Analysis
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max time kernel
149s -
max time network
148s -
platform
windows10_x64 -
resource
win10-20220414-en -
submitted
07-07-2022 03:41
Behavioral task
behavioral1
Sample
e42c64f1fddaa9ada645d7cd059a110e56e71c0154c0cae29eca77d05270cd60.xls
Resource
win10-20220414-en
Behavioral task
behavioral2
Sample
e42c64f1fddaa9ada645d7cd059a110e56e71c0154c0cae29eca77d05270cd60.xls
Resource
win10-20220414-en
General
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Target
e42c64f1fddaa9ada645d7cd059a110e56e71c0154c0cae29eca77d05270cd60.xls
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Size
95KB
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MD5
a8d51022eda35bb54cfdbe14025b691f
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SHA1
28568f46f8b42cd4c944f985f477ad1864facdbe
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SHA256
e42c64f1fddaa9ada645d7cd059a110e56e71c0154c0cae29eca77d05270cd60
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SHA512
e7d07a269dd5a11df1760bfb837ee314b1be4a299fc4bd5f2baed06f60e45fb55ea432d042d5fdae48ba6269ae7edb583d4e3e94639a5b285179ccdd659e1e39
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 4488 2156 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4368 2156 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1876 2156 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 5052 2156 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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 2156 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 2156 EXCEL.EXE 2156 EXCEL.EXE 2156 EXCEL.EXE 2156 EXCEL.EXE 2156 EXCEL.EXE 2156 EXCEL.EXE 2156 EXCEL.EXE 2156 EXCEL.EXE 2156 EXCEL.EXE 2156 EXCEL.EXE 2156 EXCEL.EXE 2156 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 2156 wrote to memory of 4488 2156 EXCEL.EXE regsvr32.exe PID 2156 wrote to memory of 4488 2156 EXCEL.EXE regsvr32.exe PID 2156 wrote to memory of 4368 2156 EXCEL.EXE regsvr32.exe PID 2156 wrote to memory of 4368 2156 EXCEL.EXE regsvr32.exe PID 2156 wrote to memory of 1876 2156 EXCEL.EXE regsvr32.exe PID 2156 wrote to memory of 1876 2156 EXCEL.EXE regsvr32.exe PID 2156 wrote to memory of 5052 2156 EXCEL.EXE regsvr32.exe PID 2156 wrote to memory of 5052 2156 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\e42c64f1fddaa9ada645d7cd059a110e56e71c0154c0cae29eca77d05270cd60.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- 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/1876-280-0x0000000000000000-mapping.dmp
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memory/2156-114-0x00007FFE528C0000-0x00007FFE528D0000-memory.dmpFilesize
64KB
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memory/2156-115-0x00007FFE528C0000-0x00007FFE528D0000-memory.dmpFilesize
64KB
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memory/2156-116-0x00007FFE528C0000-0x00007FFE528D0000-memory.dmpFilesize
64KB
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memory/2156-117-0x00007FFE528C0000-0x00007FFE528D0000-memory.dmpFilesize
64KB
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memory/2156-126-0x00007FFE4EFE0000-0x00007FFE4EFF0000-memory.dmpFilesize
64KB
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memory/2156-127-0x00007FFE4EFE0000-0x00007FFE4EFF0000-memory.dmpFilesize
64KB
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memory/4368-279-0x0000000000000000-mapping.dmp
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memory/4488-278-0x0000000000000000-mapping.dmp
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memory/5052-281-0x0000000000000000-mapping.dmp