order powershell_script

2021-10-09 10:30:36 +02:00
parent 77749510b7
commit 5c68c42058
39 changed files with 2 additions and 1 deletions
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+title: Powershell Timestomp
+id: c6438007-e081-42ce-9483-b067fbef33c3
+status: experimental
+author: frack113
+date: 2021/08/03
+description: Adversaries may modify file time attributes to hide new or changes to existing files. Timestomping is a technique that modifies the timestamps of a file (the modify, access, create, and change times), often to mimic files that are in the same folder. 
+references:
+    - https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1070.006/T1070.006.md
+    - https://www.offensive-security.com/metasploit-unleashed/timestomp/
+tags:
+    - attack.defense_evasion
+    - attack.t1070.006
+logsource:
+    product: windows
+    service: powershell
+    definition: EnableScriptBlockLogging must be set to enable
+detection:
+    selection_id:
+        EventID: 4104
+    selection_ioc:
+        ScriptBlockText|contains: 
+            - '.CreationTime ='
+            - '.LastWriteTime ='
+            - '.LastAccessTime ='
+            - '[IO.File]::SetCreationTime'
+            - '[IO.File]::SetLastAccessTime'
+            - '[IO.File]::SetLastWriteTime'
+    condition: selection_id and selection_ioc
+falsepositives:
+    - legitime admin script
+level: medium