ddb0cb4678fd74a89202b5a6957b2a175c7b84332014dc524ff3f5e87a0185ae

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	svchost.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 6 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	injector_3.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	icsys.icn.exe
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

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\NalDrv\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\NalDrv.sys"	9xskv.exe

Checks BIOS information in registry 2 TTPs 12 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
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	icsys.icn.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	icsys.icn.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	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	injector_3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	injector_3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	svchost.exe

Executes dropped EXE 7 IoCs

pid	Process
2456	injector_3.exe
2472	icsys.icn.exe
2516	explorer.exe
2488	spoolsv.exe
2536	svchost.exe
2396	spoolsv.exe
2988	9xskv.exe

Loads dropped DLL 8 IoCs

pid	Process
1904	injector_3.exe
2868	Process not Found
1904	injector_3.exe
2472	icsys.icn.exe
2516	explorer.exe
2488	spoolsv.exe
2536	svchost.exe
2456	injector_3.exe

Themida packer 20 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/1904-0-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/files/0x0034000000014701-14.dat	themida
behavioral1/memory/2472-16-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/files/0x0008000000014c25-26.dat	themida
behavioral1/memory/2516-28-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/files/0x0008000000015023-35.dat	themida
behavioral1/memory/2488-40-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/files/0x0008000000015cb9-50.dat	themida
behavioral1/memory/2536-52-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/memory/2396-62-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/memory/2396-72-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/memory/2488-73-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/memory/2472-76-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/memory/1904-75-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/memory/2516-81-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/memory/2536-82-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/memory/2536-89-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/memory/2516-92-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/memory/2516-98-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida
behavioral1/memory/2516-104-0x0000000000400000-0x0000000000A0E000-memory.dmp	themida

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

Checks whether UAC is enabled 1 TTPs 6 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	explorer.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	svchost.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	spoolsv.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	injector_3.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	icsys.icn.exe

Drops file in System32 directory 2 IoCs

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

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
1904	injector_3.exe
2472	icsys.icn.exe
2516	explorer.exe
2488	spoolsv.exe
2536	svchost.exe
2396	spoolsv.exe

Drops file in Windows directory 7 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Resources\Themes\icsys.icn.exe	injector_3.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	icsys.icn.exe
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe
File created	C:\Windows\SoftwareDistribution\Download\9xskv.sys	injector_3.exe
File created	C:\Windows\SoftwareDistribution\Download\9xskv.exe	injector_3.exe
File opened for modification	C:\Windows\Resources\tjud.exe	explorer.exe

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

System Information Discovery
T1082

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
888	schtasks.exe
2460	schtasks.exe
2344	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
1904	injector_3.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2516	explorer.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe
2536	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2516	explorer.exe
2536	svchost.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2988	9xskv.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeSystemEnvironmentPrivilege	2988	9xskv.exe
Token: SeDebugPrivilege	2988	9xskv.exe
Token: SeLoadDriverPrivilege	2988	9xskv.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1904	injector_3.exe
1904	injector_3.exe
2472	icsys.icn.exe
2472	icsys.icn.exe
2516	explorer.exe
2516	explorer.exe
2488	spoolsv.exe
2488	spoolsv.exe
2536	svchost.exe
2536	svchost.exe
2396	spoolsv.exe
2396	spoolsv.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 1904 wrote to memory of 2456	1904	injector_3.exe	28
PID 1904 wrote to memory of 2456	1904	injector_3.exe	28
PID 1904 wrote to memory of 2456	1904	injector_3.exe	28
PID 1904 wrote to memory of 2456	1904	injector_3.exe	28
PID 1904 wrote to memory of 2472	1904	injector_3.exe	30
PID 1904 wrote to memory of 2472	1904	injector_3.exe	30
PID 1904 wrote to memory of 2472	1904	injector_3.exe	30
PID 1904 wrote to memory of 2472	1904	injector_3.exe	30
PID 2472 wrote to memory of 2516	2472	icsys.icn.exe	31
PID 2472 wrote to memory of 2516	2472	icsys.icn.exe	31
PID 2472 wrote to memory of 2516	2472	icsys.icn.exe	31
PID 2472 wrote to memory of 2516	2472	icsys.icn.exe	31
PID 2516 wrote to memory of 2488	2516	explorer.exe	32
PID 2516 wrote to memory of 2488	2516	explorer.exe	32
PID 2516 wrote to memory of 2488	2516	explorer.exe	32
PID 2516 wrote to memory of 2488	2516	explorer.exe	32
PID 2488 wrote to memory of 2536	2488	spoolsv.exe	33
PID 2488 wrote to memory of 2536	2488	spoolsv.exe	33
PID 2488 wrote to memory of 2536	2488	spoolsv.exe	33
PID 2488 wrote to memory of 2536	2488	spoolsv.exe	33
PID 2536 wrote to memory of 2396	2536	svchost.exe	34
PID 2536 wrote to memory of 2396	2536	svchost.exe	34
PID 2536 wrote to memory of 2396	2536	svchost.exe	34
PID 2536 wrote to memory of 2396	2536	svchost.exe	34
PID 2456 wrote to memory of 2988	2456	injector_3.exe	35
PID 2456 wrote to memory of 2988	2456	injector_3.exe	35
PID 2456 wrote to memory of 2988	2456	injector_3.exe	35
PID 2516 wrote to memory of 2340	2516	explorer.exe	37
PID 2516 wrote to memory of 2340	2516	explorer.exe	37
PID 2516 wrote to memory of 2340	2516	explorer.exe	37
PID 2516 wrote to memory of 2340	2516	explorer.exe	37
PID 2536 wrote to memory of 888	2536	svchost.exe	38
PID 2536 wrote to memory of 888	2536	svchost.exe	38
PID 2536 wrote to memory of 888	2536	svchost.exe	38
PID 2536 wrote to memory of 888	2536	svchost.exe	38
PID 2536 wrote to memory of 2460	2536	svchost.exe	43
PID 2536 wrote to memory of 2460	2536	svchost.exe	43
PID 2536 wrote to memory of 2460	2536	svchost.exe	43
PID 2536 wrote to memory of 2460	2536	svchost.exe	43
PID 2536 wrote to memory of 2344	2536	svchost.exe	45
PID 2536 wrote to memory of 2344	2536	svchost.exe	45
PID 2536 wrote to memory of 2344	2536	svchost.exe	45
PID 2536 wrote to memory of 2344	2536	svchost.exe	45

C:\Users\Admin\AppData\Local\Temp\injector_3.exe
"C:\Users\Admin\AppData\Local\Temp\injector_3.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Loads dropped DLL
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1904
- \??\c:\users\admin\appdata\local\temp\injector_3.exe
  c:\users\admin\appdata\local\temp\injector_3.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:2456
- - C:\Windows\SoftwareDistribution\Download\9xskv.exe
    "C:\Windows\SoftwareDistribution\Download\9xskv.exe" -map C:\Windows\SoftwareDistribution\Download\9xskv.sys
    3⤵
    - Sets service image path in registry
    - Executes dropped EXE
    - Suspicious behavior: LoadsDriver
    - Suspicious use of AdjustPrivilegeToken
    PID:2988
- C:\Windows\Resources\Themes\icsys.icn.exe
  C:\Windows\Resources\Themes\icsys.icn.exe
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - Checks whether UAC is enabled
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2472
- - \??\c:\windows\resources\themes\explorer.exe
    c:\windows\resources\themes\explorer.exe
    3⤵
    - 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
    - Loads dropped DLL
    - Adds Run key to start application
    - Checks whether UAC is enabled
    - 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:2516
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      Identifies VirtualBox via ACPI registry values (likely anti-VM)
      Checks BIOS information in registry
      Executes dropped EXE
      Loads dropped DLL
      Checks whether UAC is enabled
      Suspicious use of NtSetInformationThreadHideFromDebugger
      Drops file in Windows directory
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:2488
    - - \??\c:\windows\resources\svchost.exe
        
        c:\windows\resources\svchost.exe
        5⤵
        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
        Loads dropped DLL
        Adds Run key to start application
        Checks whether UAC is enabled
        Drops file in System32 directory
        Suspicious use of NtSetInformationThreadHideFromDebugger
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:2536
      - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        6⤵
        Identifies VirtualBox via ACPI registry values (likely anti-VM)
        Checks BIOS information in registry
        Executes dropped EXE
        Checks whether UAC is enabled
        Suspicious use of NtSetInformationThreadHideFromDebugger
        Suspicious use of SetWindowsHookEx
        
        PID:2396
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 04:58 /f
        6⤵
        Creates scheduled task(s)
        
        PID:888
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 04:59 /f
        6⤵
        Creates scheduled task(s)
        
        PID:2460
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 05:00 /f
        6⤵
        Creates scheduled task(s)
        
        PID:2344
  - - C:\Windows\Explorer.exe
      C:\Windows\Explorer.exe
      4⤵
      PID:2340

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

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry