Analysis
- max time kernel
156s - max time network
157s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
12/01/2022, 18:44
General
- Target 7742579322756.xlsm
- Size 83KB
- Sample220112-xdf9bsdfdm
- SHA256 947dc8d6c337a63466168a9efb2e42e692fad8da89af9c4c295fcd174a89c979
Malware Config
Extracted
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xlm4.0
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xlm40.dropper
http://unifiedpharma.com/wp-admin/ildi5K2aTIrdvEobQ/
Signatures
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Downloads MZ/PE file
- Loads dropped DLL 2 IoCs
- Drops file in System32 directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious use of SetWindowsHookEx 12 IoCs
- Suspicious use of WriteProcessMemory 9 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\7742579322756.xlsm"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\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe ..\adi.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\adi.ocx",DllRegisterServer3⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Cyjnwxh\zxqixzterect.ram",pjtZft4⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/2384-119-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp
memory/2384-115-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp
memory/2384-120-0x000001A527BE0000-0x000001A527BE2000-memory.dmp
memory/2384-121-0x000001A527BE0000-0x000001A527BE2000-memory.dmp
memory/2384-122-0x000001A527BE0000-0x000001A527BE2000-memory.dmp
memory/2384-118-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp
memory/2384-117-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp
memory/2384-116-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp
memory/3772-269-0x0000000003350000-0x000000000349A000-memory.dmp
memory/4056-268-0x0000000002990000-0x0000000002ADA000-memory.dmp