Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
09/11/2022, 19:33
Behavioral task
behavioral1
Sample
doc_0911.xls
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
doc_0911.xls
Resource
win10v2004-20220812-en
General
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Target
doc_0911.xls
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Size
91KB
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MD5
a134f958b8f28081d5857abc32dab8d3
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SHA1
cc4e5f5f8b9988c175b7c578c2ab225522956101
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SHA256
afe3d78330690e536178b7ccb888360b5ebeaf73223319978ca2c84af0175a51
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SHA512
d1928bdc459144d4fe9155bba6dcdf88787233ac83a1f1e18749526fc1117acdc743bce880877d862d8f43ca4d3cc16346bb1c3a2fc2700e4f687faee77f9c46
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SSDEEP
1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEbCXuZH4gb4CEn9J4ZwEM:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgJ
Malware Config
Extracted
http://www.muyehuayi.com/cmp/8asA99KPsyA/v6lUsWbLen/
http://concivilpa.com.py/wp-admin/i3CQu9dzDrMW/
https://wijsneusmedia.nl/cgi-bin/kFB/
http://www.angloextrema.com.br/assets/oEt1yYckHKlnNIq/
Signatures
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Process spawned unexpected child process 4 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 2236 4244 regsvr32.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 116 4244 regsvr32.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4272 4244 regsvr32.exe 80 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3668 4244 regsvr32.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 -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4244 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 13 IoCs
pid Process 4244 EXCEL.EXE 4244 EXCEL.EXE 4244 EXCEL.EXE 4244 EXCEL.EXE 4244 EXCEL.EXE 4244 EXCEL.EXE 4244 EXCEL.EXE 4244 EXCEL.EXE 4244 EXCEL.EXE 4244 EXCEL.EXE 4244 EXCEL.EXE 4244 EXCEL.EXE 4244 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4244 wrote to memory of 2236 4244 EXCEL.EXE 84 PID 4244 wrote to memory of 2236 4244 EXCEL.EXE 84 PID 4244 wrote to memory of 116 4244 EXCEL.EXE 85 PID 4244 wrote to memory of 116 4244 EXCEL.EXE 85 PID 4244 wrote to memory of 4272 4244 EXCEL.EXE 86 PID 4244 wrote to memory of 4272 4244 EXCEL.EXE 86 PID 4244 wrote to memory of 3668 4244 EXCEL.EXE 87 PID 4244 wrote to memory of 3668 4244 EXCEL.EXE 87
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\doc_0911.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4244 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx2⤵
- Process spawned unexpected child process
PID:2236
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx2⤵
- Process spawned unexpected child process
PID:116
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4272
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx2⤵
- Process spawned unexpected child process
PID:3668
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