Query: Sigma rule for Detects potential execution of MeshAgent which is a tool used for remote access. Historical data shows that threat actor
Matching passage: Sigma rule: Detects potential execution of MeshAgent which is a tool used for remote access. Historical data shows that threat actor. Logsource: windows / process_creation. Rule: title: Remote Access Tool - Potential MeshAgent Execution - Windows id: 2fbbe9ff-0afc-470b-bdc0-592198339968 related: - id: 22c45af6-f590-4d44-bab3-b5b2d2a2b6d9 type: similar status: experimental description: 'Detects potential execution of MeshAgent which is a tool used for remote access. Historical data shows that threat actors rename MeshAgent binary to evade detection. Matching command lines with the ''--meshServiceName'' argument can indicate that the MeshAgent is being used for remote access. ' references: - https://www.huntress.com/blog/know-thy-enemy-a-novel-november-case-on-persistent-remote-access - https://thecyberexpress.com/ukraine-hit-by-meshagent-malware-campaign/ - https://wazuh.com/blog/how-to-detect-meshagent-with-wazuh/ - https://www.security.com/threat-intelligence/medusa-ransomware-attacks author: Norbert Jaśniewicz (AlphaSOC) date: 2025-05-19 tags: - attack.command-and-control - attack.t1219.002 logsource: category: process_creation product: windows detection: selection: CommandLine|contains: --meshServiceName condition: selection falsepositives: - Environments that legitimately use MeshAgent level: medium
Near-miss passage: Sigma rule: Detects attempts to query system information directly from the Windows Registry.. Logsource: windows / process_creation. Rule: title: System Information Discovery via Registry Queries id: 0022869c-49f7-4ff2-ba03-85ac42ddac58 status: experimental description: Detects attempts to query system information directly from the Windows Registry. references: - https://cert.gov.ua/article/6277849 - https://github.com/redcanaryco/atomic-red-team/blob/75fa21076dcefa348a7521403cdd6bfc4e88623c/atomics/T1082/T1082.md - https://github.com/redcanaryco/atomic-red-team/blob/75fa21076dcefa348a7521403cdd6bfc4e88623c/atomics/T1124/T1124.md author: lazarg date: 2025-06-12 modified: 2025-10-25 tags: - attack.discovery - attack.t1082 logsource: category: process_creation product: windows detection: selection_cmd_reg: Image|endswith: \reg.exe CommandLine|contains: query CommandLine|contains|windash: -v selection_cmd_powershell: Image|endswith: - \powershell.exe - \pwsh.exe CommandLine|contains: - Get-ItemPropertyValue - gpv selection_keys: CommandLine|contains: - \SOFTWARE\Microsoft\Windows Defender - \SOFTWARE\Microsoft\Windows NT\CurrentVersion - \SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall - \SYSTEM\CurrentControlSet\Control\TimeZoneInformation - \SYSTEM\CurrentControlSet\Services condition: 1 of selection_cmd_* and selection_keys falsepositives: - Unlikely level: low regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_discovery_via_reg_queries/info.yml simulation: - type: atomic-red-team name: System Information Discovery technique: T1010 atomic_guid: 66703791-c902-4560-8770-42b8a91f7667 - type: atomic-red-team name: Discover OS Product Name via Registry technique: T1082 atomic_guid: be3b5fe3-a575-4fb8-83f6-ad4a68dd5ce7 - type: atomic-red-team name: Discover OS Build Number via Registry technique: T1082 atomic_guid: acfcd709-0013-4f1e-b9ee-bc1e7bafaaec