Query: alert when Detects usage of WinAPI functions in PowerShell scripts. It may indicate attempts to perform actions such as process inj
Matching passage: Sigma rule: Detects usage of WinAPI functions in PowerShell scripts. It may indicate attempts to perform actions such as process inj. Logsource: windows / ps_script. Rule: title: Potential WinAPI Calls Via PowerShell Scripts id: 03d83090-8cba-44a0-b02f-0b756a050306 related: - id: ba3f5c1b-6272-4119-9dbd-0bc8d21c2702 type: similar status: test description: 'Detects usage of WinAPI functions in PowerShell scripts. It may indicate attempts to perform actions such as process injection, token stealing, or other malicious activities that leverage Windows API calls. These techniques are commonly used to evade traditional file-based detections by loading and executing code directly in memory. ' references: - https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse - https://github.com/PowerShellMafia/PowerSploit/blob/1980f403ee78234eae4d93b50890d02f827a099f/CodeExecution/Invoke-Shellcode.ps1 - https://thedfirreport.com/2021/08/29/cobalt-strike-a-defenders-guide/ author: Nasreddine Bencherchali (Nextron Systems), Nikita Nazarov, oscd.community date: 2020-10-06 modified: 2026-04-29 tags: - attack.execution - attack.t1059.001 - attack.t1106 - attack.stealth - attack.t1620 logsource: product: windows category: ps_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection_injection: ScriptBlockText|contains|all: - VirtualAlloc - OpenProcess - WriteProcessMemory - CreateRemoteThread selection_token_steal: ScriptBlockText|contains|all: - OpenProcessToken - LookupPrivilegeValue - AdjustTokenPrivileges selection_duplicate_token: ScriptBlockText|contains|all: - OpenProcessToken - DuplicateTokenEx - CloseHandle selection_process_write_read: ScriptBlockText|contains|all: - WriteProcessMemory - VirtualAlloc - ReadProcessMemory - VirtualFree selection_local_shellcode_injection: ScriptBlockText|contains|all: - VirtualAlloc - GetDelegateForFunctionPointer - Marshal.Copy condition: 1 of selection_* falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects potentially suspicious file downloads from file sharing domains using PowerShell.exe. Logsource: windows / process_creation. Rule: title: Potentially Suspicious File Download From File Sharing Domain Via PowerShell.EXE id: b6e04788-29e1-4557-bb14-77f761848ab8 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: a0d7e4d2-bede-4141-8896-bc6e237e977c type: similar - id: 297ae038-edc2-4b2e-bb3e-7c5fc94dd5c7 type: similar status: test description: Detects potentially suspicious file downloads from file sharing domains using PowerShell.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/ - https://www.huntress.com/blog/slashandgrab-screen-connect-post-exploitation-in-the-wild-cve-2024-1709-cve-2024-1708 author: Nasreddine Bencherchali (Nextron Systems) date: 2024-02-23 modified: 2026-03-29 tags: - attack.execution logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \powershell.exe - \pwsh.exe - OriginalFileName: - PowerShell.EXE - pwsh.dll selection_websites: CommandLine|contains: - 0x0.st - anonfiles.com - bashupload.com - cdn.discordapp.com - chunk.io - ddns.net - dl.dropboxusercontent.com - ghostbin.co - 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_download: CommandLine|contains: - .DownloadString( - .DownloadFile( - 'Invoke-WebRequest ' - 'iwr ' - 'wget ' condition: all of selection_* falsepositives: - Unknown level: high