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Merge pull request #3966 from frack113/PendingFileRenameOperations

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Add registry_set_susp_pendingfilerenameoperations
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frack113
2023-01-27 17:55:51 +01:00
committed by GitHub
parent 2ba6c3c3f5 7ea3db18f7
commit dabf286c17
2 changed files with 36 additions and 0 deletions
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.github/workflows/known-FPs.csv
+2
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@@ -52,3 +52,5 @@ b69888d4-380c-45ce-9cf9-d9ce46e67821;Executable in ADS;7z\.exe
65236ec7-ace0-4f0c-82fd-737b04fd4dcb;EVTX Created In Uncommon Location;powershell\.exe
a62b37e0-45d3-48d9-a517-90c1a1b0186b;Eventlog Cleared;Computer: DESKTOP-A8CALR3
a62b37e0-45d3-48d9-a517-90c1a1b0186b;Eventlog Cleared;Computer: WIN-06FB45IHQ35
4eec988f-7bf0-49f1-8675-1e6a510b3a2a;Potential PendingFileRenameOperations Tamper;target\.exe
4eec988f-7bf0-49f1-8675-1e6a510b3a2a;Potential PendingFileRenameOperations Tamper;target\.tmp
1 RuleId RuleName MatchString
52 65236ec7-ace0-4f0c-82fd-737b04fd4dcb EVTX Created In Uncommon Location powershell\.exe
53 a62b37e0-45d3-48d9-a517-90c1a1b0186b Eventlog Cleared Computer: DESKTOP-A8CALR3
54 a62b37e0-45d3-48d9-a517-90c1a1b0186b Eventlog Cleared Computer: WIN-06FB45IHQ35
55 4eec988f-7bf0-49f1-8675-1e6a510b3a2a Potential PendingFileRenameOperations Tamper target\.exe
56 4eec988f-7bf0-49f1-8675-1e6a510b3a2a Potential PendingFileRenameOperations Tamper target\.tmp
rules/windows/registry/registry_set/registry_set_susp_pendingfilerenameoperations.yml
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@@ -0,0 +1,34 @@
title: Potential PendingFileRenameOperations Tamper
id: 4eec988f-7bf0-49f1-8675-1e6a510b3a2a
status: experimental
description: Detect changes to the "PendingFileRenameOperations" registry key from uncommon or suspicious images lcoations to stage currently used files for rename after reboot.
references:
- https://any.run/report/3ecd4763ffc944fdc67a9027e459cd4f448b1a8d1b36147977afaf86bbf2a261/64b0ba45-e7ce-423b-9a1d-5b4ea59521e6
- https://devblogs.microsoft.com/scripting/determine-pending-reboot-statuspowershell-style-part-1/
- https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-2000-server/cc960241(v=technet.10)?redirectedfrom=MSDN
- https://www.trendmicro.com/en_us/research/21/j/purplefox-adds-new-backdoor-that-uses-websockets.html
- https://www.trendmicro.com/en_us/research/19/i/purple-fox-fileless-malware-with-rookit-component-delivered-by-rig-exploit-kit-now-abuses-powershell.html
author: frack113
date: 2023/01/27
tags:
- attack.defense_evasion
- attack.t1036.003
logsource:
category: registry_set
product: windows
detection:
selection_main:
EventType: 'SetValue'
TargetObject|contains: '\CurrentControlSet\Control\Session Manager\PendingFileRenameOperations'
selection_susp_paths:
Image|contains:
- '\AppData\Local\Temp\'
- '\Users\Public\'
selection_susp_images:
Image|endswith:
- '\reg.exe'
- '\regedit.exe'
condition: selection_main and 1 of selection_susp_*
falsepositives:
- Installers and updaters may set currently in use files for rename after a reboot.
level: medium