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patel-bhavin
83 lines
3.5 KiB
YAML
83 lines
3.5 KiB
YAML
name: Windows Password Managers Discovery
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id: a3b3bc96-1c4f-4eba-8218-027cac739a48
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version: 1
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date: '2022-11-30'
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author: Teoderick Contreras, Splunk
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type: Hunting
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datamodel:
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- Endpoint
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description: The following analytic identifies a process command line that retrieves information related to password manager software.
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This technique was seen in several post exploitation tools like winpeas that are being used by Ransomware Prestige to gather this type of information.
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Password Managers applications are designed to store user credentials, normally in an encrypted database. Credentials are typically accessible after a
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user provides a master password that unlocks the database. After the database is unlocked, these credentials may be copied to memory.
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These databases can be stored as files on disk. Due to this password manager software designed adversaries may find or look for keywords related to the Password
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Manager databases that can be stolen or extracted for further attacks.
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search: '| tstats `security_content_summariesonly` count min(_time) as firstTime max(_time) as lastTime from datamodel=Endpoint.Processes
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where Processes.process = "*dir *" OR Processes.process = "*findstr*"
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AND Processes.process IN ( "*.kdbx*", "*credential*", "*key3.db*","*pass*", "*cred*", "*key4.db*", "*accessTokens*", "*access_tokens*", "*.htpasswd*", "*Ntds.dit*")
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by Processes.process_name Processes.original_file_name Processes.process Processes.process_id Processes.process_guid
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Processes.parent_process_name Processes.parent_process Processes.parent_process_guid Processes.dest Processes.user
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| `drop_dm_object_name(Processes)`
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| `security_content_ctime(firstTime)`
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| `security_content_ctime(lastTime)`
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| `windows_password_managers_discovery_filter`'
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how_to_implement: To successfully implement this search, you need to be ingesting
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logs with the process name, parent process, and command-line executions from your
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endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the
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Sysmon TA. Tune and filter known instances of wermgr.exe may be used.
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known_false_positives: unknown
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references:
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- https://attack.mitre.org/techniques/T1555/005/
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- https://github.com/carlospolop/PEASS-ng/tree/master/winPEAS
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- https://www.microsoft.com/en-us/security/blog/2022/10/14/new-prestige-ransomware-impacts-organizations-in-ukraine-and-poland/
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tags:
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analytic_story:
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- Windows Post-Exploitation
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- Prestige Ransomware
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asset_type: Endpoint
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cis20:
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- CIS 3
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- CIS 5
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- CIS 16
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confidence: 50
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context:
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- Source:Endpoint
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- Stage:Discovery
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- Stage:Recon
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dataset:
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- https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/malware/winpeas/winpeas_search_pwd_db/dir-db-sysmon.log
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impact: 50
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kill_chain_phases:
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- Exploitation
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message: a process with commandline $process$ that can retrieve information related to password manager databases in $dest$
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mitre_attack_id:
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- T1555.005
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nist:
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- DE.CM
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observable:
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- name: dest
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type: Hostname
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role:
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- Victim
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product:
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- Splunk Enterprise
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- Splunk Enterprise Security
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- Splunk Cloud
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required_fields:
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- _time
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- Processes.dest
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- Processes.user
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- Processes.parent_process_name
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- Processes.parent_process
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- Processes.original_file_name
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- Processes.process_name
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- Processes.process
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- Processes.process_id
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- Processes.parent_process_path
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- Processes.process_path
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- Processes.parent_process_id
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- Processes.parent_process_guid
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- Processes.process_guid
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risk_score: 25
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security_domain: endpoint
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