Analysis
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max time kernel
117s -
max time network
131s -
platform
windows10_x64 -
resource
win10 -
submitted
20/10/2020, 22:25
Static task
static1
Behavioral task
behavioral1
Sample
doc_pack-38398360.xls
Resource
win7
Behavioral task
behavioral2
Sample
doc_pack-38398360.xls
Resource
win10
General
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Target
doc_pack-38398360.xls
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Size
62KB
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MD5
994884403814c003f99e81a61cb09201
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SHA1
bd75db73cd67d6b0db988637c352b8525e0fba44
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SHA256
065d0f5d8a3544579e177bc9446c61ba3b97f88f17911f6732e161d113cc2ccb
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SHA512
b08df51a78b2f556a3979378fb974c883e4f1e0273c23088a61a34cb295b27658eb6aab1c915b7475ca57cd3b26fc180dd300dabcc31852f20865fd6a14ac575
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 2072 3676 DW20.EXE 66 -
Checks processor information in registry 2 TTPs 3 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 -
Enumerates system info in registry 2 TTPs 3 IoCs
description 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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3676 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 3676 EXCEL.EXE 3676 EXCEL.EXE 2144 dwwin.exe 2144 dwwin.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
pid Process 3676 EXCEL.EXE 3676 EXCEL.EXE 3676 EXCEL.EXE 3676 EXCEL.EXE 3676 EXCEL.EXE 3676 EXCEL.EXE 3676 EXCEL.EXE 3676 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3676 wrote to memory of 2072 3676 EXCEL.EXE 76 PID 3676 wrote to memory of 2072 3676 EXCEL.EXE 76 PID 2072 wrote to memory of 2144 2072 DW20.EXE 77 PID 2072 wrote to memory of 2144 2072 DW20.EXE 77
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\doc_pack-38398360.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:3676 -
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 44402⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:2072 -
C:\Windows\system32\dwwin.exeC:\Windows\system32\dwwin.exe -x -s 44403⤵
- Suspicious behavior: EnumeratesProcesses
PID:2144
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