Query: alert when Detects attempts to modify the registry using VBScript's CreateObject("Wscript.shell") and RegWrite methods embedded wit
Matching passage: Sigma rule: Detects attempts to modify the registry using VBScript's CreateObject("Wscript.shell") and RegWrite methods embedded wit. Logsource: windows / ps_script. Rule: title: Registry Modification Attempt Via VBScript - PowerShell id: 2a0a169d-cc66-43ce-9ae2-6e678e54e46a related: - id: 921aa10f-2e74-4cca-9498-98f9ca4d6fdf type: similar - id: 7f4c43f9-b1a5-4c7d-b24a-b41bf3a3ebf2 type: similar status: experimental description: 'Detects attempts to modify the registry using VBScript''s CreateObject("Wscript.shell") and RegWrite methods embedded within PowerShell scripts or commands. Threat actors commonly embed VBScript code within PowerShell to perform registry modifications, attempting to evade detection that monitors for direct registry access through traditional tools. This technique can be used for persistence, defense evasion, and privilege escalation by modifying registry keys without using regedit.exe, reg.exe, or PowerShell''s native registry cmdlets. ' references: - https://www.linkedin.com/posts/mauricefielenbach_livingofftheland-redteam-persistence-activity-7344801774182051843-TE00/ - https://www.nextron-systems.com/2025/07/29/detecting-the-most-popular-mitre-persistence-method-registry-run-keys-startup-folder/ - https://detect.fyi/hunting-fileless-malware-in-the-windows-registry-1339ccde00ad date: 2025-08-13 author: Swachchhanda Shrawan Poudel (Nextron Systems) tags: - attack.persistence - attack.execution - attack.defense-impairment - attack.t1112 - attack.t1059.005 logsource: category: ps_script product: windows detection: selection: ScriptBlockText|contains|all: - CreateObject - Wscript.shell - .RegWrite condition: selection falsepositives: - Some legitimate admin or install scripts may use these processes for registry modifications. level: medium
Near-miss passage: Sigma rule: Shadow Copies deletion using operating systems utilities. Logsource: windows / process_creation. Rule: title: Shadow Copies Deletion Using Operating Systems Utilities id: c947b146-0abc-4c87-9c64-b17e9d7274a2 status: stable description: Shadow Copies deletion using operating systems utilities references: - https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment - https://blog.talosintelligence.com/2017/05/wannacry.html - https://securingtomorrow.mcafee.com/other-blogs/mcafee-labs/new-teslacrypt-ransomware-arrives-via-spam/ - https://www.bleepingcomputer.com/news/security/why-everyone-should-disable-vssadmin-exe-now/ - https://www.hybrid-analysis.com/sample/ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa?environmentId=100 - https://github.com/Neo23x0/Raccine#the-process - https://github.com/Neo23x0/Raccine/blob/20a569fa21625086433dcce8bb2765d0ea08dcb6/yara/gen_ransomware_command_lines.yar - https://redcanary.com/blog/intelligence-insights-october-2021/ - https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/blackbyte-exbyte-ransomware author: Florian Roth (Nextron Systems), Michael Haag, Teymur Kheirkhabarov, Daniil Yugoslavskiy, oscd.community, Andreas Hunkeler (@Karneades) date: 2019-10-22 modified: 2022-11-03 tags: - attack.impact - attack.stealth - attack.t1070 - attack.t1490 logsource: category: process_creation product: windows detection: selection1_img: - Image|endswith: - \powershell.exe - \pwsh.exe - \wmic.exe - \vssadmin.exe - \diskshadow.exe - OriginalFileName: - PowerShell.EXE - pwsh.dll - wmic.exe - VSSADMIN.EXE - diskshadow.exe selection1_cli: CommandLine|contains|all: - shadow - delete selection2_img: - Image|endswith: \wbadmin.exe - OriginalFileName: WBADMIN.EXE selection2_cli: CommandLine|contains|all: - delete - catalog - quiet selection3_img: - Image|endswith: \vssadmin.exe - OriginalFileName: VSSADMIN.EXE selection3_cli: CommandLine|contains|all: - resize - shadowstorage CommandLine|contains: - unbounded - /MaxSize= condition: (all of selection1*) or (all of selection2*) or (all of selection3*) falsepositives: - Legitimate Administrator deletes Shadow Copies using operating systems utilities for legitimate reason - LANDesk LDClient Ivanti-PSModule (PS EncodedCommand) level: high