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Analysis
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max time kernel
157s -
max time network
187s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
05/12/2022, 14:20
Behavioral task
behavioral1
Sample
b4c0672704891c561e9af948430d71c8fb1719ee5d130e26143df577f53ce406.xls
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
b4c0672704891c561e9af948430d71c8fb1719ee5d130e26143df577f53ce406.xls
Resource
win10v2004-20221111-en
General
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Target
b4c0672704891c561e9af948430d71c8fb1719ee5d130e26143df577f53ce406.xls
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Size
36KB
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MD5
5f5609ad898d0df50d8a97c273bb63aa
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SHA1
e2c62906409344a63fbe539576bad789733aba4f
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SHA256
b4c0672704891c561e9af948430d71c8fb1719ee5d130e26143df577f53ce406
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SHA512
7163be300200036f4148132cacc85649f4ced3058afedfd07622372dd3e49f31be4fb0e35c5e9e9d476edb43efe4aa7892ebd84a7106a79a82d0ee4c55f002f0
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SSDEEP
768:6///I12wzlFl/sEMeapuONmjDpP1VAqbhxmaR22vFItmd8aYNiKydp5VbRuUr8vq:6///I12wzlFl/sEMeapuONmjDpP1VAqz
Malware Config
Signatures
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Process spawned suspicious child process 1 IoCs
This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2220 4524 DW20.EXE 80 -
Checks processor information in registry 2 TTPs 6 IoCs
Processor information is often read in order to detect sandboxing environments.
description 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 Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 dwwin.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz dwwin.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString dwwin.exe -
Enumerates system info in registry 2 TTPs 5 IoCs
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS dwwin.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU dwwin.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
pid Process 4524 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 17 IoCs
pid Process 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE 4524 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4524 wrote to memory of 3276 4524 EXCEL.EXE 85 PID 4524 wrote to memory of 3276 4524 EXCEL.EXE 85 PID 4524 wrote to memory of 2220 4524 EXCEL.EXE 88 PID 4524 wrote to memory of 2220 4524 EXCEL.EXE 88 PID 2220 wrote to memory of 2964 2220 DW20.EXE 89 PID 2220 wrote to memory of 2964 2220 DW20.EXE 89
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\b4c0672704891c561e9af948430d71c8fb1719ee5d130e26143df577f53ce406.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4524 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:3276
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C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE"C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 46962⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:2220 -
C:\Windows\system32\dwwin.exeC:\Windows\system32\dwwin.exe -x -s 46963⤵
- Checks processor information in registry
- Enumerates system info in registry
PID:2964
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵PID:1184
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 460 -p 4524 -ip 45241⤵PID:4248