Query: rule covering Detects attempts to delete Internet Information Services (IIS) log files via command line utilities, which is a common d
Matching passage: Sigma rule: Detects attempts to delete Internet Information Services (IIS) log files via command line utilities, which is a common d. Logsource: windows / process_creation. Rule: title: IIS WebServer Log Deletion via CommandLine Utilities id: 0649be4a-aeb0-45b0-b89e-7f1668f6d9c0 related: - id: 3eb8c339-a765-48cc-a150-4364c04652bf type: similar status: experimental description: 'Detects attempts to delete Internet Information Services (IIS) log files via command line utilities, which is a common defense evasion technique used by attackers to cover their tracks. Threat actors often abuse vulnerabilities in web applications hosted on IIS servers to gain initial access and later delete IIS logs to evade detection. ' references: - https://learn.microsoft.com/en-us/iis/manage/provisioning-and-managing-iis/managing-iis-log-file-storage author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-09-02 tags: - attack.stealth - attack.t1070 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \cmd.exe - \powershell_ise.exe - \powershell.exe - \pwsh.exe - OriginalFileName: - cmd.exe - powershell.exe - powershell_ise.exe - pwsh.dll selection_cli_del: CommandLine|contains: - 'del ' - 'erase ' - 'rm ' - 'remove-item ' - 'rmdir ' selection_cli_iis_dir: CommandLine|contains: \inetpub\logs\ condition: all of selection_* falsepositives: - Deletion of IIS logs that are older than a certain retention period as part of regular maintenance activities. - Legitimate schedule tasks or scripts that clean up log files regularly. level: medium
Near-miss passage: Sigma rule: Detects Non-Standard tools initiating a connection over port 3389 indicating possible lateral movement. An initial basel. Logsource: windows / network_connection. Rule: title: Outbound RDP Connections Over Non-Standard Tools id: ed74fe75-7594-4b4b-ae38-e38e3fd2eb23 status: test description: 'Detects Non-Standard tools initiating a connection over port 3389 indicating possible lateral movement. An initial baseline is required before using this utility to exclude third party RDP tooling that you might use. ' references: - https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0708 author: Markus Neis date: 2019-05-15 modified: 2024-02-09 tags: - attack.lateral-movement - attack.t1021.001 - car.2013-07-002 logsource: category: network_connection product: windows detection: selection: DestinationPort: 3389 Initiated: 'true' filter_main_mstsc: Image: - C:\Windows\System32\mstsc.exe - C:\Windows\SysWOW64\mstsc.exe filter_optional_dns: Image: C:\Windows\System32\dns.exe SourcePort: 53 Protocol: udp filter_optional_avast: Image|endswith: - \Avast Software\Avast\AvastSvc.exe - \Avast\AvastSvc.exe filter_optional_sysinternals_rdcman: Image|endswith: \RDCMan.exe filter_optional_chrome: Image: C:\Program Files\Google\Chrome\Application\chrome.exe filter_optional_third_party: Image|endswith: - \FSAssessment.exe - \FSDiscovery.exe - \MobaRTE.exe - \mRemote.exe - \mRemoteNG.exe - \Passwordstate.exe - \RemoteDesktopManager.exe - \RemoteDesktopManager64.exe - \RemoteDesktopManagerFree.exe - \RSSensor.exe - \RTS2App.exe - \RTSApp.exe - \spiceworks-finder.exe - \Terminals.exe - \ws_TunnelService.exe filter_optional_thor: Image|endswith: - \thor.exe - \thor64.exe filter_optional_splunk: Image|startswith: C:\Program Files\SplunkUniversalForwarder\bin\ filter_optional_sentinel_one: Image|endswith: \Ranger\SentinelRanger.exe filter_optional_firefox: Image: C:\Program Files\Mozilla Firefox\firefox.exe filter_optional_tsplus: Image: - C:\Program Files\TSplus\Java\bin\HTML5service.exe - C:\Program Files (x86)\TSplus\Java\bin\HTML5service.exe filter_optional_null: Image: null filter_optional_empty: Image: '' filter_optional_unknown: Image: <unknown process> condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Third party RDP tools level: high