Analysis
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max time kernel
158s -
max time network
164s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
25-11-2022 18:22
Behavioral task
behavioral1
Sample
e7b3dc18446c856dbdcac8ac144a58d2c6096e1679cc34100d99b515715669bb.xls
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
e7b3dc18446c856dbdcac8ac144a58d2c6096e1679cc34100d99b515715669bb.xls
Resource
win10v2004-20220901-en
General
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Target
e7b3dc18446c856dbdcac8ac144a58d2c6096e1679cc34100d99b515715669bb.xls
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Size
110KB
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MD5
eda1ec628124856513d3c3ffa9fb4656
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SHA1
a9ada096433ce2985f5140781dc2028defa8a194
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SHA256
e7b3dc18446c856dbdcac8ac144a58d2c6096e1679cc34100d99b515715669bb
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SHA512
2f5067868dd8325b36ba15ea5d1a113094241b13a188fa384469a25a4c8451aa98c97549d98268a01b10a57c2a031432380d7f317f42972779f255cefde82f2c
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SSDEEP
3072:241gxv7yZmspH7+cclKisUI4ukoRWGNeWVbrzjW7ITkPkn3Vip7ehJtXwBMgI:v1gxv7yZmspH7+cclKisUI4ukoRWGNZX
Malware Config
Signatures
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Process spawned unexpected child process 3 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
cmd.execmd.execmd.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4584 3268 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4680 3268 cmd.exe EXCEL.EXE Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 4496 3268 cmd.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 -
NTFS ADS 1 IoCs
Processes:
EXCEL.EXEdescription ioc process File created C:\Users\Admin\AppData\Local\Temp\72875E00\:Zone.Identifier:$DATA EXCEL.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
EXCEL.EXEpid process 3268 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 16 IoCs
Processes:
EXCEL.EXEpid process 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE 3268 EXCEL.EXE -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 3268 wrote to memory of 1704 3268 EXCEL.EXE splwow64.exe PID 3268 wrote to memory of 1704 3268 EXCEL.EXE splwow64.exe PID 3268 wrote to memory of 4584 3268 EXCEL.EXE cmd.exe PID 3268 wrote to memory of 4584 3268 EXCEL.EXE cmd.exe PID 3268 wrote to memory of 4680 3268 EXCEL.EXE cmd.exe PID 3268 wrote to memory of 4680 3268 EXCEL.EXE cmd.exe PID 3268 wrote to memory of 4496 3268 EXCEL.EXE cmd.exe PID 3268 wrote to memory of 4496 3268 EXCEL.EXE cmd.exe PID 4584 wrote to memory of 5108 4584 cmd.exe attrib.exe PID 4584 wrote to memory of 5108 4584 cmd.exe attrib.exe -
Views/modifies file attributes 1 TTPs 1 IoCs
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\e7b3dc18446c856dbdcac8ac144a58d2c6096e1679cc34100d99b515715669bb.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c attrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\attrib.exeattrib -S -h "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"3⤵
- Views/modifies file attributes
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c Del /F /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c RD /S /Q "C:\Users\Admin\AppData\Roaming\Microsoft\Excel\XLSTART\K4.XLS"2⤵
- Process spawned unexpected child process
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1704-139-0x0000000000000000-mapping.dmp
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memory/3268-138-0x00007FFA74A00000-0x00007FFA74A10000-memory.dmpFilesize
64KB
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memory/3268-134-0x00007FFA76DF0000-0x00007FFA76E00000-memory.dmpFilesize
64KB
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memory/3268-135-0x00007FFA76DF0000-0x00007FFA76E00000-memory.dmpFilesize
64KB
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memory/3268-136-0x00007FFA76DF0000-0x00007FFA76E00000-memory.dmpFilesize
64KB
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memory/3268-137-0x00007FFA74A00000-0x00007FFA74A10000-memory.dmpFilesize
64KB
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memory/3268-132-0x00007FFA76DF0000-0x00007FFA76E00000-memory.dmpFilesize
64KB
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memory/3268-133-0x00007FFA76DF0000-0x00007FFA76E00000-memory.dmpFilesize
64KB
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memory/3268-144-0x000002D70AE11000-0x000002D70AE13000-memory.dmpFilesize
8KB
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memory/3268-145-0x000002D70AE11000-0x000002D70AE13000-memory.dmpFilesize
8KB
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memory/4496-142-0x0000000000000000-mapping.dmp
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memory/4584-140-0x0000000000000000-mapping.dmp
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memory/4680-141-0x0000000000000000-mapping.dmp
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memory/5108-143-0x0000000000000000-mapping.dmp