Query: Sigma rule for Detects execution of "Diskshadow.exe" in script mode using the "/s" flag where the script is located in a potentially su
Matching passage: Sigma rule: Detects execution of "Diskshadow.exe" in script mode using the "/s" flag where the script is located in a potentially su. Logsource: windows / process_creation. Rule: title: Diskshadow Script Mode - Execution From Potential Suspicious Location id: fa1a7e52-3d02-435b-81b8-00da14dd66c1 related: - id: 1dde5376-a648-492e-9e54-4241dd9b0c7f type: similar - id: 9f546b25-5f12-4c8d-8532-5893dcb1e4b8 type: similar - id: 56b1dde8-b274-435f-a73a-fb75eb81262a type: similar - id: 0c2f8629-7129-4a8a-9897-7e0768f13ff2 type: similar status: test description: Detects execution of "Diskshadow.exe" in script mode using the "/s" flag where the script is located in a potentially suspicious location. references: - https://bohops.com/2018/03/26/diskshadow-the-return-of-vss-evasion-persistence-and-active-directory-database-extraction/ - https://www.ired.team/offensive-security/credential-access-and-credential-dumping/ntds.dit-enumeration - https://medium.com/@cyberjyot/lolbin-execution-via-diskshadow-f6ff681a27a4 - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/diskshadow - https://www.lifars.com/wp-content/uploads/2022/01/GriefRansomware_Whitepaper-2.pdf - https://www.zscaler.com/blogs/security-research/technical-analysis-crytox-ransomware - https://research.checkpoint.com/2022/evilplayout-attack-against-irans-state-broadcaster/ author: Nasreddine Bencherchali (Nextron Systems) date: 2023-09-15 modified: 2024-03-05 tags: - attack.stealth - attack.t1218 logsource: category: process_creation product: windows detection: selection_img: - OriginalFileName: diskshadow.exe - Image|endswith: \diskshadow.exe selection_cli: CommandLine|contains|windash: '-s ' selection_paths: CommandLine|contains: - :\Temp\ - :\Windows\Temp\ - \AppData\Local\ - \AppData\Roaming\ - \ProgramData\ - \Users\Public\ condition: all of selection_* falsepositives: - False positives may occur if you execute the script from one of the paths mentioned in the rule. Apply additional filters that fits your org needs. level: medium
Near-miss passage: Sigma rule: Indicates access attempt to the PRT resource which can be used to move laterally into an organization or perform credent. Logsource: azure / riskdetection. Rule: title: Primary Refresh Token Access Attempt id: a84fc3b1-c9ce-4125-8e74-bdcdb24021f1 status: test description: Indicates access attempt to the PRT resource which can be used to move laterally into an organization or perform credential theft references: - https://learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#possible-attempt-to-access-primary-refresh-token-prt - https://learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins author: Mark Morowczynski '@markmorow', Gloria Lee, '@gleeiamglo' date: 2023-09-07 tags: - attack.t1528 - attack.credential-access logsource: product: azure service: riskdetection detection: selection: riskEventType: attemptedPrtAccess condition: selection falsepositives: - This detection is low-volume and is seen infrequently in most organizations. When this detection appears it's high risk, and users should be remediated. level: high