Analysis
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max time kernel
149s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
28-02-2024 10:29
Behavioral task
behavioral1
Sample
aba9f1ac6372aa43ba4fcf0bbfb805d7.xlsm
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
aba9f1ac6372aa43ba4fcf0bbfb805d7.xlsm
Resource
win10v2004-20240226-en
General
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Target
aba9f1ac6372aa43ba4fcf0bbfb805d7.xlsm
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Size
85KB
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MD5
aba9f1ac6372aa43ba4fcf0bbfb805d7
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SHA1
a3fe19f739d576f30bad23431025d57ade19071c
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SHA256
857f303ab9359c6f06e08842888c5ce19fc9d2b51b0ebe3dfb5e4d127208088c
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SHA512
4851dca9f371d7f3673fe64392acc9d07864706266fc884492d357a1235fbc4e21d945299c98077ebebc62359566a9e8bb8dd05e0c3f842690ae684b30791117
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SSDEEP
1536:2DhVxmyaa15pRxrDK341rDmf5TTlMVGoIahaDHTU6hryF70liWWGH0AeW/:mVIyaa1/rDSOmf92sTU2yF70liWW20k
Malware Config
Extracted
http://162.248.227.39/first.php
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.
Processes:
regsvr32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3004 5004 regsvr32.exe EXCEL.EXE -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
EXCEL.EXEdescription 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
Processes:
EXCEL.EXEdescription 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
Processes:
EXCEL.EXEpid process 5004 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 5004 EXCEL.EXE 5004 EXCEL.EXE 5004 EXCEL.EXE 5004 EXCEL.EXE 5004 EXCEL.EXE 5004 EXCEL.EXE 5004 EXCEL.EXE 5004 EXCEL.EXE 5004 EXCEL.EXE 5004 EXCEL.EXE 5004 EXCEL.EXE 5004 EXCEL.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 5004 wrote to memory of 3004 5004 EXCEL.EXE regsvr32.exe PID 5004 wrote to memory of 3004 5004 EXCEL.EXE regsvr32.exe
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\aba9f1ac6372aa43ba4fcf0bbfb805d7.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5004 -
C:\Windows\SYSTEM32\regsvr32.exeregsvr32 -silent ..\yeieowur.dll2⤵
- Process spawned unexpected child process
PID:3004