Analysis
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max time kernel
144s -
max time network
147s -
platform
windows10-1703_x64 -
resource
win10-20220901-en -
resource tags
arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system -
submitted
10/11/2022, 10:39
Behavioral task
behavioral1
Sample
4a7f651f6f9f9eff4a8b87759ebdddaa1a44864529ed091c2abc22f0abbdb27e.xls
Resource
win10-20220901-en
Behavioral task
behavioral2
Sample
4a7f651f6f9f9eff4a8b87759ebdddaa1a44864529ed091c2abc22f0abbdb27e.xls
Resource
win10-20220812-en
General
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Target
4a7f651f6f9f9eff4a8b87759ebdddaa1a44864529ed091c2abc22f0abbdb27e.xls
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Size
91KB
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MD5
399a939e6df80529463a5f01d5a833c0
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SHA1
3f56a9e691c3069c71d7180d4fdc0f94652ba2c2
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SHA256
4a7f651f6f9f9eff4a8b87759ebdddaa1a44864529ed091c2abc22f0abbdb27e
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SHA512
a403222612e32ededa1d0f0d33e5f0b3f5b5a359e78cf804facf7469a2004833fcef9471502669c410341ff7038842168d4f187d819634aa9e113d1e04170a1f
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SSDEEP
1536:wKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgGbCXuZH4gb4CEn9J4Z/is9o2:wKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgm
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 4568 384 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4472 384 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3780 384 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4196 384 regsvr32.exe 65 -
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 384 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 384 EXCEL.EXE 384 EXCEL.EXE 384 EXCEL.EXE 384 EXCEL.EXE 384 EXCEL.EXE 384 EXCEL.EXE 384 EXCEL.EXE 384 EXCEL.EXE 384 EXCEL.EXE 384 EXCEL.EXE 384 EXCEL.EXE 384 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 384 wrote to memory of 4568 384 EXCEL.EXE 68 PID 384 wrote to memory of 4568 384 EXCEL.EXE 68 PID 384 wrote to memory of 4472 384 EXCEL.EXE 69 PID 384 wrote to memory of 4472 384 EXCEL.EXE 69 PID 384 wrote to memory of 3780 384 EXCEL.EXE 70 PID 384 wrote to memory of 3780 384 EXCEL.EXE 70 PID 384 wrote to memory of 4196 384 EXCEL.EXE 71 PID 384 wrote to memory of 4196 384 EXCEL.EXE 71
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\4a7f651f6f9f9eff4a8b87759ebdddaa1a44864529ed091c2abc22f0abbdb27e.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:384 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4568
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4472
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx2⤵
- Process spawned unexpected child process
PID:3780
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4196
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