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Analysis
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max time kernel
133s -
max time network
137s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
11/11/2024, 21:23
Behavioral task
behavioral1
Sample
81edbbd0fb9f019847a29b1615cb9a0b14cffe19f0758ef80d3342218a2ef0dc.xls
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
81edbbd0fb9f019847a29b1615cb9a0b14cffe19f0758ef80d3342218a2ef0dc.xls
Resource
win10v2004-20241007-en
General
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Target
81edbbd0fb9f019847a29b1615cb9a0b14cffe19f0758ef80d3342218a2ef0dc.xls
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Size
70KB
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MD5
b6f9d29a24d114095cb92c4fb4d2337b
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SHA1
f36edd212c76f6be18b6639525ad36b368b86306
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SHA256
81edbbd0fb9f019847a29b1615cb9a0b14cffe19f0758ef80d3342218a2ef0dc
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SHA512
4b4377132c18f644e14a63581c2ccf0f2d506fcd7865fdb65fba83d35f8a54039077afa462a8cfb60b08fdc0dbeac7e8e578813e7ed545d0283b5de584043b55
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SSDEEP
1536:OhKpb8rGYrMPe3q7Q0XV5xtezE8vG8UM+e+hDcnTLiQrRTZws8Egk:uKpb8rGYrMPe3q7Q0XV5xtezE8vG8UMx
Malware Config
Extracted
https://strachanclark.com/images/3gc4qCpSFYbBMDEC/
https://synapse-archive.com/images/bKaMr/
https://sumuvesa.com/wp-includes/rgL/
Signatures
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Process spawned unexpected child process 3 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 1788 956 regsvr32.exe 82 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 892 956 regsvr32.exe 82 Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1988 956 regsvr32.exe 82 -
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 956 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
pid Process 956 EXCEL.EXE 956 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
pid Process 956 EXCEL.EXE 956 EXCEL.EXE 956 EXCEL.EXE 956 EXCEL.EXE 956 EXCEL.EXE 956 EXCEL.EXE 956 EXCEL.EXE 956 EXCEL.EXE 956 EXCEL.EXE 956 EXCEL.EXE 956 EXCEL.EXE 956 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 956 wrote to memory of 1788 956 EXCEL.EXE 88 PID 956 wrote to memory of 1788 956 EXCEL.EXE 88 PID 956 wrote to memory of 892 956 EXCEL.EXE 89 PID 956 wrote to memory of 892 956 EXCEL.EXE 89 PID 956 wrote to memory of 1988 956 EXCEL.EXE 96 PID 956 wrote to memory of 1988 956 EXCEL.EXE 96
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\81edbbd0fb9f019847a29b1615cb9a0b14cffe19f0758ef80d3342218a2ef0dc.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:956 -
C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\cusoa1.ocx2⤵
- Process spawned unexpected child process
PID:1788
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\cusoa2.ocx2⤵
- Process spawned unexpected child process
PID:892
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\cusoa3.ocx2⤵
- Process spawned unexpected child process
PID:1988
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms
Filesize1KB
MD5691d18e31d168800948dd8feab2a1662
SHA162517ebd7e0539f5f31e18f52caa212634acd6cf
SHA256dfad55ebf4d2c32a3392373d47a361ceb6dceea68cb4290fc1134d8a838fc5b1
SHA512c2cbb5cc4d899811cb837d452b4451dcf9b1f86a7676a0529f8d81c1a876f1ee42afdaa26e9bb8b9d9bb040a2ba4c18085281252a59441966a9e178bf0cbc894