Suspicious File Download From File Sharing Websites - File Stream

 1title: Suspicious File Download From File Sharing Websites -  File Stream
 2id: 52182dfb-afb7-41db-b4bc-5336cb29b464
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26status: test
27description: Detects the download of suspicious file type from a well-known file and paste sharing domain
28references:
29    - https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventid=90015
30    - https://www.cisa.gov/uscert/ncas/alerts/aa22-321a
31    - https://fabian-voith.de/2020/06/25/sysmon-v11-1-reads-alternate-data-streams/
32    - 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/
33author: Florian Roth (Nextron Systems)
34date: 2022-08-24
35modified: 2026-03-29
36tags:
37    - attack.stealth
38    - attack.s0139
39    - attack.t1564.004
40logsource:
41    product: windows
42    category: create_stream_hash
43detection:
44    selection_domain:
45        Contents|contains:
46            - '.githubusercontent.com'       # Includes both gists and github repositories / Michael Haag (idea)
47            - '0x0.st'
48            - 'anonfiles.com'
49            - 'bashupload.com'
50            - 'cdn.discordapp.com'
51            - 'chunk.io'
52            - 'ddns.net'
53            - 'dl.dropboxusercontent.com'
54            - 'ghostbin.co'
55            - 'github.com'
56            - 'glitch.me'
57            - 'gofile.io'
58            - 'hastebin.com'
59            - 'mediafire.com'
60            - 'mega.nz'
61            - 'onrender.com'
62            - 'pages.dev'
63            - 'paste.ee'
64            - 'pastebin.com'
65            - 'pastebin.pl'
66            - 'pastetext.net'
67            - 'pixeldrain.com'
68            - 'privatlab.com'
69            - 'privatlab.net'
70            - 'send.exploit.in'
71            - 'sendspace.com'
72            - 'storage.googleapis.com'
73            - 'storjshare.io'
74            - 'supabase.co'
75            - 'temp.sh'
76            - 'transfer.sh'
77            - 'trycloudflare.com'
78            - 'ufile.io'
79            - 'w3spaces.com'
80            - 'workers.dev'
81            - 'x0.at'
82    selection_extension:
83        TargetFilename|contains:
84            - '.cpl:Zone'
85            - '.dll:Zone'
86            - '.exe:Zone'
87            - '.hta:Zone'
88            - '.lnk:Zone'
89            - '.one:Zone'
90            - '.vbe:Zone'
91            - '.vbs:Zone'
92            - '.xll:Zone'
93    condition: all of selection_*
94falsepositives:
95    - Some false positives might occur with binaries download via Github
96level: high