Query: alert when Detects potentially suspicious child processes launched via the ScreenConnect client service.
Matching passage: Sigma rule: Detects potentially suspicious child processes launched via the ScreenConnect client service.. Logsource: windows / process_creation. Rule: title: Remote Access Tool - ScreenConnect Potential Suspicious Remote Command Execution id: 7b582f1a-b318-4c6a-bf4e-66fe49bf55a5 related: - id: d1a401ab-8c47-4e86-a7d8-2460b6a53e4a type: derived status: test description: 'Detects potentially suspicious child processes launched via the ScreenConnect client service. ' references: - https://www.mandiant.com/resources/telegram-malware-iranian-espionage - https://docs.connectwise.com/ConnectWise_Control_Documentation/Get_started/Host_client/View_menu/Backstage_mode - https://www.huntress.com/blog/slashandgrab-screen-connect-post-exploitation-in-the-wild-cve-2024-1709-cve-2024-1708 - https://www.trendmicro.com/en_us/research/24/b/threat-actor-groups-including-black-basta-are-exploiting-recent-.html author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems), @Kostastsale date: 2022-02-25 modified: 2024-02-28 tags: - attack.command-and-control - attack.t1219.002 logsource: product: windows category: process_creation detection: selection: ParentCommandLine|contains|all: - :\Windows\TEMP\ScreenConnect\ - run.cmd Image|endswith: - \bitsadmin.exe - \cmd.exe - \curl.exe - \dllhost.exe - \net.exe - \nltest.exe - \powershell.exe - \pwsh.exe - \rundll32.exe - \wevtutil.exe condition: selection falsepositives: - If the script being executed make use of any of the utilities mentioned in the detection then they should filtered out or allowed. level: medium
Near-miss passage: Sigma rule: Detects loading of "credui.dll" and related DLLs by an uncommon process. Attackers might leverage this DLL for potential. Logsource: windows / image_load. Rule: title: CredUI.DLL Loaded By Uncommon Process id: 9ae01559-cf7e-4f8e-8e14-4c290a1b4784 status: test description: Detects loading of "credui.dll" and related DLLs by an uncommon process. Attackers might leverage this DLL for potential use of "CredUIPromptForCredentials" or "CredUnPackAuthenticationBufferW". references: - https://securitydatasets.com/notebooks/atomic/windows/credential_access/SDWIN-201020013208.html - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1056.002/T1056.002.md#atomic-test-2---powershell---prompt-user-for-password - https://learn.microsoft.com/en-us/windows/win32/api/wincred/nf-wincred-creduipromptforcredentialsa - https://github.com/S12cybersecurity/RDPCredentialStealer author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research) date: 2020-10-20 modified: 2026-06-29 tags: - attack.credential-access - attack.collection - attack.t1056.002 logsource: category: image_load product: windows detection: selection: - ImageLoaded|endswith: - \credui.dll - \wincredui.dll - OriginalFileName: - credui.dll - wincredui.dll filter_main_generic: Image|startswith: - C:\Program Files (x86)\ - C:\Program Files\ - C:\Windows\System32\ - C:\Windows\SysWOW64\ - C:\Windows\SystemApps\ filter_main_full: Image: - C:\Windows\explorer.exe - C:\Windows\ImmersiveControlPanel\SystemSettings.exe - C:\Windows\regedit.exe filter_optional_opera: Image|endswith: \opera_autoupdate.exe filter_optional_process_explorer: Image|endswith: - \procexp64.exe - \procexp64a.exe - \procexp.exe filter_optional_teams: Image|startswith: C:\Users\ Image|contains: \AppData\Local\Microsoft\Teams\ Image|endswith: \Teams.exe filter_optional_onedrive: Image|startswith: C:\Users\ Image|contains: \AppData\Local\Microsoft\OneDrive\ condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Other legitimate processes loading those DLLs in your environment. level: medium