Analysis
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max time kernel
149s -
max time network
144s -
platform
windows10_x64 -
resource
win10-20220414-en -
submitted
07-07-2022 03:31
Behavioral task
behavioral1
Sample
b495f92e72a331f6510a295bd57364789825d0d7c476cc89e4fd21be0fa1a5ba.xls
Resource
win10-20220414-en
General
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Target
b495f92e72a331f6510a295bd57364789825d0d7c476cc89e4fd21be0fa1a5ba.xls
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Size
95KB
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MD5
100b1109fe962bb8f63d34da5263deac
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SHA1
57b6f0541ba8fbf9e3ac3eb70fc7bec79ee97fc3
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SHA256
b495f92e72a331f6510a295bd57364789825d0d7c476cc89e4fd21be0fa1a5ba
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SHA512
0217c2fe091d8a12291954db456bfaf436debf81740f7acd8bbdba7f1eca2240f8f2fa9f23e55f52fa5e9edf749f487eb22fad2685458bd0523ba4fda76e7441
Malware Config
Extracted
http://www.sunflowerlaboratory.in/fonts/79Tq62ly/
http://dirigent.co.uk/vardagsekonomi/iC36jJ4J1cf/
http://agtrade.hu/images/kiQYmOs2tSKq/
https://www.zachboyle.com/wp-admin/EA470ZrTGNkuA/
Signatures
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Process spawned unexpected child process 4 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
regsvr32.exeregsvr32.exeregsvr32.exeregsvr32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3092 4664 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4524 4664 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4464 4664 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4984 4664 regsvr32.exe EXCEL.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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 4664 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 4664 EXCEL.EXE 4664 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 4664 EXCEL.EXE 4664 EXCEL.EXE 4664 EXCEL.EXE 4664 EXCEL.EXE 4664 EXCEL.EXE 4664 EXCEL.EXE 4664 EXCEL.EXE 4664 EXCEL.EXE 4664 EXCEL.EXE 4664 EXCEL.EXE 4664 EXCEL.EXE 4664 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 4664 wrote to memory of 3092 4664 EXCEL.EXE regsvr32.exe PID 4664 wrote to memory of 3092 4664 EXCEL.EXE regsvr32.exe PID 4664 wrote to memory of 4524 4664 EXCEL.EXE regsvr32.exe PID 4664 wrote to memory of 4524 4664 EXCEL.EXE regsvr32.exe PID 4664 wrote to memory of 4464 4664 EXCEL.EXE regsvr32.exe PID 4664 wrote to memory of 4464 4664 EXCEL.EXE regsvr32.exe PID 4664 wrote to memory of 4984 4664 EXCEL.EXE regsvr32.exe PID 4664 wrote to memory of 4984 4664 EXCEL.EXE regsvr32.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\b495f92e72a331f6510a295bd57364789825d0d7c476cc89e4fd21be0fa1a5ba.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\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci1.ocx2⤵
- Process spawned unexpected child process
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci2.ocx2⤵
- Process spawned unexpected child process
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci3.ocx2⤵
- Process spawned unexpected child process
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci4.ocx2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/3092-267-0x0000000000000000-mapping.dmp
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memory/4464-269-0x0000000000000000-mapping.dmp
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memory/4524-268-0x0000000000000000-mapping.dmp
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memory/4664-117-0x00007FFCCD3A0000-0x00007FFCCD3B0000-memory.dmpFilesize
64KB
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memory/4664-118-0x00007FFCCD3A0000-0x00007FFCCD3B0000-memory.dmpFilesize
64KB
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memory/4664-119-0x00007FFCCD3A0000-0x00007FFCCD3B0000-memory.dmpFilesize
64KB
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memory/4664-120-0x00007FFCCD3A0000-0x00007FFCCD3B0000-memory.dmpFilesize
64KB
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memory/4664-129-0x00007FFCCA380000-0x00007FFCCA390000-memory.dmpFilesize
64KB
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memory/4664-130-0x00007FFCCA380000-0x00007FFCCA390000-memory.dmpFilesize
64KB
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memory/4984-272-0x0000000000000000-mapping.dmp