Suspicious File Download From File Sharing Domain Via Wget.EXE

Status: test
Severity: high
Log source: category process_creation, product windows
Author: Nasreddine Bencherchali (Nextron Systems)
Source: github.com/SigmaHQ/sigma

Detects potentially suspicious file downloads from file sharing domains using wget.exe

MITRE ATT&CK coverage

Tactic	Techniques
Execution	No specific technique

Telemetry coverage

Provider	Record / event type
Sysmon	Event ID 1: Process creation

Rule body

title: Suspicious File Download From File Sharing Domain Via Wget.EXE
id: a0d7e4d2-bede-4141-8896-bc6e237e977c
related:
    - id: 8b48ad89-10d8-4382-a546-50588c410f0d
      type: similar
    - id: d635249d-86b5-4dad-a8c7-d7272b788586
      type: similar
    - id: 52182dfb-afb7-41db-b4bc-5336cb29b464
      type: similar
    - id: ae02ed70-11aa-4a22-b397-c0d0e8f6ea99
      type: similar
    - id: e0f8ab85-0ac9-423b-a73a-81b3c7b1aa97
      type: similar
    - id: 7b434893-c57d-4f41-908d-6a17bf1ae98f
      type: similar
    - id: 8518ed3d-f7c9-4601-a26c-f361a4256a0c
      type: similar
    - id: 42a5f1e7-9603-4f6d-97ae-3f37d130d794
      type: similar
    - id: 56454143-524f-49fb-b1c6-3fb8b1ad41fb
      type: similar
    - id: b6e04788-29e1-4557-bb14-77f761848ab8
      type: similar
    - id: 297ae038-edc2-4b2e-bb3e-7c5fc94dd5c7
      type: similar
status: test
description: Detects potentially suspicious file downloads from file sharing domains using wget.exe
references:
    - https://labs.withsecure.com/publications/fin7-target-veeam-servers
    - https://github.com/WithSecureLabs/iocs/blob/344203de742bb7e68bd56618f66d34be95a9f9fc/FIN7VEEAM/iocs.csv
    - 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: Nasreddine Bencherchali (Nextron Systems)
date: 2023-05-05
modified: 2026-03-29
tags:
    - attack.execution
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\wget.exe'
        - OriginalFileName: 'wget.exe'
    selection_websites:
        CommandLine|contains:
            - '.githubusercontent.com'       # Includes both gists and github repositories / Michael Haag (idea)
            - '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_http:
        CommandLine|contains: 'http'
    selection_flag:
        - CommandLine|re: '\s-O\s'
        - CommandLine|contains: '--output-document'
    selection_ext:
        CommandLine|endswith:
            - '.ps1'
            - ".ps1'"
            - '.ps1"'
            - '.dat'
            - ".dat'"
            - '.dat"'
            - '.msi'
            - ".msi'"
            - '.msi"'
            - '.bat'
            - ".bat'"
            - '.bat"'
            - '.exe'
            - ".exe'"
            - '.exe"'
            - '.vbs'
            - ".vbs'"
            - '.vbs"'
            - '.vbe'
            - ".vbe'"
            - '.vbe"'
            - '.hta'
            - ".hta'"
            - '.hta"'
            - '.dll'
            - ".dll'"
            - '.dll"'
            - '.psm1'
            - ".psm1'"
            - '.psm1"'
    condition: all of selection_*
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: `condition`

all of selection_*

Stage 1: `selection_img`

selection_img:
    - Image|endswith: '\wget.exe'
    - OriginalFileName: 'wget.exe'

Stage 2: `selection_websites`

selection_websites:
    CommandLine|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'

Stage 3: `selection_http`

selection_http:
    CommandLine|contains: 'http'

Stage 4: `selection_flag`

selection_flag:
    - CommandLine|re: '\s-O\s'
    - CommandLine|contains: '--output-document'

Stage 5: `selection_ext`

selection_ext:
    CommandLine|endswith:
        - '.ps1'
        - ".ps1'"
        - '.ps1"'
        - '.dat'
        - ".dat'"
        - '.dat"'
        - '.msi'
        - ".msi'"
        - '.msi"'
        - '.bat'
        - ".bat'"
        - '.bat"'
        - '.exe'
        - ".exe'"
        - '.exe"'
        - '.vbs'
        - ".vbs'"
        - '.vbs"'
        - '.vbe'
        - ".vbe'"
        - '.vbe"'
        - '.hta'
        - ".hta'"
        - '.hta"'
        - '.dll'
        - ".dll'"
        - '.dll"'
        - '.psm1'
        - ".psm1'"
        - '.psm1"'

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`CommandLine`	ends_with	`.bat` corpus 4 (sigma 4) `.bat"` corpus 4 (sigma 4) `.bat'` corpus 4 (sigma 4) `.dat` corpus 7 (sigma 6, elastic 1) `.dat"` corpus 4 (sigma 4) `.dat'` corpus 4 (sigma 4) `.dll` corpus 7 (sigma 7) `.dll"` corpus 5 (sigma 5) `.dll'` corpus 5 (sigma 5) `.exe` corpus 6 (sigma 6) `.exe"` corpus 4 (sigma 4) `.exe'` corpus 4 (sigma 4) `.hta` corpus 6 (sigma 6) `.hta"` corpus 4 (sigma 4) `.hta'` corpus 4 (sigma 4) `.msi` corpus 5 (sigma 4, elastic 1) `.msi"` corpus 4 (sigma 4) `.msi'` corpus 4 (sigma 4) `.ps1` corpus 6 (sigma 6) `.ps1"` corpus 4 (sigma 4) `.ps1'` corpus 4 (sigma 4) `.psm1` corpus 5 (sigma 5) `.psm1"` corpus 4 (sigma 4) `.psm1'` corpus 4 (sigma 4) `.vbe` corpus 7 (sigma 7) `.vbe"` corpus 4 (sigma 4) `.vbe'` corpus 4 (sigma 4) `.vbs` corpus 7 (sigma 7) `.vbs"` corpus 4 (sigma 4) `.vbs'` corpus 4 (sigma 4)	`field:"CommandLine" kind:ends_with`
`CommandLine`	match	`--output-document` corpus 4 (sigma 4) `.githubusercontent.com` corpus 5 (sigma 4, chronicle 1) `0x0.st` corpus 6 (sigma 6) `anonfiles.com` corpus 6 (sigma 5, chronicle 1) `bashupload.com` corpus 6 (sigma 6) `cdn.discordapp.com` corpus 6 (sigma 5, chronicle 1) `chunk.io` corpus 6 (sigma 6) `ddns.net` corpus 6 (sigma 5, chronicle 1) `dl.dropboxusercontent.com` corpus 6 (sigma 5, chronicle 1) `ghostbin.co` corpus 6 (sigma 5, chronicle 1) `github.com` corpus 4 (sigma 4) `glitch.me` corpus 6 (sigma 5, chronicle 1) `gofile.io` corpus 7 (sigma 5, elastic 1, chronicle 1) `hastebin.com` corpus 6 (sigma 5, chronicle 1) `http` corpus 52 (sigma 34, elastic 15, chronicle 2, splunk 1) `mediafire.com` corpus 6 (sigma 5, chronicle 1) `mega.nz` corpus 6 (sigma 5, chronicle 1) `onrender.com` corpus 6 (sigma 5, chronicle 1) `pages.dev` corpus 6 (sigma 5, chronicle 1) `paste.ee` corpus 7 (sigma 5, elastic 1, chronicle 1) `pastebin.com` corpus 6 (sigma 5, chronicle 1) `pastebin.pl` corpus 6 (sigma 5, chronicle 1) `pastetext.net` corpus 6 (sigma 5, chronicle 1) `pixeldrain.com` corpus 4 (sigma 3, elastic 1) `privatlab.com` corpus 6 (sigma 5, chronicle 1) `privatlab.net` corpus 6 (sigma 5, chronicle 1) `send.exploit.in` corpus 6 (sigma 5, chronicle 1) `sendspace.com` corpus 6 (sigma 5, chronicle 1) `storage.googleapis.com` corpus 6 (sigma 5, chronicle 1) `storjshare.io` corpus 6 (sigma 5, chronicle 1) `supabase.co` corpus 6 (sigma 5, chronicle 1) `temp.sh` corpus 7 (sigma 6, chronicle 1) `transfer.sh` corpus 8 (sigma 6, elastic 1, chronicle 1) `trycloudflare.com` corpus 6 (sigma 5, chronicle 1) `ufile.io` corpus 8 (sigma 6, elastic 1, chronicle 1) `w3spaces.com` corpus 6 (sigma 5, chronicle 1) `workers.dev` corpus 6 (sigma 5, chronicle 1) `x0.at` corpus 6 (sigma 6)	`field:"CommandLine" kind:match`
`CommandLine`	regex_match	`\s-O\s` corpus 4 (sigma 4)	`field:"CommandLine" kind:regex_match value:"\s-O\s"`
`Image`	ends_with	`\wget.exe` corpus 9 (sigma 9)	`field:"Image" kind:ends_with value:"\wget.exe"`
`OriginalFileName`	eq	`wget.exe` corpus 3 (sigma 3)	`field:"OriginalFileName" kind:eq value:"wget.exe"`

Suspicious File Download From File Sharing Domain Via Wget.EXE

MITRE ATT&CK coverage

Telemetry coverage

Rule body

Stages and Predicates

Stage 0: condition

Stage 1: selection_img

Stage 2: selection_websites

Stage 3: selection_http

Stage 4: selection_flag

Stage 5: selection_ext

Indicators

Stage 0: `condition`

Stage 1: `selection_img`

Stage 2: `selection_websites`

Stage 3: `selection_http`

Stage 4: `selection_flag`

Stage 5: `selection_ext`