Analysis
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max time kernel
148s -
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
09/11/2022, 19:15
Behavioral task
behavioral1
Sample
fb816a1b9ff22c57c03219df6113bbb91ef15734513a0b9722165280a990a3e7.xls
Resource
win10-20220901-en
Behavioral task
behavioral2
Sample
fb816a1b9ff22c57c03219df6113bbb91ef15734513a0b9722165280a990a3e7.xls
Resource
win10-20220812-en
General
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Target
fb816a1b9ff22c57c03219df6113bbb91ef15734513a0b9722165280a990a3e7.xls
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Size
91KB
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MD5
6d388bfa6a9b5860d91065db186f6d55
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SHA1
7b371e3e070d46ce92d18109e7d6317411497e01
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SHA256
fb816a1b9ff22c57c03219df6113bbb91ef15734513a0b9722165280a990a3e7
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SHA512
a6e775d3cca84547f01ad346346ea7144bf846e595d28709d531c915086bc7b3bea4038ee40f1f8740cef5e48704c7952cd6ca3a410e44dbb3181c301859fc4b
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SSDEEP
1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEbCXuZH4gb4CEn9J4ZMEM:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgF
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 5092 2476 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3600 2476 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4512 2476 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3964 2476 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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz 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 2476 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 2476 EXCEL.EXE 2476 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE 2476 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2476 wrote to memory of 5092 2476 EXCEL.EXE 68 PID 2476 wrote to memory of 5092 2476 EXCEL.EXE 68 PID 2476 wrote to memory of 3600 2476 EXCEL.EXE 69 PID 2476 wrote to memory of 3600 2476 EXCEL.EXE 69 PID 2476 wrote to memory of 4512 2476 EXCEL.EXE 70 PID 2476 wrote to memory of 4512 2476 EXCEL.EXE 70 PID 2476 wrote to memory of 3964 2476 EXCEL.EXE 71 PID 2476 wrote to memory of 3964 2476 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\fb816a1b9ff22c57c03219df6113bbb91ef15734513a0b9722165280a990a3e7.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2476 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx2⤵
- Process spawned unexpected child process
PID:5092
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx2⤵
- Process spawned unexpected child process
PID:3600
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4512
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx2⤵
- Process spawned unexpected child process
PID:3964
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