Query: write Sigma for Detects the deletion of the "Zone.Identifier" ADS by an uncommon process. Attackers can leverage this in order to bypass
Matching passage: Sigma rule: Detects the deletion of the "Zone.Identifier" ADS by an uncommon process. Attackers can leverage this in order to bypass. Logsource: windows / file_delete. Rule: title: ADS Zone.Identifier Deleted By Uncommon Application id: 3109530e-ab47-4cc6-a953-cac5ebcc93ae related: - id: 7eac0a16-5832-4e81-865f-0268a6d19e4b type: similar status: test description: Detects the deletion of the "Zone.Identifier" ADS by an uncommon process. Attackers can leverage this in order to bypass security restrictions that make use of the ADS such as Microsoft Office apps. references: - https://securityliterate.com/how-malware-abuses-the-zone-identifier-to-circumvent-detection-and-analysis/ - Internal Research author: Nasreddine Bencherchali (Nextron Systems) date: 2023-09-04 modified: 2025-07-04 tags: - attack.stealth - attack.t1070.004 logsource: product: windows category: file_delete detection: selection: TargetFilename|endswith: :Zone.Identifier filter_main_generic: Image: - C:\Program Files\PowerShell\7-preview\pwsh.exe - C:\Program Files\PowerShell\7\pwsh.exe - C:\Windows\explorer.exe - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe - C:\Windows\SysWOW64\explorer.exe - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe filter_optional_browsers_chrome: Image: - C:\Program Files (x86)\Google\Chrome\Application\chrome.exe - C:\Program Files\Google\Chrome\Application\chrome.exe filter_optional_browsers_firefox: Image: - C:\Program Files (x86)\Mozilla Firefox\firefox.exe - C:\Program Files\Mozilla Firefox\firefox.exe filter_optional_browsers_msedge: Image: - C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe - C:\Program Files\Microsoft\Edge\Application\msedge.exe condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Other third party applications not listed. level: medium
Near-miss passage: Sigma rule: Detects malicious behavior where the MMC utility (`mmc.exe`) executes files with reversed extensions caused by Right-to-. Logsource: windows / process_creation. Rule: title: MMC Executing Files with Reversed Extensions Using RTLO Abuse id: 9cfe4b27-1e56-48b4-b7a8-d46851c91a44 status: experimental description: Detects malicious behavior where the MMC utility (`mmc.exe`) executes files with reversed extensions caused by Right-to-Left Override (RLO) abuse, disguising them as document formats. references: - https://www.unicode.org/versions/Unicode5.2.0/ch02.pdf - https://en.wikipedia.org/wiki/Right-to-left_override - https://tria.ge/241015-l98snsyeje/behavioral2 author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-02-05 tags: - attack.execution - attack.stealth - attack.t1204.002 - attack.t1218.014 - attack.t1036.002 logsource: category: process_creation product: windows detection: selection_image: - Image|endswith: \mmc.exe - OriginalFileName: MMC.exe selection_commandline: CommandLine|contains: - cod.msc - fdp.msc - ftr.msc - lmth.msc - slx.msc - tdo.msc - xcod.msc - xslx.msc - xtpp.msc condition: all of selection_* falsepositives: - Legitimate administrative actions using MMC to execute misnamed `.msc` files. - Unconventional but non-malicious usage of RLO or reversed extensions. level: high