12fafc52c5d67e9ce5913b2fe010b5f0a8333d660d2f9b151e7a625f4444c407

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msnlx32.exe"	3ece075dc97570eab680b3e9b9a7e0ea.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}\StubPath = "msnlx32.exe"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}	3ece075dc97570eab680b3e9b9a7e0ea.exe

Executes dropped EXE 1 IoCs

pid	Process
3000	svchost.exe

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

Change Default File Association

T1546.001

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	3ece075dc97570eab680b3e9b9a7e0ea.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	svchost.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	3ece075dc97570eab680b3e9b9a7e0ea.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	3ece075dc97570eab680b3e9b9a7e0ea.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	svchost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\Software\Microsoft\Windows\CurrentVersion\Run\VCL = "vcl32.exe"	svchost.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\vcl32.exe	3ece075dc97570eab680b3e9b9a7e0ea.exe
File opened for modification	C:\Windows\SysWOW64\vcl32.exe	3ece075dc97570eab680b3e9b9a7e0ea.exe
File created	C:\Windows\SysWOW64\msnlx32.exe	3ece075dc97570eab680b3e9b9a7e0ea.exe
File opened for modification	C:\Windows\SysWOW64\msnlx32.exe	3ece075dc97570eab680b3e9b9a7e0ea.exe
File created	C:\Windows\SysWOW64\concp32.exe	3ece075dc97570eab680b3e9b9a7e0ea.exe
File opened for modification	C:\Windows\SysWOW64\concp32.exe	3ece075dc97570eab680b3e9b9a7e0ea.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\svchost.exe	3ece075dc97570eab680b3e9b9a7e0ea.exe
File opened for modification	C:\Windows\svchost.exe	3ece075dc97570eab680b3e9b9a7e0ea.exe

Modifies registry class 12 IoCs

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}\sm = ebb5525fa3bcf9422c8ff945977d6af9	3ece075dc97570eab680b3e9b9a7e0ea.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	3ece075dc97570eab680b3e9b9a7e0ea.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}\u2 = a54a6b702f92fdf2acd57599e2ae1608015dff41aa020117fc9bd8e2dcf4340f3fa61eb55d6f28597df90602703809d4	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}\v = "165"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}	3ece075dc97570eab680b3e9b9a7e0ea.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	3ece075dc97570eab680b3e9b9a7e0ea.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}\ax = 1f6c88ae601032b24b2a22029fa71b79	3ece075dc97570eab680b3e9b9a7e0ea.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}\InprocServer32	svchost.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}\u0 = 658663d26f8bad325217a06063847056939f558d910ed252e05dd0113550f7fc0f4da82ff73a0681ba604c2d4f23269f	svchost.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{B5E50B17-8B9A-11D5-EBA1-F78EEEEEE983}\u1 = 551d2e0658054ba756fd3798fea5ffca42865cb762a31639dabd7f2cca44e226	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\concp32.exe \"%1\" %*"	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1880	3ece075dc97570eab680b3e9b9a7e0ea.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1880 wrote to memory of 3000	1880	3ece075dc97570eab680b3e9b9a7e0ea.exe	28
PID 1880 wrote to memory of 3000	1880	3ece075dc97570eab680b3e9b9a7e0ea.exe	28
PID 1880 wrote to memory of 3000	1880	3ece075dc97570eab680b3e9b9a7e0ea.exe	28
PID 1880 wrote to memory of 3000	1880	3ece075dc97570eab680b3e9b9a7e0ea.exe	28

C:\Users\Admin\AppData\Local\Temp\3ece075dc97570eab680b3e9b9a7e0ea.exe
"C:\Users\Admin\AppData\Local\Temp\3ece075dc97570eab680b3e9b9a7e0ea.exe"
1⤵
- Modifies Installed Components in the registry
- Modifies system executable filetype association
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1880
- C:\Windows\svchost.exe
  C:\Windows\svchost.exe
  2⤵
  - Modifies Installed Components in the registry
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Adds Run key to start application
  - Modifies registry class
  PID:3000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Modify Registry

3