Analysis
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max time kernel
128s -
max time network
131s -
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, 10:31
Behavioral task
behavioral1
Sample
d951384b5cb5b0c23bd773ed96c6f23367e803a60ff20b7def0dc2403c227caa.xls
Resource
win10-20220812-en
Behavioral task
behavioral2
Sample
d951384b5cb5b0c23bd773ed96c6f23367e803a60ff20b7def0dc2403c227caa.xls
Resource
win10-20220812-en
General
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Target
d951384b5cb5b0c23bd773ed96c6f23367e803a60ff20b7def0dc2403c227caa.xls
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Size
91KB
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MD5
531bd23c4054218923521b54d992a082
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SHA1
9b80be53ff9a1fea58a70ea5f2311a60f45af382
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SHA256
d951384b5cb5b0c23bd773ed96c6f23367e803a60ff20b7def0dc2403c227caa
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SHA512
ceacaf27a48a6d6d6badfc1716176f442cf85a7f77652ccf95131d18fa8fb4dfc9409e293d861018c06cbd229ecdc51e1406c819a45324c42b9390d82756e5ca
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SSDEEP
1536:eKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgqbCXuZH4gb4CEn9J4ZXz3:eKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgm
Malware Config
Extracted
https://www.conceptagency.net/css/b8eaKN/
https://bencevendeghaz.hu/2zjoi/cwfKJOzA/
http://45.32.114.141/xilte/Uqm6Eysf3Hkjwh/
http://ruitaiwz.com/wp-admin/MXlp5IsUKwT1k0DtzT/
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 1828 2648 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4048 2648 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4156 2648 regsvr32.exe 65 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4172 2648 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 2648 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 2648 EXCEL.EXE 2648 EXCEL.EXE 2648 EXCEL.EXE 2648 EXCEL.EXE 2648 EXCEL.EXE 2648 EXCEL.EXE 2648 EXCEL.EXE 2648 EXCEL.EXE 2648 EXCEL.EXE 2648 EXCEL.EXE 2648 EXCEL.EXE 2648 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 2648 wrote to memory of 1828 2648 EXCEL.EXE 68 PID 2648 wrote to memory of 1828 2648 EXCEL.EXE 68 PID 2648 wrote to memory of 4048 2648 EXCEL.EXE 71 PID 2648 wrote to memory of 4048 2648 EXCEL.EXE 71 PID 2648 wrote to memory of 4156 2648 EXCEL.EXE 72 PID 2648 wrote to memory of 4156 2648 EXCEL.EXE 72 PID 2648 wrote to memory of 4172 2648 EXCEL.EXE 73 PID 2648 wrote to memory of 4172 2648 EXCEL.EXE 73
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\d951384b5cb5b0c23bd773ed96c6f23367e803a60ff20b7def0dc2403c227caa.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2648 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx2⤵
- Process spawned unexpected child process
PID:1828
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4048
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4156
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx2⤵
- Process spawned unexpected child process
PID:4172
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