Query: write Sigma for Detects execution of mshta.exe with file types that looks like they do not typically represent HTA (HTML Application) co
Matching passage: Sigma rule: Detects execution of mshta.exe with file types that looks like they do not typically represent HTA (HTML Application) co. Logsource: windows / process_creation. Rule: title: MSHTA Execution with Suspicious File Extensions id: cc7abbd0-762b-41e3-8a26-57ad50d2eea3 status: test description: 'Detects execution of mshta.exe with file types that looks like they do not typically represent HTA (HTML Application) content, such as .png, .jpg, .zip, .pdf, and others, which are often polyglots. MSHTA is a legitimate Windows utility for executing HTML Applications containing VBScript or JScript. Threat actors often abuse this lolbin utility to download and execute malicious scripts disguised as benign files or hosted under misleading extensions to evade detection. ' references: - http://blog.sevagas.com/?Hacking-around-HTA-files - https://0x00sec.org/t/clientside-exploitation-in-2018-how-pentesting-has-changed/7356 - https://learn.microsoft.com/en-us/previous-versions/dotnet/framework/data/xml/xslt/xslt-stylesheet-scripting-using-msxsl-script - https://medium.com/tsscyber/pentesting-and-hta-bypassing-powershell-constrained-language-mode-53a42856c997 - https://twitter.com/mattifestation/status/1326228491302563846 - https://www.virustotal.com/gui/file/c1f27d9795a2eba630db8a043580a0761798f06370fb1317067805f8a845b00c author: Diego Perez (@darkquassar), Markus Neis, Swisscom (Improve Rule), Swachchhanda Shrawan Poudel (Nextron Systems) date: 2019-02-22 modified: 2025-05-12 tags: - attack.stealth - attack.t1140 - attack.t1218.005 - attack.execution - attack.t1059.007 - cve.2020-1599 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \mshta.exe - OriginalFileName: mshta.exe selection_cli: CommandLine|contains: - .7z - .avi - .bat - .bmp - .conf - .csv - .dll - .doc - .gif - .gz - .ini - .jpe - .jpg - .json - .lnk - .log - .mkv - .mp3 - .mp4 - .pdf - .png - .ppt - .rar - .rtf - .svg - .tar - .tmp - .txt - .xls - .xml - .yaml - .yml - .zip - vbscript condition: all of selection_* falsepositives: - False positives depend on scripts and administrative tools used in the monitored environment level: high
Near-miss passage: Sigma rule: Detects usage of the "Set-Service" powershell cmdlet to configure a new SecurityDescriptor that allows a service to be h. Logsource: windows / ps_script. Rule: title: Abuse of Service Permissions to Hide Services Via Set-Service - PS id: 953945c5-22fe-4a92-9f8a-a9edc1e522da related: - id: 514e4c3a-c77d-4cde-a00f-046425e2301e type: similar status: test description: Detects usage of the "Set-Service" powershell cmdlet to configure a new SecurityDescriptor that allows a service to be hidden from other utilities such as "sc.exe", "Get-Service"...etc. (Works only in powershell 7) references: - https://twitter.com/Alh4zr3d/status/1580925761996828672 - https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.management/set-service?view=powershell-7.2 author: Nasreddine Bencherchali (Nextron Systems) date: 2022-10-17 tags: - attack.persistence - attack.privilege-escalation - attack.execution - attack.stealth - attack.t1574.011 logsource: product: windows category: ps_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection: ScriptBlockText|contains|all: - 'Set-Service ' - DCLCWPDTSD ScriptBlockText|contains: - '-SecurityDescriptorSddl ' - '-sd ' condition: selection falsepositives: - Rare intended use of hidden services - Rare FP could occur due to the non linearity of the ScriptBlockText log level: high