Query: write Sigma for Adversaries may look for folders and drives shared on remote systems as a means of identifying sources of information to
Matching passage: Sigma rule: Adversaries may look for folders and drives shared on remote systems as a means of identifying sources of information to. Logsource: windows / ps_module. Rule: title: Suspicious Get Information for SMB Share - PowerShell Module id: 6942bd25-5970-40ab-af49-944247103358 status: test description: 'Adversaries may look for folders and drives shared on remote systems as a means of identifying sources of information to gather as a precursor for Collection and to identify potential systems of interest for Lateral Movement. Networks often contain shared network drives and folders that enable users to access file directories on various systems across a network. ' references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1069.002/T1069.002.md author: frack113 date: 2021-12-15 modified: 2022-12-02 tags: - attack.discovery - attack.t1069.001 logsource: product: windows category: ps_module definition: 0ad03ef1-f21b-4a79-8ce8-e6900c54b65b detection: selection: - Payload|contains: get-smbshare - ContextInfo|contains: get-smbshare condition: selection falsepositives: - Administrator script level: low
Near-miss passage: Sigma rule: Detects the creation of a named pipe as used by CobaltStrike. Logsource: windows / pipe_created. Rule: title: CobaltStrike Named Pipe id: d5601f8c-b26f-4ab0-9035-69e11a8d4ad2 related: - id: 85adeb13-4fc9-4e68-8a4a-c7cb2c336eb7 type: similar - id: 0e7163d4-9e19-4fa7-9be6-000c61aad77a type: similar status: test description: Detects the creation of a named pipe as used by CobaltStrike references: - https://twitter.com/d4rksystem/status/1357010969264873472 - https://labs.f-secure.com/blog/detecting-cobalt-strike-default-modules-via-named-pipe-analysis/ - https://github.com/SigmaHQ/sigma/issues/253 - https://blog.cobaltstrike.com/2021/02/09/learn-pipe-fitting-for-all-of-your-offense-projects/ - https://redcanary.com/threat-detection-report/threats/cobalt-strike/ author: Florian Roth (Nextron Systems), Wojciech Lesicki date: 2021-05-25 modified: 2022-10-31 tags: - attack.privilege-escalation - attack.stealth - attack.t1055 logsource: product: windows category: pipe_created definition: Note that you have to configure logging for Named Pipe Events in Sysmon config (Event ID 17 and Event ID 18). The basic configuration is in popular sysmon configuration (https://github.com/SwiftOnSecurity/sysmon-config), but it is worth verifying. You can also use other repo, e.g. https://github.com/Neo23x0/sysmon-config, https://github.com/olafhartong/sysmon-modular. How to test detection? You can always use Cobalt Strike, but also you can check powershell script from this site https://svch0st.medium.com/guide-to-named-pipes-and-hunting-for-cobalt-strike-pipes-dc46b2c5f575 detection: selection_MSSE: PipeName|contains|all: - \MSSE- - -server selection_postex: PipeName|startswith: \postex_ selection_status: PipeName|startswith: \status_ selection_msagent: PipeName|startswith: \msagent_ selection_mojo: PipeName|startswith: \mojo_ selection_interprocess: PipeName|startswith: \interprocess_ selection_samr: PipeName|startswith: \samr_ selection_netlogon: PipeName|startswith: \netlogon_ selection_srvsvc: PipeName|startswith: \srvsvc_ selection_lsarpc: PipeName|startswith: \lsarpc_ selection_wkssvc: PipeName|startswith: \wkssvc_ condition: 1 of selection* falsepositives: - Unknown level: critical