Analysis
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max time kernel
99s -
max time network
146s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
27-11-2022 02:54
Behavioral task
behavioral1
Sample
c95512b09c87d0edbdf990c053e9193d2479b8db30d652e6c04fe120931541c6.xls
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
c95512b09c87d0edbdf990c053e9193d2479b8db30d652e6c04fe120931541c6.xls
Resource
win10v2004-20220901-en
General
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Target
c95512b09c87d0edbdf990c053e9193d2479b8db30d652e6c04fe120931541c6.xls
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Size
169KB
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MD5
435fdab96799a0aa379643c71653dc8b
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SHA1
6fd489b5795d7e5c8de6fcdacf5b41494f7c247e
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SHA256
c95512b09c87d0edbdf990c053e9193d2479b8db30d652e6c04fe120931541c6
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SHA512
f92c5a2279b77027aacfb30efaff8067f1c32613aa8228a8582b3bd6747de3d3a2a8b3bb7338f54ce6215dc1d65d0f8ec69bbd3313c3ca1833e7a33f56fa1148
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SSDEEP
3072:01TLjmvu0Mb/edr16mK4WHbAkwJWVb95izQ7ITk9jYJtXwjv4xry:9DK6Mq
Malware Config
Signatures
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Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
cmd.execmd.execmd.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4552 4256 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4964 4256 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1188 4256 cmd.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 -
NTFS ADS 1 IoCs
Processes:
EXCEL.EXEdescription ioc process File created C:\Users\Admin\AppData\Local\Temp\C2D65E00\:Zone.Identifier:$DATA EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 4256 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 4256 EXCEL.EXE 4256 EXCEL.EXE 4256 EXCEL.EXE 4256 EXCEL.EXE 4256 EXCEL.EXE 4256 EXCEL.EXE 4256 EXCEL.EXE 4256 EXCEL.EXE 4256 EXCEL.EXE 4256 EXCEL.EXE 4256 EXCEL.EXE 4256 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 4256 wrote to memory of 4552 4256 EXCEL.EXE cmd.exe PID 4256 wrote to memory of 4552 4256 EXCEL.EXE cmd.exe PID 4256 wrote to memory of 4964 4256 EXCEL.EXE cmd.exe PID 4256 wrote to memory of 4964 4256 EXCEL.EXE cmd.exe PID 4256 wrote to memory of 1188 4256 EXCEL.EXE cmd.exe PID 4256 wrote to memory of 1188 4256 EXCEL.EXE cmd.exe PID 4552 wrote to memory of 1820 4552 cmd.exe attrib.exe PID 4552 wrote to memory of 1820 4552 cmd.exe attrib.exe -
Views/modifies file attributes 1 TTPs 1 IoCs
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\c95512b09c87d0edbdf990c053e9193d2479b8db30d652e6c04fe120931541c6.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/1188-141-0x0000000000000000-mapping.dmp
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memory/1820-142-0x0000000000000000-mapping.dmp
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memory/4256-138-0x00007FFFAA5D0000-0x00007FFFAA5E0000-memory.dmpFilesize
64KB
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memory/4256-135-0x00007FFFACC30000-0x00007FFFACC40000-memory.dmpFilesize
64KB
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memory/4256-136-0x00007FFFACC30000-0x00007FFFACC40000-memory.dmpFilesize
64KB
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memory/4256-137-0x00007FFFAA5D0000-0x00007FFFAA5E0000-memory.dmpFilesize
64KB
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memory/4256-132-0x00007FFFACC30000-0x00007FFFACC40000-memory.dmpFilesize
64KB
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memory/4256-133-0x00007FFFACC30000-0x00007FFFACC40000-memory.dmpFilesize
64KB
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memory/4256-134-0x00007FFFACC30000-0x00007FFFACC40000-memory.dmpFilesize
64KB
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memory/4256-144-0x00007FFFACC30000-0x00007FFFACC40000-memory.dmpFilesize
64KB
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memory/4256-145-0x00007FFFACC30000-0x00007FFFACC40000-memory.dmpFilesize
64KB
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memory/4256-146-0x00007FFFACC30000-0x00007FFFACC40000-memory.dmpFilesize
64KB
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memory/4256-147-0x00007FFFACC30000-0x00007FFFACC40000-memory.dmpFilesize
64KB
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memory/4552-139-0x0000000000000000-mapping.dmp
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memory/4964-140-0x0000000000000000-mapping.dmp