x0.st'
      -'anonfiles.com'
      -'bashupload.com'
      -'cdn.discordapp.com'
      -'chunk.io'
      -'ddns.net'
      -'dl.dropboxusercontent.com'
      -'ghostbin.co'
      -'github.com'
      -'glitch.me'
      -'gofile.io'
      -'hastebin.com'
      -'mediafire.com'
      -'mega.nz'
      -'onrender.com'
      -'pages.dev'
      -'paste.ee'
      -'pastebin.com'
      -'pastebin.pl'
      -'pastetext.net'
      -'pixeldrain.com'
      -'privatlab.com'
      -'privatlab.net'
      -'send.exploit.in'
      -'sendspace.com'
      -'storage.googleapis.com'
      -'storjshare.io'
      -'supabase.co'
      -'temp.sh'
      -'transfer.sh'
      -'trycloudflare.com'
      -'ufile.io'
      -'w3spaces.com'
      -'workers.dev'
      -'x0.at'

  selection_extension:
    TargetFilename|contains:
      -'.bat:Zone'
      -'.cmd:Zone'
      -'.ps1:Zone'

  condition:all of selection_*
Falsepositives:
  -Unknown
Level: medium