Analysis
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max time kernel
78s -
max time network
137s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
18-12-2020 15:00
Static task
static1
Behavioral task
behavioral1
Sample
dictate.12.20.doc
Resource
win7v20201028
Behavioral task
behavioral2
Sample
dictate.12.20.doc
Resource
win10v20201028
General
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Target
dictate.12.20.doc
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Size
80KB
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MD5
62c50cfe2bf091d4467d173269013bc1
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SHA1
3aa44d53b3f6a7e819aef69f11f5f3bd7c9c76e1
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SHA256
30739a63f06056178c395aea513686a49652ed9cb7f81c4baabee6cd8f950c9f
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SHA512
c86444b42e7633ac05f349fa363de6e0537579cf86aff4158737a32f7298f6b7ee7eeaabc1d628f576facef0c2541a1150c6adce3d4e773b31a132006933c20e
Malware Config
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:
rundll32.exedescription pid pid_target process target process Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 2704 3368 rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
WINWORD.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WINWORD.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
WINWORD.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE -
Modifies registry class 1 IoCs
Processes:
rundll32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings rundll32.exe -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
Processes:
WINWORD.EXEpid process 576 WINWORD.EXE 576 WINWORD.EXE -
Suspicious use of SetWindowsHookEx 18 IoCs
Processes:
WINWORD.EXEpid process 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE 576 WINWORD.EXE -
Suspicious use of WriteProcessMemory 6 IoCs
Processes:
rundll32.exemshta.exedescription pid process target process PID 2704 wrote to memory of 860 2704 rundll32.exe mshta.exe PID 2704 wrote to memory of 860 2704 rundll32.exe mshta.exe PID 2704 wrote to memory of 860 2704 rundll32.exe mshta.exe PID 860 wrote to memory of 3988 860 mshta.exe rundll32.exe PID 860 wrote to memory of 3988 860 mshta.exe rundll32.exe PID 860 wrote to memory of 3988 860 mshta.exe rundll32.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\dictate.12.20.doc" /o ""1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
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C:\Windows\system32\rundll32.exerundll32.exe url.dll,OpenURL c:\users\public\index.hta1⤵
- Process spawned unexpected child process
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\mshta.exe"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\index.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exe"C:\Windows\System32\rundll32.exe" c:\programdata\a8crv.pdf,ShowDialogA -r3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\users\public\index.htaMD5
afc2e8e99d54697628a411c8445d6dca
SHA16fad0bbe6e1ffb2ab894c47d3fb7a8bdeb0a8ef6
SHA2567e4ac89ede57f68f64f2e4fda568998ad3236862a30ba2c4b5403391bbb4cb75
SHA512224da383fe131674196f7d6ecb1564e1709821721354a14e5893714f2ce438e85649337e643c00c3aeb68c6d61c16f474435e064cf68cedb314802118ef8bf39
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memory/576-2-0x00007FFC304B0000-0x00007FFC30AE7000-memory.dmpFilesize
6.2MB
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memory/576-6-0x00007FFC320F0000-0x00007FFC34C13000-memory.dmpFilesize
43.1MB
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memory/576-7-0x00007FFC320F0000-0x00007FFC34C13000-memory.dmpFilesize
43.1MB
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memory/576-8-0x00007FFC320F0000-0x00007FFC34C13000-memory.dmpFilesize
43.1MB
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memory/576-9-0x00007FFC320F0000-0x00007FFC34C13000-memory.dmpFilesize
43.1MB
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memory/860-4-0x0000000000000000-mapping.dmp
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memory/3988-5-0x0000000000000000-mapping.dmp