Analysis
- max time kernel
161s - max time network
169s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
12/01/2022, 18:43
General
- Target 3905973729.xlsm
- Size 84KB
- Sample220112-xcw86adfdk
- SHA256 0bafd60ddca971a6e30bc4b88c757eb075c063b03d728b237331e60e83e33f63
Malware Config
Extracted
-
xlm4.0
-
xlm40.dropper
http://dpmcompras.xyz/wp-content/R28snV2ko7tgD7yuIVa/
-
xlm40.dropper
http://online.libertyinvestmentbank.com/__MACOSX/2LbJ1s8tojqtw0/
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 6 IoCs
Processes
-
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\3905973729.xlsm"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWow64\rundll32.exeC:\Windows\SysWow64\rundll32.exe ..\xni.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exeC:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\xni.ocx",DllRegisterServer3⤵
- Loads dropped DLL
- Drops file in System32 directory
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/1332-284-0x0000000004C90000-0x0000000004CB9000-memory.dmp
memory/1580-286-0x0000000003000000-0x0000000003029000-memory.dmp
memory/3468-125-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-144-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-134-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-136-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-135-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-137-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-138-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-139-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-141-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-140-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-142-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-133-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-143-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-145-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-119-0x00007FFB3D3D0000-0x00007FFB3D3E0000-memory.dmp
memory/3468-124-0x00007FFB3D3D0000-0x00007FFB3D3E0000-memory.dmp
memory/3468-123-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-149-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-122-0x00000208B9DF0000-0x00000208B9DF2000-memory.dmp
memory/3468-121-0x00007FFB3D3D0000-0x00007FFB3D3E0000-memory.dmp
memory/3468-120-0x00007FFB3D3D0000-0x00007FFB3D3E0000-memory.dmp
memory/3468-118-0x00007FFB3D3D0000-0x00007FFB3D3E0000-memory.dmp