Analysis
- max time kernel
156s - max time network
161s - platform
windows10_x64 - resource
win10-en-20211208 - submitted
12/01/2022, 18:43
General
- Target K_98.xlsm
- Size 84KB
- Sample220112-xcw86adfb6
- SHA256 8872f32f4d3040e9544fd6eebc8af2d86387b5008a960e8a1392ce3039a379b8
Malware Config
Extracted
-
xlm4.0
-
xlm40.dropper
http://insertcatherreview.xyz/wp-includes/o23k5ted/
-
xlm40.dropper
https://mewb.org/wp-admin/2fcpQyzanzkiO1/
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
- 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\K_98.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 ..\adi.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\adi.ocx",DllRegisterServer3⤵
- Loads dropped DLL
-
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
memory/904-275-0x0000000000F30000-0x0000000000F59000-memory.dmp
memory/3932-123-0x000001E8A9660000-0x000001E8A9662000-memory.dmp
memory/3932-125-0x000001E8A9660000-0x000001E8A9662000-memory.dmp
memory/3932-131-0x00007FF86F1F0000-0x00007FF86F200000-memory.dmp
memory/3932-132-0x00007FF86F1F0000-0x00007FF86F200000-memory.dmp
memory/3932-124-0x00007FF8726E0000-0x00007FF8726F0000-memory.dmp
memory/3932-122-0x000001E8A9660000-0x000001E8A9662000-memory.dmp
memory/3932-118-0x00007FF8726E0000-0x00007FF8726F0000-memory.dmp
memory/3932-121-0x00007FF8726E0000-0x00007FF8726F0000-memory.dmp
memory/3932-120-0x00007FF8726E0000-0x00007FF8726F0000-memory.dmp
memory/3932-119-0x00007FF8726E0000-0x00007FF8726F0000-memory.dmp