Analysis
- max time kernel
153s - max time network
124s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
13/01/2022, 02:37
General
- Target SecuriteInfo.com.Heur.15230.28143.xlsm
- Size 83KB
- Sample220113-c359jafdck
- SHA256 ae3ac0659210f9f66b73bb14858d53a215ed91ef3c5b812c671fd4e824ee150a
Malware Config
Extracted
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xlm4.0
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xlm40.dropper
http://wateringcanreview.xyz/wp-includes/css/qky11a/
Signatures
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- 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\SecuriteInfo.com.Heur.15230.28143.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 ..\dwa.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\dwa.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\Qafegevowgrze\mfzquyxz.lbb",amsmqRfZPduL4⤵
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1168-269-0x00000000006D0000-0x00000000006F9000-memory.dmp
memory/2696-123-0x0000026ACBAF0000-0x0000026ACBAF2000-memory.dmp
memory/2696-122-0x0000026ACBAF0000-0x0000026ACBAF2000-memory.dmp
memory/2696-124-0x0000026ACBAF0000-0x0000026ACBAF2000-memory.dmp
memory/2696-130-0x00007FFB6CF90000-0x00007FFB6CFA0000-memory.dmp
memory/2696-118-0x00007FFB6CF90000-0x00007FFB6CFA0000-memory.dmp
memory/2696-121-0x00007FFB6CF90000-0x00007FFB6CFA0000-memory.dmp
memory/2696-120-0x00007FFB6CF90000-0x00007FFB6CFA0000-memory.dmp
memory/2696-119-0x00007FFB6CF90000-0x00007FFB6CFA0000-memory.dmp
memory/3808-270-0x0000000000D50000-0x0000000000DFE000-memory.dmp