Analysis
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max time kernel
150s -
max time network
144s -
platform
windows10_x64 -
resource
win10-20220414-en -
submitted
07-07-2022 04:08
Behavioral task
behavioral1
Sample
10fa6005847123358153b457bbb0544fdb9336d3ede2f2c122d14199d2413346.xls
Resource
win10-20220414-en
General
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Target
10fa6005847123358153b457bbb0544fdb9336d3ede2f2c122d14199d2413346.xls
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Size
95KB
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MD5
3bd53b9274e0465ae5f15efbf34cd96c
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SHA1
03198f860e12a66454036b4c0719ad1b3e928f55
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SHA256
10fa6005847123358153b457bbb0544fdb9336d3ede2f2c122d14199d2413346
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SHA512
9d94a21230f32e04ad672a19f4adefbba7bebc03e9d66d11c1841409dcf9afe9045044844e1de67f1e007e13494ef4d32c31657cafedb42aa3d6fd2754bd38b2
Malware Config
Extracted
https://edoraseguros.com.br/cgi-bin/jQNq9wlH1GXU/
http://earthmach.co.za/libraries/tWkZh9YrXbTd6IeX/
http://finvest.rs/wp-admin/Hr9nVNTIHgw59S/
http://efverstedt.se/5jjaV/w7fLEHJ20xn0qD/
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.
Processes:
regsvr32.exeregsvr32.exeregsvr32.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 4404 3620 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4556 3620 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4280 3620 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 5064 3620 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 3620 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 3620 EXCEL.EXE 3620 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 3620 EXCEL.EXE 3620 EXCEL.EXE 3620 EXCEL.EXE 3620 EXCEL.EXE 3620 EXCEL.EXE 3620 EXCEL.EXE 3620 EXCEL.EXE 3620 EXCEL.EXE 3620 EXCEL.EXE 3620 EXCEL.EXE 3620 EXCEL.EXE 3620 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 3620 wrote to memory of 4404 3620 EXCEL.EXE regsvr32.exe PID 3620 wrote to memory of 4404 3620 EXCEL.EXE regsvr32.exe PID 3620 wrote to memory of 4556 3620 EXCEL.EXE regsvr32.exe PID 3620 wrote to memory of 4556 3620 EXCEL.EXE regsvr32.exe PID 3620 wrote to memory of 4280 3620 EXCEL.EXE regsvr32.exe PID 3620 wrote to memory of 4280 3620 EXCEL.EXE regsvr32.exe PID 3620 wrote to memory of 5064 3620 EXCEL.EXE regsvr32.exe PID 3620 wrote to memory of 5064 3620 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\10fa6005847123358153b457bbb0544fdb9336d3ede2f2c122d14199d2413346.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
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci1.ocx2⤵
- Process spawned unexpected child process
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci2.ocx2⤵
- Process spawned unexpected child process
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci3.ocx2⤵
- Process spawned unexpected child process
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C:\Windows\System32\regsvr32.exeC:\Windows\System32\regsvr32.exe /S ..\soci4.ocx2⤵
- Process spawned unexpected child process
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/3620-117-0x00007FF8A03B0000-0x00007FF8A03C0000-memory.dmpFilesize
64KB
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memory/3620-118-0x00007FF8A03B0000-0x00007FF8A03C0000-memory.dmpFilesize
64KB
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memory/3620-119-0x00007FF8A03B0000-0x00007FF8A03C0000-memory.dmpFilesize
64KB
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memory/3620-120-0x00007FF8A03B0000-0x00007FF8A03C0000-memory.dmpFilesize
64KB
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memory/3620-129-0x00007FF89CDE0000-0x00007FF89CDF0000-memory.dmpFilesize
64KB
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memory/3620-130-0x00007FF89CDE0000-0x00007FF89CDF0000-memory.dmpFilesize
64KB
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memory/4280-255-0x0000000000000000-mapping.dmp
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memory/4404-253-0x0000000000000000-mapping.dmp
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memory/4556-254-0x0000000000000000-mapping.dmp
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memory/5064-256-0x0000000000000000-mapping.dmp