585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df

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

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 5 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	spoolsv.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	svchost.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	spoolsv.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe

Modifies Installed Components in the registry 2 TTPs 8 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
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
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

Checks BIOS information in registry 2 TTPs 10 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svchost.exe

Executes dropped EXE 4 IoCs

pid	Process
2688	explorer.exe
2468	spoolsv.exe
1956	svchost.exe
320	spoolsv.exe

Identifies Wine through registry keys 2 TTPs 5 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Wine	svchost.exe
Key opened	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Wine	spoolsv.exe
Key opened	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Wine	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe
Key opened	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Wine	explorer.exe
Key opened	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Wine	spoolsv.exe

Loads dropped DLL 8 IoCs

pid	Process
2996	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe
2996	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe
2688	explorer.exe
2688	explorer.exe
2468	spoolsv.exe
2468	spoolsv.exe
1956	svchost.exe
1956	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\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
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

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

pid	Process
2996	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe
2688	explorer.exe
2468	spoolsv.exe
1956	svchost.exe
320	spoolsv.exe

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\system\svchost.exe	svchost.exe
File opened for modification	C:\Windows\system\udsys.exe	explorer.exe
File opened for modification	\??\c:\windows\system\explorer.exe	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.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

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2996	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe
2996	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe
2688	explorer.exe
2468	spoolsv.exe
1956	svchost.exe
320	spoolsv.exe
2688	explorer.exe
2688	explorer.exe
2688	explorer.exe
2688	explorer.exe
2688	explorer.exe
2688	explorer.exe
1956	svchost.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
1956	svchost.exe
2688	explorer.exe
2688	explorer.exe
1956	svchost.exe
2688	explorer.exe
1956	svchost.exe
1956	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2688	explorer.exe
1956	svchost.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2996	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe
2996	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe
2688	explorer.exe
2688	explorer.exe
2468	spoolsv.exe
2468	spoolsv.exe
1956	svchost.exe
1956	svchost.exe
320	spoolsv.exe
320	spoolsv.exe
2688	explorer.exe
2688	explorer.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2688	2996	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe	28
PID 2996 wrote to memory of 2688	2996	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe	28
PID 2996 wrote to memory of 2688	2996	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe	28
PID 2996 wrote to memory of 2688	2996	585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe	28
PID 2688 wrote to memory of 2468	2688	explorer.exe	29
PID 2688 wrote to memory of 2468	2688	explorer.exe	29
PID 2688 wrote to memory of 2468	2688	explorer.exe	29
PID 2688 wrote to memory of 2468	2688	explorer.exe	29
PID 2468 wrote to memory of 1956	2468	spoolsv.exe	30
PID 2468 wrote to memory of 1956	2468	spoolsv.exe	30
PID 2468 wrote to memory of 1956	2468	spoolsv.exe	30
PID 2468 wrote to memory of 1956	2468	spoolsv.exe	30
PID 1956 wrote to memory of 320	1956	svchost.exe	31
PID 1956 wrote to memory of 320	1956	svchost.exe	31
PID 1956 wrote to memory of 320	1956	svchost.exe	31
PID 1956 wrote to memory of 320	1956	svchost.exe	31
PID 1956 wrote to memory of 1840	1956	svchost.exe	32
PID 1956 wrote to memory of 1840	1956	svchost.exe	32
PID 1956 wrote to memory of 1840	1956	svchost.exe	32
PID 1956 wrote to memory of 1840	1956	svchost.exe	32
PID 1956 wrote to memory of 1888	1956	svchost.exe	36
PID 1956 wrote to memory of 1888	1956	svchost.exe	36
PID 1956 wrote to memory of 1888	1956	svchost.exe	36
PID 1956 wrote to memory of 1888	1956	svchost.exe	36
PID 1956 wrote to memory of 2596	1956	svchost.exe	38
PID 1956 wrote to memory of 2596	1956	svchost.exe	38
PID 1956 wrote to memory of 2596	1956	svchost.exe	38
PID 1956 wrote to memory of 2596	1956	svchost.exe	38

C:\Users\Admin\AppData\Local\Temp\585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe
"C:\Users\Admin\AppData\Local\Temp\585db90698b0674f64892565b28262e6ccdfd4c67a1da2b18f9e26dc7478d4df.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2996
- \??\c:\windows\system\explorer.exe
  c:\windows\system\explorer.exe
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visiblity of hidden/system files in Explorer
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Modifies Installed Components in the registry
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2688
- - \??\c:\windows\system\spoolsv.exe
    c:\windows\system\spoolsv.exe SE
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Loads dropped DLL
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - Drops file in Windows directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2468
  - - \??\c:\windows\system\svchost.exe
      c:\windows\system\svchost.exe
      4⤵
      Modifies WinLogon for persistence
      Modifies visiblity of hidden/system files in Explorer
      Identifies VirtualBox via ACPI registry values (likely anti-VM)
      Modifies Installed Components in the registry
      Checks BIOS information in registry
      Executes dropped EXE
      Identifies Wine through registry keys
      Loads dropped DLL
      Adds Run key to start application
      Suspicious use of NtSetInformationThreadHideFromDebugger
      Drops file in Windows directory
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1956
    - - \??\c:\windows\system\spoolsv.exe
        
        c:\windows\system\spoolsv.exe PR
        5⤵
        Identifies VirtualBox via ACPI registry values (likely anti-VM)
        Checks BIOS information in registry
        Executes dropped EXE
        Identifies Wine through registry keys
        Suspicious use of NtSetInformationThreadHideFromDebugger
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of SetWindowsHookEx
        
        PID:320
    - - C:\Windows\SysWOW64\at.exe
        
        at 21:56 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:1840
    - - C:\Windows\SysWOW64\at.exe
        
        at 21:57 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:1888
    - - C:\Windows\SysWOW64\at.exe
        
        at 21:58 /interactive /every:M,T,W,Th,F,S,Su c:\windows\system\svchost.exe
        5⤵
        
        PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

T1082

Virtualization/Sandbox Evasion