Analysis
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max time kernel
148s -
max time network
148s -
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, 11:01
Behavioral task
behavioral1
Sample
4a09548ed23227d26027e97ed1d9ef6c66f388327072bc9f298853e238d14d25.xls
Resource
win10-20220901-en
Behavioral task
behavioral2
Sample
4a09548ed23227d26027e97ed1d9ef6c66f388327072bc9f298853e238d14d25.xls
Resource
win10-20220812-en
General
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Target
4a09548ed23227d26027e97ed1d9ef6c66f388327072bc9f298853e238d14d25.xls
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Size
91KB
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MD5
3e9e9a800e32d20dbe5d482173cded1d
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SHA1
b6fc99fb192fb0a649bb1f910bca988f2f2e324b
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SHA256
4a09548ed23227d26027e97ed1d9ef6c66f388327072bc9f298853e238d14d25
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SHA512
8e002becd2f6da727ffb6af791b5281ef1a18ef389054c9b0e5cb79275550217497dd93f11f89de47ef6c896862450999cf590735e2f5b4affb7db7332b57cfc
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SSDEEP
1536:wKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgGbCXuZH4gb4CEn9J4Z/Cs9o2:wKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgG
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 4652 4828 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4704 4828 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4496 4828 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4396 4828 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 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 EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 4828 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 4828 EXCEL.EXE 4828 EXCEL.EXE 4828 EXCEL.EXE 4828 EXCEL.EXE 4828 EXCEL.EXE 4828 EXCEL.EXE 4828 EXCEL.EXE 4828 EXCEL.EXE 4828 EXCEL.EXE 4828 EXCEL.EXE 4828 EXCEL.EXE 4828 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4828 wrote to memory of 4652 4828 EXCEL.EXE 68 PID 4828 wrote to memory of 4652 4828 EXCEL.EXE 68 PID 4828 wrote to memory of 4704 4828 EXCEL.EXE 69 PID 4828 wrote to memory of 4704 4828 EXCEL.EXE 69 PID 4828 wrote to memory of 4496 4828 EXCEL.EXE 70 PID 4828 wrote to memory of 4496 4828 EXCEL.EXE 70 PID 4828 wrote to memory of 4396 4828 EXCEL.EXE 71 PID 4828 wrote to memory of 4396 4828 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\4a09548ed23227d26027e97ed1d9ef6c66f388327072bc9f298853e238d14d25.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4828 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4652
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4704
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4496
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4396
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