Analysis
- max time kernel
158s - max time network
149s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
12/01/2022, 18:43
General
- Target 730_68831.xlsm
- Size 83KB
- Sample220112-xcw86adfb5
- SHA256 5d4b48b112c2fdbb1721bb019e394342f2f4de602fe11bb68f354972021dc86c
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\730_68831.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\Frezbjpl\wdgiiypbzm.una",txxRxd4⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/764-270-0x0000000003E40000-0x0000000003E69000-memory.dmp
memory/2104-269-0x0000000002C00000-0x0000000002D4A000-memory.dmp
memory/3424-124-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/3424-125-0x0000013EED2E0000-0x0000013EED2E2000-memory.dmp
memory/3424-118-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/3424-122-0x0000013EED2E0000-0x0000013EED2E2000-memory.dmp
memory/3424-123-0x0000013EED2E0000-0x0000013EED2E2000-memory.dmp
memory/3424-121-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/3424-120-0x00007FFF06850000-0x00007FFF06860000-memory.dmp
memory/3424-119-0x00007FFF06850000-0x00007FFF06860000-memory.dmp