Analysis
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max time kernel
144s -
max time network
147s -
platform
windows10-1703_x64 -
resource
win10-20220812-en -
resource tags
arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system -
submitted
10/11/2022, 10:26
Behavioral task
behavioral1
Sample
3e539e156939607cb720f077b0987f49dff7b5a81133fd58a42e26c6bd29dbc1.xls
Resource
win10-20220812-en
General
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Target
3e539e156939607cb720f077b0987f49dff7b5a81133fd58a42e26c6bd29dbc1.xls
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Size
91KB
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MD5
8dd28229206c0a22ab38746134886cf5
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SHA1
075ce4f929f4fcad51bc76adc5d13b429c5c1f63
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SHA256
3e539e156939607cb720f077b0987f49dff7b5a81133fd58a42e26c6bd29dbc1
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SHA512
19d908332b7cab5c228bad237de55542a2f70a4261988bc09971a047c07cbaef46903cd0067520ee3ead9dfe725d915cbcee644b0311df3f0c15050df2fa8555
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SSDEEP
1536:wKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgGbCXuZH4gb4CEn9J4Z/Cs9o2:wKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgu
Malware Config
Extracted
https://bosny.com/aspnet_client/R50QIOGjmvVlr/
http://navylin.com/autopoisonous/4fZQW/
http://asrani.garudaputih.com/nutabalong/bJYqoUIr99qNfoPDx/
http://db.rikaz.tech/lCx76IlkrBtEsqNFA7/zPYJzpOnzstNOiRHob/
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 4516 4628 regsvr32.exe 66 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3916 4628 regsvr32.exe 66 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4424 4628 regsvr32.exe 66 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3680 4628 regsvr32.exe 66 -
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 4628 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 4628 EXCEL.EXE 4628 EXCEL.EXE 4628 EXCEL.EXE 4628 EXCEL.EXE 4628 EXCEL.EXE 4628 EXCEL.EXE 4628 EXCEL.EXE 4628 EXCEL.EXE 4628 EXCEL.EXE 4628 EXCEL.EXE 4628 EXCEL.EXE 4628 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4628 wrote to memory of 4516 4628 EXCEL.EXE 69 PID 4628 wrote to memory of 4516 4628 EXCEL.EXE 69 PID 4628 wrote to memory of 3916 4628 EXCEL.EXE 70 PID 4628 wrote to memory of 3916 4628 EXCEL.EXE 70 PID 4628 wrote to memory of 4424 4628 EXCEL.EXE 71 PID 4628 wrote to memory of 4424 4628 EXCEL.EXE 71 PID 4628 wrote to memory of 3680 4628 EXCEL.EXE 72 PID 4628 wrote to memory of 3680 4628 EXCEL.EXE 72
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\3e539e156939607cb720f077b0987f49dff7b5a81133fd58a42e26c6bd29dbc1.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4628 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4516
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx2⤵
- Process spawned unexpected child process
PID:3916
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4424
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx2⤵
- Process spawned unexpected child process
PID:3680
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