Query: detection rule: Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin at
Matching passage: Sigma rule: Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin at. Logsource: windows / process_creation. Rule: title: Suspicious Usage Of ShellExec_RunDLL id: d87bd452-6da1-456e-8155-7dc988157b7d related: - id: 36c5146c-d127-4f85-8e21-01bf62355d5a type: obsolete - id: 8823e85d-31d8-473e-b7f4-92da070f0fc6 type: similar status: test description: Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin attack references: - https://redcanary.com/blog/raspberry-robin/ - https://www.microsoft.com/en-us/security/blog/2022/10/27/raspberry-robin-worm-part-of-larger-ecosystem-facilitating-pre-ransomware-activity/ - https://github.com/SigmaHQ/sigma/issues/1009 author: Nasreddine Bencherchali (Nextron Systems) date: 2022-09-01 modified: 2022-12-30 tags: - attack.stealth logsource: category: process_creation product: windows detection: selection_openasrundll: CommandLine|contains: ShellExec_RunDLL selection_suspcli: CommandLine|contains: - \Desktop\ - \Temp\ - \Users\Public\ - comspec - iex - Invoke- - msiexec - odbcconf - regsvr32 condition: all of selection_* falsepositives: - Unknown level: high
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