Analysis
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max time kernel
128s -
max time network
143s -
platform
windows10_x64 -
resource
win10-20220414-en -
submitted
07-07-2022 04:04
Behavioral task
behavioral1
Sample
8215fdd4e0d11a1246ce225c58edeb6bd61c087755d937a039c196914fd4d304.xls
Resource
win10-20220414-en
General
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Target
8215fdd4e0d11a1246ce225c58edeb6bd61c087755d937a039c196914fd4d304.xls
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Size
95KB
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MD5
953d3007f13082c669f37fd8fd642b4c
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SHA1
eb161037aaa5c25639f08e642597e8023821efc7
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SHA256
8215fdd4e0d11a1246ce225c58edeb6bd61c087755d937a039c196914fd4d304
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SHA512
e0241735a034f438899d0d0e856d2de31932d46780261253291cdbcc508ec454f68b89ba4720f42712175c2e65a63acfd59eb7036bd7d599fc31c14be9974123
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 3444 1296 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2764 1296 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 2260 1296 regsvr32.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 3856 1296 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 1296 EXCEL.EXE -
Suspicious use of FindShellTrayWindow 2 IoCs
Processes:
EXCEL.EXEpid process 1296 EXCEL.EXE 1296 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 12 IoCs
Processes:
EXCEL.EXEpid process 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE 1296 EXCEL.EXE -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
EXCEL.EXEdescription pid process target process PID 1296 wrote to memory of 3444 1296 EXCEL.EXE regsvr32.exe PID 1296 wrote to memory of 3444 1296 EXCEL.EXE regsvr32.exe PID 1296 wrote to memory of 2764 1296 EXCEL.EXE regsvr32.exe PID 1296 wrote to memory of 2764 1296 EXCEL.EXE regsvr32.exe PID 1296 wrote to memory of 2260 1296 EXCEL.EXE regsvr32.exe PID 1296 wrote to memory of 2260 1296 EXCEL.EXE regsvr32.exe PID 1296 wrote to memory of 3856 1296 EXCEL.EXE regsvr32.exe PID 1296 wrote to memory of 3856 1296 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\8215fdd4e0d11a1246ce225c58edeb6bd61c087755d937a039c196914fd4d304.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
Loading Replay Monitor...
Downloads
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memory/1296-294-0x00007FFAC7680000-0x00007FFAC7690000-memory.dmpFilesize
64KB
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memory/1296-117-0x00007FFAC7680000-0x00007FFAC7690000-memory.dmpFilesize
64KB
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memory/1296-118-0x00007FFAC7680000-0x00007FFAC7690000-memory.dmpFilesize
64KB
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memory/1296-119-0x00007FFAC7680000-0x00007FFAC7690000-memory.dmpFilesize
64KB
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memory/1296-128-0x00007FFAC4750000-0x00007FFAC4760000-memory.dmpFilesize
64KB
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memory/1296-129-0x00007FFAC4750000-0x00007FFAC4760000-memory.dmpFilesize
64KB
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memory/1296-116-0x00007FFAC7680000-0x00007FFAC7690000-memory.dmpFilesize
64KB
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memory/1296-295-0x00007FFAC7680000-0x00007FFAC7690000-memory.dmpFilesize
64KB
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memory/1296-292-0x00007FFAC7680000-0x00007FFAC7690000-memory.dmpFilesize
64KB
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memory/1296-293-0x00007FFAC7680000-0x00007FFAC7690000-memory.dmpFilesize
64KB
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memory/2260-254-0x0000000000000000-mapping.dmp
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memory/2764-253-0x0000000000000000-mapping.dmp
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memory/3444-252-0x0000000000000000-mapping.dmp
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memory/3856-255-0x0000000000000000-mapping.dmp