5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c

Processes:

explorer.exesvchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "C:\\Windows\\explorer.exe, c:\\windows\\system\\explorer.exe"	svchost.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

Processes:

explorer.exesvchost.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Modifies Installed Components in the registry 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

explorer.exesvchost.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	explorer.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Active Setup\Installed Components\{Y479C6D0-OTRW-U5GH-S1EE-E0AC10B4E666}\StubPath = "C:\\Users\\Admin\\AppData\\Roaming\\mrsys.exe MR"	svchost.exe
Key deleted	\REGISTRY\MACHINE\SOFTWARE\WOW6432NODE\MICROSOFT\ACTIVE SETUP\INSTALLED COMPONENTS\{F146C9B1-VMVQ-A9RC-NUFL-D0BA00B4E999}	svchost.exe

Executes dropped EXE 4 IoCs

Processes:

explorer.exespoolsv.exesvchost.exespoolsv.exe

pid process

1932 explorer.exe
3620 spoolsv.exe
2184 svchost.exe
2404 spoolsv.exe

pid	process
1932	explorer.exe
3620	spoolsv.exe
2184	svchost.exe
2404	spoolsv.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

Processes:

svchost.exeexplorer.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\system\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\system\\explorer.exe RO"	svchost.exe

Drops file in Windows directory 6 IoCs

Processes:

5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exeexplorer.exespoolsv.exesvchost.exe

description	ioc	process
File opened for modification	\??\c:\windows\system\explorer.exe	5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exe
File opened for modification	\??\c:\windows\system\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	spoolsv.exe
File opened for modification	\??\c:\windows\system\explorer.exe	explorer.exe
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exeexplorer.exesvchost.exe

pid	process
1236	5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exe
1236	5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exe
1932	explorer.exe
1932	explorer.exe
1932	explorer.exe
1932	explorer.exe
1932	explorer.exe
1932	explorer.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
2184	svchost.exe
1932	explorer.exe
1932	explorer.exe
2184	svchost.exe
2184	svchost.exe
1932	explorer.exe
1932	explorer.exe
2184	svchost.exe
2184	svchost.exe
1932	explorer.exe
1932	explorer.exe
2184	svchost.exe
2184	svchost.exe
1932	explorer.exe
1932	explorer.exe
2184	svchost.exe
2184	svchost.exe
1932	explorer.exe
1932	explorer.exe
2184	svchost.exe
2184	svchost.exe
1932	explorer.exe
1932	explorer.exe
2184	svchost.exe
2184	svchost.exe
1932	explorer.exe
1932	explorer.exe
1932	explorer.exe
2184	svchost.exe
1932	explorer.exe
2184	svchost.exe
2184	svchost.exe
1932	explorer.exe
2184	svchost.exe
1932	explorer.exe
1932	explorer.exe
1932	explorer.exe
2184	svchost.exe
2184	svchost.exe
1932	explorer.exe
2184	svchost.exe
1932	explorer.exe
2184	svchost.exe
1932	explorer.exe
2184	svchost.exe
1932	explorer.exe
2184	svchost.exe
2184	svchost.exe
1932	explorer.exe
1932	explorer.exe
2184	svchost.exe
2184	svchost.exe
1932	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

Processes:

explorer.exesvchost.exe

pid process

1932 explorer.exe
2184 svchost.exe

pid	process
1932	explorer.exe
2184	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exeexplorer.exespoolsv.exesvchost.exespoolsv.exe

pid	process
1236	5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exe
1236	5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exe
1932	explorer.exe
1932	explorer.exe
3620	spoolsv.exe
3620	spoolsv.exe
2184	svchost.exe
2184	svchost.exe
2404	spoolsv.exe
2404	spoolsv.exe
1932	explorer.exe
1932	explorer.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exeexplorer.exespoolsv.exesvchost.exe

description	pid	process	target process
PID 1236 wrote to memory of 1932	1236	5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exe	explorer.exe
PID 1236 wrote to memory of 1932	1236	5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exe	explorer.exe
PID 1236 wrote to memory of 1932	1236	5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exe	explorer.exe
PID 1932 wrote to memory of 3620	1932	explorer.exe	spoolsv.exe
PID 1932 wrote to memory of 3620	1932	explorer.exe	spoolsv.exe
PID 1932 wrote to memory of 3620	1932	explorer.exe	spoolsv.exe
PID 3620 wrote to memory of 2184	3620	spoolsv.exe	svchost.exe
PID 3620 wrote to memory of 2184	3620	spoolsv.exe	svchost.exe
PID 3620 wrote to memory of 2184	3620	spoolsv.exe	svchost.exe
PID 2184 wrote to memory of 2404	2184	svchost.exe	spoolsv.exe
PID 2184 wrote to memory of 2404	2184	svchost.exe	spoolsv.exe
PID 2184 wrote to memory of 2404	2184	svchost.exe	spoolsv.exe
PID 2184 wrote to memory of 4876	2184	svchost.exe	at.exe
PID 2184 wrote to memory of 4876	2184	svchost.exe	at.exe
PID 2184 wrote to memory of 4876	2184	svchost.exe	at.exe
PID 2184 wrote to memory of 1612	2184	svchost.exe	at.exe
PID 2184 wrote to memory of 1612	2184	svchost.exe	at.exe
PID 2184 wrote to memory of 1612	2184	svchost.exe	at.exe
PID 2184 wrote to memory of 4176	2184	svchost.exe	at.exe
PID 2184 wrote to memory of 4176	2184	svchost.exe	at.exe
PID 2184 wrote to memory of 4176	2184	svchost.exe	at.exe

C:\Users\Admin\AppData\Local\Temp\5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exe
"C:\Users\Admin\AppData\Local\Temp\5e0c522ddbdfa11823523f092ee8c31f20a50db180afacab887e6d9badc9525c.exe"
1⤵
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1236

\??\c:\windows\system\explorer.exe
c:\windows\system\explorer.exe
2⤵
- Modifies WinLogon for persistence
- Modifies visiblity of hidden/system files in Explorer
- Modifies Installed Components in the registry
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1932

\??\c:\windows\system\spoolsv.exe
c:\windows\system\spoolsv.exe SE
3⤵
- Executes dropped EXE
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3620

\??\c:\windows\system\svchost.exe
c:\windows\system\svchost.exe
4⤵
- Modifies WinLogon for persistence
- Modifies visiblity of hidden/system files in Explorer
- Modifies Installed Components in the registry
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2184

\??\c:\windows\system\spoolsv.exe
c:\windows\system\spoolsv.exe PR
5⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:2404

C:\Windows\SysWOW64\at.exe
at 00:05 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
5⤵
PID:4876

C:\Windows\SysWOW64\at.exe
at 00:06 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
5⤵
PID:1612

C:\Windows\SysWOW64\at.exe
at 00:07 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
5⤵
PID:4176

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

System Information Discovery