title: Credentials Dumping Tools Accessing LSASS Memory
author: Florian Roth, Roberto Rodriguez, Dimitrios Slamaris, Mark Russinovich, Thomas
    Patzke, Teymur Kheirkhabarov, Sherif Eldeeb, James Dickenson, Aleksey Potapov,
    oscd.community (update)
date: 2017/02/16
description: Detects process access LSASS memory which is typical for credentials
    dumping tools
detection:
    SELECTION_1:
        EventID: 10
    SELECTION_10:
        GrantedAccess: '*0x143a*'
    SELECTION_11:
        GrantedAccess: '*0x1418*'
    SELECTION_12:
        GrantedAccess: '*0x1f0fff*'
    SELECTION_13:
        GrantedAccess: '*0x1f1fff*'
    SELECTION_14:
        GrantedAccess: '*0x1f2fff*'
    SELECTION_15:
        GrantedAccess: '*0x1f3fff*'
    SELECTION_16:
        SourceImage: '*\wmiprvse.exe'
    SELECTION_17:
        SourceImage: '*\taskmgr.exe'
    SELECTION_18:
        SourceImage: '*\procexp64.exe'
    SELECTION_19:
        SourceImage: '*\procexp.exe'
    SELECTION_2:
        TargetImage: '*\lsass.exe'
    SELECTION_20:
        SourceImage: '*\lsm.exe'
    SELECTION_21:
        SourceImage: '*\MsMpEng.exe'
    SELECTION_22:
        SourceImage: '*\csrss.exe'
    SELECTION_23:
        SourceImage: '*\wininit.exe'
    SELECTION_24:
        SourceImage: '*\vmtoolsd.exe'
    SELECTION_3:
        GrantedAccess: '*0x40*'
    SELECTION_4:
        GrantedAccess: '*0x1000*'
    SELECTION_5:
        GrantedAccess: '*0x1400*'
    SELECTION_6:
        GrantedAccess: '*0x100000*'
    SELECTION_7:
        GrantedAccess: '*0x1410*'
    SELECTION_8:
        GrantedAccess: '*0x1010*'
    SELECTION_9:
        GrantedAccess: '*0x1438*'
    condition: (SELECTION_1 and (SELECTION_2 and (SELECTION_3 or SELECTION_4 or SELECTION_5
        or SELECTION_6 or SELECTION_7 or SELECTION_8 or SELECTION_9 or SELECTION_10
        or SELECTION_11 or SELECTION_12 or SELECTION_13 or SELECTION_14 or SELECTION_15))
        and  not ((SELECTION_16 or SELECTION_17 or SELECTION_18 or SELECTION_19 or
        SELECTION_20 or SELECTION_21 or SELECTION_22 or SELECTION_23 or SELECTION_24)))
falsepositives:
- Legitimate software accessing LSASS process for legitimate reason; update the whitelist
    with it
fields:
- ComputerName
- User
- SourceImage
id: 32d0d3e2-e58d-4d41-926b-18b520b2b32d
level: high
logsource:
    category: process_access
    product: windows
modified: 2021/10/20
references:
- https://onedrive.live.com/view.aspx?resid=D026B4699190F1E6!2843&ithint=file%2cpptx&app=PowerPoint&authkey=!AMvCRTKB_V1J5ow
- https://cyberwardog.blogspot.com/2017/03/chronicles-of-threat-hunter-hunting-for_22.html
- https://www.slideshare.net/heirhabarov/hunting-for-credentials-dumping-in-windows-environment
- http://security-research.dyndns.org/pub/slides/FIRST2017/FIRST-2017_Tom-Ueltschi_Sysmon_FINAL_notes.pdf
status: experimental
tags:
- attack.credential_access
- attack.t1003.001
- attack.t1003
- attack.s0002
- car.2019-04-004
yml_filename: sysmon_cred_dump_lsass_access.yml
yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/process_access