Analysis
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max time kernel
147s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
27-02-2024 06:54
Static task
static1
Behavioral task
behavioral1
Sample
a8832bcf05291992cb718e275893c2c3.xlsm
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
a8832bcf05291992cb718e275893c2c3.xlsm
Resource
win10v2004-20240226-en
General
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Target
a8832bcf05291992cb718e275893c2c3.xlsm
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Size
6KB
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MD5
a8832bcf05291992cb718e275893c2c3
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SHA1
437aba5e83d512abe90b42fc6c5939e5f03e826d
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SHA256
8a4ec0aa92490c329f8f1fb29afbcffed684348329cdf704af21311c2a020499
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SHA512
b5a4991c400aeda5c3d2b6cd5132dc450502e22ea2d1cc6ad4d4098366688a77bee79adc8427d18c3941e97d5999d160ccda10d78e397ded7c3628af6791be10
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SSDEEP
192:NDSxuSd1aEOmmfRy8UhHFBFYucb98yBUfU:NKu4w01FYlb98yBAU
Malware Config
Extracted
http://46.17.98.187
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.
Processes:
msiexec.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4940 4408 msiexec.exe EXCEL.EXE -
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.
Processes:
DW20.EXEdescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3208 4408 DW20.EXE EXCEL.EXE -
Checks processor information in registry 2 TTPs 6 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
dwwin.exeEXCEL.EXEdescription ioc process 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 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 -
Enumerates system info in registry 2 TTPs 5 IoCs
Processes:
dwwin.exeEXCEL.EXEdescription ioc process 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 Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS dwwin.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 4408 EXCEL.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
EXCEL.EXEpid process 4408 EXCEL.EXE 4408 EXCEL.EXE 4408 EXCEL.EXE 4408 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
EXCEL.EXEpid process 4408 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
Processes:
EXCEL.EXEpid process 4408 EXCEL.EXE 4408 EXCEL.EXE 4408 EXCEL.EXE 4408 EXCEL.EXE 4408 EXCEL.EXE 4408 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
EXCEL.EXEDW20.EXEdescription pid process target process PID 4408 wrote to memory of 4940 4408 EXCEL.EXE msiexec.exe PID 4408 wrote to memory of 4940 4408 EXCEL.EXE msiexec.exe PID 4408 wrote to memory of 3208 4408 EXCEL.EXE DW20.EXE PID 4408 wrote to memory of 3208 4408 EXCEL.EXE DW20.EXE PID 3208 wrote to memory of 4784 3208 DW20.EXE dwwin.exe PID 3208 wrote to memory of 4784 3208 DW20.EXE dwwin.exe
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\a8832bcf05291992cb718e275893c2c3.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:4408 -
C:\Windows\SYSTEM32\msiexec.exemsiexec.exe2⤵
- Process spawned unexpected child process
PID:4940 -
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 40842⤵
- Process spawned suspicious child process
- Suspicious use of WriteProcessMemory
PID:3208 -
C:\Windows\system32\dwwin.exeC:\Windows\system32\dwwin.exe -x -s 40843⤵
- Checks processor information in registry
- Enumerates system info in registry
PID:4784