Analysis
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max time kernel
149s -
max time network
157s -
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 11:25
Behavioral task
behavioral1
Sample
abc586ec16ff910d3d034f0488736823.xlsm
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
abc586ec16ff910d3d034f0488736823.xlsm
Resource
win10v2004-20240226-en
General
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Target
abc586ec16ff910d3d034f0488736823.xlsm
-
Size
158KB
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MD5
abc586ec16ff910d3d034f0488736823
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SHA1
46ea3e04f2c7895d331d19e752fc67bdc8438b46
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SHA256
3d28e521ca329b68dc47d9d1d620c0e44fd5b50718cdad8f2c23008997668aed
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SHA512
c6ffafd02fd6bd2dd3483fb7d23e9096d108f02a0bc27b95a92d862154630d12e787b90d98dacaf240163cf38dca37300dc845c51df51d2984886c9bc0c14ef5
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SSDEEP
3072:LHlTkdm3bGeAxidxVymd1xXPMU9VlUBWA6CFvA7bRCxAVIKKNB:LFTkeGKdxVyWxfMU3liWA6FsYq
Malware Config
Extracted
https://biopaten.no/xeBP8Oj5/gg.html
https://beartoothkawasaki.com/QJT19jhtwHt/gg.html
Signatures
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Process spawned unexpected child process 2 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
regsvr32.exeregsvr32.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 548 2404 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2660 2404 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 2404 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 2404 EXCEL.EXE 2404 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 14 IoCs
Processes:
EXCEL.EXEpid process 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE 2404 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 2404 wrote to memory of 2288 2404 EXCEL.EXE splwow64.exe PID 2404 wrote to memory of 2288 2404 EXCEL.EXE splwow64.exe PID 2404 wrote to memory of 548 2404 EXCEL.EXE regsvr32.exe PID 2404 wrote to memory of 548 2404 EXCEL.EXE regsvr32.exe PID 2404 wrote to memory of 2660 2404 EXCEL.EXE regsvr32.exe PID 2404 wrote to memory of 2660 2404 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\abc586ec16ff910d3d034f0488736823.xlsm"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:2404 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:2288
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C:\Windows\SYSTEM32\regsvr32.exeregsvr32 ..\cexyz1.dll2⤵
- Process spawned unexpected child process
PID:548 -
C:\Windows\SYSTEM32\regsvr32.exeregsvr32 ..\cexyz2.dll2⤵
- Process spawned unexpected child process
PID:2660
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵PID:1768