d8450b72d767c68655bc4e8482f3b887f3e68b5643127a6836e84a11e4082161

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__	4f4cefde786d2d2fe0f061cfcceca68f.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	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4f4cefde786d2d2fe0f061cfcceca68f.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\SystemBiosVersion	4f4cefde786d2d2fe0f061cfcceca68f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	spoolsv.exe

Executes dropped EXE 4 IoCs

pid	Process
2608	explorer.exe
2088	spoolsv.exe
2696	svchost.exe
2312	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	4f4cefde786d2d2fe0f061cfcceca68f.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
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

Loads dropped DLL 8 IoCs

pid	Process
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
2608	explorer.exe
2608	explorer.exe
2088	spoolsv.exe
2088	spoolsv.exe
2696	svchost.exe
2696	svchost.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Explorer = "c:\\windows\\resources\\themes\\explorer.exe RO"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\Svchost = "c:\\windows\\resources\\svchost.exe RO"	svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\explorer.exe	svchost.exe
File opened for modification	C:\Windows\SysWOW64\explorer.exe	explorer.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

pid	Process
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
2608	explorer.exe
2088	spoolsv.exe
2696	svchost.exe
2312	spoolsv.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	4f4cefde786d2d2fe0f061cfcceca68f.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe

Creates scheduled task(s) 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

pid	Process
988	schtasks.exe
1936	schtasks.exe
704	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2088	spoolsv.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2312	spoolsv.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2608	explorer.exe
2696	svchost.exe
2696	svchost.exe
2696	svchost.exe
2608	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2608	explorer.exe
2696	svchost.exe

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
1108	4f4cefde786d2d2fe0f061cfcceca68f.exe
2608	explorer.exe
2608	explorer.exe
2088	spoolsv.exe
2088	spoolsv.exe
2696	svchost.exe
2696	svchost.exe
2312	spoolsv.exe
2312	spoolsv.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1108 wrote to memory of 2608	1108	4f4cefde786d2d2fe0f061cfcceca68f.exe	28
PID 1108 wrote to memory of 2608	1108	4f4cefde786d2d2fe0f061cfcceca68f.exe	28
PID 1108 wrote to memory of 2608	1108	4f4cefde786d2d2fe0f061cfcceca68f.exe	28
PID 1108 wrote to memory of 2608	1108	4f4cefde786d2d2fe0f061cfcceca68f.exe	28
PID 2608 wrote to memory of 2088	2608	explorer.exe	29
PID 2608 wrote to memory of 2088	2608	explorer.exe	29
PID 2608 wrote to memory of 2088	2608	explorer.exe	29
PID 2608 wrote to memory of 2088	2608	explorer.exe	29
PID 2088 wrote to memory of 2696	2088	spoolsv.exe	30
PID 2088 wrote to memory of 2696	2088	spoolsv.exe	30
PID 2088 wrote to memory of 2696	2088	spoolsv.exe	30
PID 2088 wrote to memory of 2696	2088	spoolsv.exe	30
PID 2696 wrote to memory of 2312	2696	svchost.exe	31
PID 2696 wrote to memory of 2312	2696	svchost.exe	31
PID 2696 wrote to memory of 2312	2696	svchost.exe	31
PID 2696 wrote to memory of 2312	2696	svchost.exe	31
PID 2608 wrote to memory of 2404	2608	explorer.exe	32
PID 2608 wrote to memory of 2404	2608	explorer.exe	32
PID 2608 wrote to memory of 2404	2608	explorer.exe	32
PID 2608 wrote to memory of 2404	2608	explorer.exe	32
PID 2696 wrote to memory of 988	2696	svchost.exe	34
PID 2696 wrote to memory of 988	2696	svchost.exe	34
PID 2696 wrote to memory of 988	2696	svchost.exe	34
PID 2696 wrote to memory of 988	2696	svchost.exe	34

C:\Users\Admin\AppData\Local\Temp\4f4cefde786d2d2fe0f061cfcceca68f.exe
"C:\Users\Admin\AppData\Local\Temp\4f4cefde786d2d2fe0f061cfcceca68f.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:1108
- \??\c:\windows\resources\themes\explorer.exe
  c:\windows\resources\themes\explorer.exe
  2⤵
  - Modifies visiblity of hidden/system files in Explorer
  - 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
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2608
- - \??\c:\windows\resources\spoolsv.exe
    c:\windows\resources\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:2088
  - - \??\c:\windows\resources\svchost.exe
      c:\windows\resources\svchost.exe
      4⤵
      Modifies visiblity of hidden/system files in Explorer
      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
      Adds Run key to start application
      Drops file in System32 directory
      Suspicious use of NtSetInformationThreadHideFromDebugger
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2696
    - - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\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:2312
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 02:11 /f
        5⤵
        Creates scheduled task(s)
        
        PID:988
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 02:12 /f
        5⤵
        Creates scheduled task(s)
        
        PID:1936
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 02:13 /f
        5⤵
        Creates scheduled task(s)
        
        PID:704
- - C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe
    3⤵
    PID:2404

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

T1082

Virtualization/Sandbox Evasion