Analysis
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max time kernel
162s -
max time network
177s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
22-12-2023 16:54
Static task
static1
Behavioral task
behavioral1
Sample
f97a55d7b930da66d8a2ff8aff1aabc0.xlsm
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
f97a55d7b930da66d8a2ff8aff1aabc0.xlsm
Resource
win10v2004-20231215-en
General
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Target
f97a55d7b930da66d8a2ff8aff1aabc0.xlsm
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Size
6KB
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MD5
f97a55d7b930da66d8a2ff8aff1aabc0
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SHA1
f906448331b2a3e95c61c115b5eb03c374b2b9f6
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SHA256
d5b1d2c227b68c58b8277c4f9045f67dc9241b7a6e28adf2103e3ee96666ae70
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SHA512
a351e0924c71bf917ed9ba18a3bb24b259f207a847bf16b2dcadd31da090eb1e8326aceb7018492c9eae8a8ff8438e37d0f59832d034396fc6abec6682495571
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SSDEEP
192:NDSauSgbrA2OmmfRb8UhHFBFYudb98yg6+A:NduVM2wp1FYgb98ygg
Malware Config
Extracted
http://46.17.98.187/index.php
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 4852 4100 DW20.EXE 1 -
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 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 Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS dwwin.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU dwwin.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4100 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4100 EXCEL.EXE 4100 EXCEL.EXE 4100 EXCEL.EXE 4100 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4100 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 4100 EXCEL.EXE 4100 EXCEL.EXE 4100 EXCEL.EXE 4100 EXCEL.EXE 4100 EXCEL.EXE 4100 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 4100 wrote to memory of 4852 4100 EXCEL.EXE 94 PID 4100 wrote to memory of 4852 4100 EXCEL.EXE 94 PID 4852 wrote to memory of 2692 4852 DW20.EXE 95 PID 4852 wrote to memory of 2692 4852 DW20.EXE 95
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\f97a55d7b930da66d8a2ff8aff1aabc0.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4100 -
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 42282⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:4852 -
C:\Windows\system32\dwwin.exeC:\Windows\system32\dwwin.exe -x -s 42283⤵
- Checks processor information in registry
- Enumerates system info in registry
PID:2692
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