Query: detect Detects potentially suspicious child processes launched via the ScreenConnect client service. in logs
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 the usage of "reg.exe" to tamper with different Windows Defender registry keys in order to disable some importan. Logsource: windows / process_creation. Rule: title: Suspicious Windows Defender Registry Key Tampering Via Reg.EXE id: 452bce90-6fb0-43cc-97a5-affc283139b3 status: test description: 'Detects the usage of "reg.exe" to tamper with different Windows Defender registry keys in order to disable some important features related to protection and detection ' references: - https://thedfirreport.com/2022/03/21/apt35-automates-initial-access-using-proxyshell/ - https://github.com/swagkarna/Defeat-Defender-V1.2.0/tree/ae4059c4276da6f6303b8f53cdff085ecae88a91 - https://www.elevenforum.com/t/video-guide-how-to-completely-disable-microsoft-defender-antivirus.14608/page-2 - https://tria.ge/241231-j9yatstqbm/behavioral1 author: Florian Roth (Nextron Systems), Swachchhanda Shrawan Poudel, Nasreddine Bencherchali (Nextron Systems) date: 2022-03-22 modified: 2025-06-04 tags: - attack.defense-impairment - attack.t1685 logsource: category: process_creation product: windows detection: selection_root_img: - Image|endswith: \reg.exe - OriginalFileName: reg.exe selection_root_path: CommandLine|contains: - SOFTWARE\Microsoft\Windows Defender\ - SOFTWARE\Policies\Microsoft\Windows Defender Security Center - SOFTWARE\Policies\Microsoft\Windows Defender\ selection_dword_0: CommandLine|contains|all: - ' add ' - d 0 CommandLine|contains: - DisallowExploitProtectionOverride - EnableControlledFolderAccess - MpEnablePus - PUAProtection - SpynetReporting - SubmitSamplesConsent - TamperProtection selection_dword_1: CommandLine|contains|all: - ' add ' - d 1 CommandLine|contains: - DisableAccess - DisableAntiSpyware - DisableAntiSpywareRealtimeProtection - DisableAntiVirus - DisableAntiVirusSignatures - DisableArchiveScanning - DisableBehaviorMonitoring - DisableBlockAtFirstSeen - DisableCloudProtection - DisableConfig - DisableEnhancedNotifications - DisableIntrusionPreventionSystem - DisableIOAVProtection - DisableNetworkProtection - DisableOnAccessProtection - DisablePrivacyMode - DisableRealtimeMonitoring - DisableRoutinelyTakingAction - DisableScanOnRealtimeEnable - DisableScriptScanning - DisableSecurityCenter - Notification_Suppress - SignatureDisableUpdateOnStartupWithoutEngine condition: all of selection_root_* and 1 of selection_dword_* falsepositives: - Rare legitimate use by administrators to test software (should always be investigated) level: high