Query: rule covering Detects PowerShell command line contents that include a suspicious abnormal casing in the Net.Webclient (e.g. nEt.WEbCli
Matching passage: Sigma rule: Detects PowerShell command line contents that include a suspicious abnormal casing in the Net.Webclient (e.g. nEt.WEbCli. Logsource: windows / process_creation. Rule: title: Net WebClient Casing Anomalies id: c86133ad-4725-4bd0-8170-210788e0a7ba status: test description: Detects PowerShell command line contents that include a suspicious abnormal casing in the Net.Webclient (e.g. nEt.WEbCliEnT) string as used in obfuscation techniques references: - https://app.any.run/tasks/b9040c63-c140-479b-ad59-f1bb56ce7a97/ author: Florian Roth (Nextron Systems) date: 2022-05-24 modified: 2023-01-05 tags: - attack.execution - attack.t1059.001 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \powershell.exe - \pwsh.exe - OriginalFileName: - PowerShell.EXE - pwsh.dll selection_encoded: CommandLine|contains: - TgBlAFQALgB3AEUAQg - 4AZQBUAC4AdwBFAEIA - OAGUAVAAuAHcARQBCA - bgBFAHQALgB3AGUAYg - 4ARQB0AC4AdwBlAGIA - uAEUAdAAuAHcAZQBiA - TgBFAHQALgB3AGUAYg - OAEUAdAAuAHcAZQBiA - bgBlAFQALgB3AGUAYg - 4AZQBUAC4AdwBlAGIA - uAGUAVAAuAHcAZQBiA - TgBlAFQALgB3AGUAYg - OAGUAVAAuAHcAZQBiA - bgBFAFQALgB3AGUAYg - 4ARQBUAC4AdwBlAGIA - uAEUAVAAuAHcAZQBiA - bgBlAHQALgBXAGUAYg - 4AZQB0AC4AVwBlAGIA - uAGUAdAAuAFcAZQBiA - bgBFAHQALgBXAGUAYg - 4ARQB0AC4AVwBlAGIA - uAEUAdAAuAFcAZQBiA - TgBFAHQALgBXAGUAYg - OAEUAdAAuAFcAZQBiA - bgBlAFQALgBXAGUAYg - 4AZQBUAC4AVwBlAGIA - uAGUAVAAuAFcAZQBiA - TgBlAFQALgBXAGUAYg - OAGUAVAAuAFcAZQBiA - bgBFAFQALgBXAGUAYg - 4ARQBUAC4AVwBlAGIA - uAEUAVAAuAFcAZQBiA - bgBlAHQALgB3AEUAYg - 4AZQB0AC4AdwBFAGIA - uAGUAdAAuAHcARQBiA - TgBlAHQALgB3AEUAYg - OAGUAdAAuAHcARQBiA - bgBFAHQALgB3AEUAYg - 4ARQB0AC4AdwBFAGIA - uAEUAdAAuAHcARQBiA - TgBFAHQALgB3AEUAYg - OAEUAdAAuAHcARQBiA - bgBlAFQALgB3AEUAYg - 4AZQBUAC4AdwBFAGIA - uAGUAVAAuAHcARQBiA - TgBlAFQALgB3AEUAYg - OAGUAVAAuAHcARQBiA - bgBFAFQALgB3AEUAYg - 4ARQBUAC4AdwBFAGIA - uAEUAVAAuAHcARQBiA - TgBFAFQALgB3AEUAYg - OAEUAVAAuAHcARQBiA - bgBlAHQALgBXAEUAYg - 4AZQB0AC4AVwBFAGIA - uAGUAdAAuAFcARQBiA - TgBlAHQALgBXAEUAYg - OAGUAdAAuAFcARQBiA - bgBFAHQALgBXAEUAYg - 4ARQB0AC4AVwBFAGIA - uAEUAdAAuAFcARQBiA - TgBFAHQALgBXAEUAYg - OAEUAdAAuAFcARQBiA - bgBlAFQALgBXAEUAYg - 4AZQBUAC4AVwBFAGIA - uAGUAVAAuAFcARQBiA - TgBlAFQALgBXAEUAYg - OAGUAVAAuAFcARQBiA - bgBFAFQALgBXAEUAYg - 4ARQBUAC4AVwBFAGIA - uAEUAVAAuAFcARQBiA - TgBFAFQALgBXAEUAYg - OAEUAVAAuAFcARQBiA - bgBlAHQALgB3AGUAQg - 4AZQB0AC4AdwBlAEIA - uAGUAdAAuAHcAZQBCA - TgBlAHQALgB3AGUAQg - OAGUAdAAuAHcAZQBCA - bgBFAHQALgB3AGUAQg - 4ARQB0AC4AdwBlAEIA - uAEUAdAAuAHcAZQBCA - TgBFAHQALgB3AGUAQg - OAEUAdAAuAHcAZQBCA - bgBlAFQALgB3AGUAQg - 4AZQBUAC4AdwBlAEIA - uAGUAVAAuAHcAZQBCA - TgBlAFQALgB3AGUAQg - OAGU
Near-miss passage: Sigma rule: Detects the execution of "hh.exe" to open ".chm" files.. Logsource: windows / process_creation. Rule: title: HH.EXE Execution id: 68c8acb4-1b60-4890-8e82-3ddf7a6dba84 status: test description: Detects the execution of "hh.exe" to open ".chm" files. references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.001/T1218.001.md - https://eqllib.readthedocs.io/en/latest/analytics/b25aa548-7937-11e9-8f5c-d46d6d62a49e.html - https://www.zscaler.com/blogs/security-research/unintentional-leak-glimpse-attack-vectors-apt37 author: E.M. Anhaus (originally from Atomic Blue Detections, Dan Beavin), oscd.community date: 2019-10-24 modified: 2023-12-11 tags: - attack.stealth - attack.t1218.001 logsource: category: process_creation product: windows detection: selection_img: - OriginalFileName: HH.exe - Image|endswith: \hh.exe selection_cli: CommandLine|contains: .chm condition: all of selection_* falsepositives: - False positives are expected with legitimate ".CHM" level: low regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_hh_chm_execution/info.yml