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P4T12ICK
76 lines
2.7 KiB
YAML
76 lines
2.7 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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status: production
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type: Hunting
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description: The following analytic identifies a process command line that retrieves
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information related to password manager software. This technique was seen in several
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post exploitation tools like winpeas that are being used by Ransomware Prestige
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to gather this type of information. Password Managers applications are designed
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to store user credentials, normally in an encrypted database. Credentials are typically
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accessible after a user provides a master password that unlocks the database. After
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the database is unlocked, these credentials may be copied to memory. These databases
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can be stored as files on disk. Due to this password manager software designed adversaries
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may find or look for keywords related to the Password Manager databases that can
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be stolen or extracted for further attacks.
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data_source:
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- Sysmon Event ID 1
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search:
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selection1:
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CommandLine: '*dir *'
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selection2:
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CommandLine:
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- '*.kdbx*'
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- '*credential*'
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- '*key3.db*'
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- '*pass*'
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- '*cred*'
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- '*key4.db*'
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- '*accessTokens*'
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- '*access_tokens*'
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- '*.htpasswd*'
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- '*Ntds.dit*'
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selection3:
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CommandLine: '*findstr*'
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condition: selection1 or selection2 or selection3
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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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confidence: 50
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impact: 50
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message: a process with commandline $process$ that can retrieve information related
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to password manager databases in $dest$
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mitre_attack_id:
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- T1555.005
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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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risk_score: 25
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security_domain: endpoint
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tests:
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- name: True Positive Test
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attack_data:
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- data: https://media.githubusercontent.com/media/splunk/attack_data/master/datasets/malware/winpeas/winpeas_search_pwd_db/dir-db-sysmon.log
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source: XmlWinEventLog:Microsoft-Windows-Sysmon/Operational
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sourcetype: xmlwineventlog
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update_timestamp: true
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