itiB
48 lines
1.4 KiB
YAML
48 lines
1.4 KiB
YAML
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title: Suspicious Service Installed
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ruletype: Sigma
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author: xknow (@xknow_infosec), xorxes (@xor_xes)
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date: 2019/04/08
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description: Detects installation of NalDrv or PROCEXP152 services via registry-keys
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to non-system32 folders. Both services are used in the tool Ghost-In-The-Logs (https://github.com/bats3c/Ghost-In-The-Logs),
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which uses KDU (https://github.com/hfiref0x/KDU)
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detection:
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SELECTION_1:
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EventID: 12
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SELECTION_2:
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EventID: 13
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SELECTION_3:
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EventID: 14
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SELECTION_4:
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TargetObject:
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- HKLM\System\CurrentControlSet\Services\NalDrv\ImagePath
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- HKLM\System\CurrentControlSet\Services\PROCEXP152\ImagePath
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SELECTION_5:
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Image:
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- '*\procexp64.exe'
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- '*\procexp.exe'
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- '*\procmon64.exe'
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- '*\procmon.exe'
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SELECTION_6:
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Details:
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- '*\WINDOWS\system32\Drivers\PROCEXP152.SYS*'
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condition: ((SELECTION_1 or SELECTION_2 or SELECTION_3) and (SELECTION_4 and not
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(SELECTION_5)) and not (SELECTION_6))
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falsepositives:
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- Other legimate tools using this service names and drivers. Note - clever attackers
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may easily bypass this detection by just renaming the services. Therefore just Medium-level
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and don't rely on it.
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id: f2485272-a156-4773-82d7-1d178bc4905b
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level: medium
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logsource:
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category: registry_event
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product: windows
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modified: 2021/11/27
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references:
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- https://blog.dylan.codes/evading-sysmon-and-windows-event-logging/
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status: test
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tags:
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- attack.t1089
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- attack.t1562.001
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- attack.defense_evasion
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