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refactor(rules): Remove write_minidump_file macro #550

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Merged
rabbitstack merged 1 commit into from
Jan 2, 2026
Merged

refactor(rules): Remove write_minidump_file macro #550

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6 changes: 3 additions & 3 deletions rules/credential_access_lsass_memory_dumping.yml
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
name: LSASS memory dumping via legitimate or offensive tools
id: 335795af-246b-483e-8657-09a30c102e63
version: 1.0.4
version: 1.2.0
description: |
Detects an attempt to dump the LSAAS memory to the disk by employing legitimate
tools such as procdump, Task Manager, Process Explorer or built-in Windows tools
Expand All @@ -23,7 +23,7 @@ condition: >
sequence
maxspan 2m
by ps.uuid
|open_process and
|open_process and
ps.access.mask.names in ('ALL_ACCESS', 'CREATE_PROCESS', 'VM_READ', 'DUP_HANDLE') and
evt.arg[exe] imatches '?:\\Windows\\System32\\lsass.exe' and
ps.exe not imatches
Expand All @@ -32,7 +32,7 @@ condition: >
'?:\\ProgramData\\Microsoft\\Windows Defender\\*\\MsMpEng.exe'
)
|
|write_minidump_file|
|create_file and (file.extension iin ('.dmp', '.mdmp', '.dump') or is_minidump(file.path))|

output: >
Detected an attempt by `%1.ps.name` process to access and read
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19 changes: 0 additions & 19 deletions rules/macros/macros.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -204,25 +204,6 @@
description: >
Detects when either unsigned or untrusted DLL is loaded into process address space.

- macro: write_minidump_file
expr: >
create_file and
(
file.extension iin
(
'.dmp',
'.mdmp',
'.dump'
) or
is_minidump(file.path)
)
description: |
Detects a process writing the minidump file. Minidump files are used for crash
reporting as they contain a snapshot of the process' memory such as local variables
or heap objects. Processes can create minidump files by calling into the MiniDumpWriteDump()
function. This macro checks the well-known extensions of the minidump files as well as
the minidump signature.

- macro: msoffice_binaries
list: [EXCEL.EXE, WINWORD.EXE, MSACCESS.EXE, POWERPNT.EXE, visio.exe, mspub.exe, fltldr.exe, eqnedt32.exe]

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