Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
05-03-2024 22:08
Behavioral task
behavioral1
Sample
b5c6efb7aee82fcc0d2e60b31e339d14.xls
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
b5c6efb7aee82fcc0d2e60b31e339d14.xls
Resource
win10v2004-20240226-en
General
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Target
b5c6efb7aee82fcc0d2e60b31e339d14.xls
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Size
36KB
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MD5
b5c6efb7aee82fcc0d2e60b31e339d14
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SHA1
ff3491f209c1a2eee5f3eced2c72adfa94015830
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SHA256
2eca87606545ad7477f97570095549ce010803a56301708fe424edc2f405eb13
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SHA512
973b7163f21374b3d76a74a78260e2bb1ebd32318533f246d567e331122ddd070b04e2d9256ba166d4a4e2ff17f268c886af3ca598f955ff46a730f7ba84017d
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SSDEEP
768:0PqNk3hbdlylKsgqopeJBWhZFGkE+cL2NdAJbOQlgDMlNdZ:wok3hbdlylKsgqopeJBWhZFGkE+cL2NE
Malware Config
Signatures
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Process spawned unexpected child process 1 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 4784 3896 explorer.exe 87 -
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 -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000_Classes\Local Settings explorer.exe -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 3896 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3896 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 6 IoCs
pid Process 3896 EXCEL.EXE 3896 EXCEL.EXE 3896 EXCEL.EXE 3896 EXCEL.EXE 3896 EXCEL.EXE 3896 EXCEL.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3896 wrote to memory of 4784 3896 EXCEL.EXE 92 PID 3896 wrote to memory of 4784 3896 EXCEL.EXE 92 PID 2980 wrote to memory of 464 2980 explorer.exe 95 PID 2980 wrote to memory of 464 2980 explorer.exe 95
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\b5c6efb7aee82fcc0d2e60b31e339d14.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:3896 -
C:\Windows\explorer.exeexplorer.exe C:\Users\Public\Documents\p1C.vbs2⤵
- Process spawned unexpected child process
PID:4784
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C:\Windows\explorer.exeC:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2980 -
C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Public\Documents\p1C.vbs"2⤵PID:464
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
566B
MD580aea70135ff73751c7f0f91d165a3f6
SHA1ec08f6a32bec3723ff21ec569c30be1005d8afe9
SHA25693f5e5b09806ddfa9557c5cd3fa877f73d7a9e6771101aca48314daed2c4873f
SHA512f659fa279076073ceabb73b30580a4668add08f0a1939cbd216bc779be9c1c7b32b20d3db1211a61f24ab71b997b3f38812e9ce2e571510fab84a85457072445