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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
14/02/2023, 19:31
Behavioral task
behavioral1
Sample
c2e5f1d7d6f695ce05e13a78e371771d.xls
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
c2e5f1d7d6f695ce05e13a78e371771d.xls
Resource
win10v2004-20220812-en
General
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Target
c2e5f1d7d6f695ce05e13a78e371771d.xls
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Size
166KB
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MD5
c2e5f1d7d6f695ce05e13a78e371771d
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SHA1
00ef694207dd24bcec1b8d851b936f065df0972a
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SHA256
41d16f38f7fcd1569f05c1b17dd869168ece6a626b65bbd2df1cd9a08b4fdb25
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SHA512
2fb3040123ffea0b4ec3a9a37b37559bab89ca823b71727f4815eef2f203b68ba8aa279795f2f611861c23a29e202a0fc0007bd21433a683e1927c7078a9439b
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SSDEEP
3072:6Ok3hOdsylKlgryzc4bNhZFGzE+cL2knL/Qfe3J2jcc0lbxOGiJtXwmyypRyT:6Ok3hOdsylKlgryzc4bNhZF+E+W2knLt
Malware Config
Signatures
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Process spawned unexpected child process 3 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 4956 4920 cmd.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3044 4920 cmd.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4216 4920 cmd.exe 80 -
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 -
NTFS ADS 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Local\Temp\BBE65E00\:Zone.Identifier:$DATA EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4920 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
pid Process 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE 4920 EXCEL.EXE -
Suspicious use of WriteProcessMemory 10 IoCs
description pid Process procid_target PID 4920 wrote to memory of 1432 4920 EXCEL.EXE 84 PID 4920 wrote to memory of 1432 4920 EXCEL.EXE 84 PID 4920 wrote to memory of 4956 4920 EXCEL.EXE 86 PID 4920 wrote to memory of 4956 4920 EXCEL.EXE 86 PID 4920 wrote to memory of 4216 4920 EXCEL.EXE 89 PID 4920 wrote to memory of 4216 4920 EXCEL.EXE 89 PID 4920 wrote to memory of 3044 4920 EXCEL.EXE 88 PID 4920 wrote to memory of 3044 4920 EXCEL.EXE 88 PID 4956 wrote to memory of 3772 4956 cmd.exe 92 PID 4956 wrote to memory of 3772 4956 cmd.exe 92 -
Views/modifies file attributes 1 TTPs 1 IoCs
pid Process 3772 attrib.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\c2e5f1d7d6f695ce05e13a78e371771d.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4920 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:1432
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:4956 -
C:\Windows\system32\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
PID:3772
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
PID:3044
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
PID:4216
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵PID:116