Query: Sigma rule for Adversaries may establish persistence by executing malicious content triggered by user inactivity. Screensavers are prog
Matching passage: Sigma rule: Adversaries may establish persistence by executing malicious content triggered by user inactivity. Screensavers are prog. Logsource: windows / file_event. Rule: title: Suspicious Screensaver Binary File Creation id: 97aa2e88-555c-450d-85a6-229bcd87efb8 status: test description: 'Adversaries may establish persistence by executing malicious content triggered by user inactivity. Screensavers are programs that execute after a configurable time of user inactivity and consist of Portable Executable (PE) files with a .scr file extension ' references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.002/T1546.002.md author: frack113 date: 2021-12-29 modified: 2022-11-08 tags: - attack.privilege-escalation - attack.persistence - attack.t1546.002 logsource: product: windows category: file_event detection: selection: TargetFilename|endswith: .scr filter_generic: Image|endswith: - \Kindle.exe - \Bin\ccSvcHst.exe filter_tiworker: Image|endswith: \TiWorker.exe TargetFilename|endswith: \uwfservicingscr.scr condition: selection and not 1 of filter_* falsepositives: - Unknown level: medium
Near-miss passage: Sigma rule: Detects the use of the WMI command-line (WMIC) utility to identify and display various system information, including OS,. Logsource: windows / process_creation. Rule: title: Uncommon System Information Discovery Via Wmic.EXE id: 9d5a1274-922a-49d0-87f3-8c653483b909 related: - id: d85ecdd7-b855-4e6e-af59-d9c78b5b861e type: derived status: test description: 'Detects the use of the WMI command-line (WMIC) utility to identify and display various system information, including OS, CPU, GPU, and disk drive names; memory capacity; display resolution; and baseboard, BIOS, and GPU driver products/versions. Some of these commands were used by Aurora Stealer in late 2022/early 2023. ' references: - https://github.com/redcanaryco/atomic-red-team/blob/a2ccd19c37d0278b4ffa8583add3cf52060a5418/atomics/T1082/T1082.md#atomic-test-25---system-information-discovery-with-wmic - https://nwgat.ninja/getting-system-information-with-wmic-on-windows/ - https://blog.sekoia.io/aurora-a-rising-stealer-flying-under-the-radar - https://blog.cyble.com/2023/01/18/aurora-a-stealer-using-shapeshifting-tactics/ - https://app.any.run/tasks/a6aa0057-82ec-451f-8f99-55650ca537da/ - https://www.virustotal.com/gui/file/d6f6bc10ae0e634ed4301d584f61418cee18e5d58ad9af72f8aa552dc4aaeca3/behavior author: TropChaud date: 2023-01-26 modified: 2023-12-19 tags: - attack.discovery - attack.t1082 logsource: category: process_creation product: windows detection: selection_wmic: - Description: WMI Commandline Utility - OriginalFileName: wmic.exe - Image|endswith: \WMIC.exe selection_commands: CommandLine|contains: - LOGICALDISK get Name,Size,FreeSpace - os get Caption,OSArchitecture,Version condition: all of selection_* falsepositives: - Unknown level: medium simulation: - type: atomic-red-team name: System Information Discovery with WMIC technique: T1082 atomic_guid: 8851b73a-3624-4bf7-8704-aa312411565c regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_wmic_recon_system_info_uncommon/info.yml