Analysis
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max time kernel
159s -
max time network
173s -
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 16:26
Static task
static1
Behavioral task
behavioral1
Sample
ef42708639f329d8fad3cfdfcb9dc5f2.xlsm
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
ef42708639f329d8fad3cfdfcb9dc5f2.xlsm
Resource
win10v2004-20231215-en
General
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Target
ef42708639f329d8fad3cfdfcb9dc5f2.xlsm
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Size
6KB
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MD5
ef42708639f329d8fad3cfdfcb9dc5f2
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SHA1
09cfc2b6881cfa6273f7431a2f21de607ec52107
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SHA256
fe6f493d8bb46f6eb9be77e60020e4d57ebfe88e754911da8399efe79a95e71e
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SHA512
33cd5b994218e316605f18d4ba6771b99935605d428766b93813dc2b62d78628dd408bfb66c140baa9e0452851492e57082add886ed7c8cec349dafb9e78d8f3
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SSDEEP
192:NDSFuS3brA2OmmfR68UhHFBFYukb98y0r+d:NmuIM2wQ1FY9b98y02
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 4728 2528 DW20.EXE 34 -
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 2528 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2528 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE 2528 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2528 wrote to memory of 4728 2528 EXCEL.EXE 93 PID 2528 wrote to memory of 4728 2528 EXCEL.EXE 93 PID 4728 wrote to memory of 4336 4728 DW20.EXE 94 PID 4728 wrote to memory of 4336 4728 DW20.EXE 94
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\ef42708639f329d8fad3cfdfcb9dc5f2.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:2528 -
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 40882⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:4728 -
C:\Windows\system32\dwwin.exeC:\Windows\system32\dwwin.exe -x -s 40883⤵
- Checks processor information in registry
- Enumerates system info in registry
PID:4336
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