b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Oracle\VirtualBox Guest Additions	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe

Looks for VMWare Tools registry key 2 TTPs 1 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\VMware, Inc.\VMware Tools	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe

Checks BIOS information in registry 2 TTPs 2 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	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe

Executes dropped EXE 6 IoCs

pid	Process
3032	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
1300	icsys.icn.exe
1912	explorer.exe
1064	spoolsv.exe
2572	svchost.exe
2680	spoolsv.exe

Loads dropped DLL 11 IoCs

pid	Process
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
1300	icsys.icn.exe
1912	explorer.exe
1064	spoolsv.exe
2572	svchost.exe
3016	WerFault.exe
3016	WerFault.exe
3016	WerFault.exe
3016	WerFault.exe
3016	WerFault.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

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.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

Drops file in Windows directory 5 IoCs

description	ioc	Process
File opened for modification	\??\c:\windows\resources\spoolsv.exe	explorer.exe
File opened for modification	\??\c:\windows\resources\svchost.exe	spoolsv.exe
File opened for modification	C:\Windows\Resources\tjud.exe	explorer.exe
File opened for modification	C:\Windows\Resources\Themes\icsys.icn.exe	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
File opened for modification	\??\c:\windows\resources\themes\explorer.exe	icsys.icn.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3016	3032	WerFault.exe	28

System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	spoolsv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icsys.icn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

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

persistence execution

Scheduled Task

pid	Process
2332	schtasks.exe
1748	schtasks.exe
1092	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
1912	explorer.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe
2572	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2572	svchost.exe
1912	explorer.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3032	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
1300	icsys.icn.exe
1300	icsys.icn.exe
1912	explorer.exe
1912	explorer.exe
1064	spoolsv.exe
1064	spoolsv.exe
2572	svchost.exe
2572	svchost.exe
2680	spoolsv.exe
2680	spoolsv.exe

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 2444 wrote to memory of 3032	2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	28
PID 2444 wrote to memory of 3032	2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	28
PID 2444 wrote to memory of 3032	2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	28
PID 2444 wrote to memory of 3032	2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	28
PID 2444 wrote to memory of 1300	2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	29
PID 2444 wrote to memory of 1300	2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	29
PID 2444 wrote to memory of 1300	2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	29
PID 2444 wrote to memory of 1300	2444	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	29
PID 1300 wrote to memory of 1912	1300	icsys.icn.exe	30
PID 1300 wrote to memory of 1912	1300	icsys.icn.exe	30
PID 1300 wrote to memory of 1912	1300	icsys.icn.exe	30
PID 1300 wrote to memory of 1912	1300	icsys.icn.exe	30
PID 1912 wrote to memory of 1064	1912	explorer.exe	32
PID 1912 wrote to memory of 1064	1912	explorer.exe	32
PID 1912 wrote to memory of 1064	1912	explorer.exe	32
PID 1912 wrote to memory of 1064	1912	explorer.exe	32
PID 1064 wrote to memory of 2572	1064	spoolsv.exe	33
PID 1064 wrote to memory of 2572	1064	spoolsv.exe	33
PID 1064 wrote to memory of 2572	1064	spoolsv.exe	33
PID 1064 wrote to memory of 2572	1064	spoolsv.exe	33
PID 2572 wrote to memory of 2680	2572	svchost.exe	34
PID 2572 wrote to memory of 2680	2572	svchost.exe	34
PID 2572 wrote to memory of 2680	2572	svchost.exe	34
PID 2572 wrote to memory of 2680	2572	svchost.exe	34
PID 1912 wrote to memory of 2612	1912	explorer.exe	35
PID 1912 wrote to memory of 2612	1912	explorer.exe	35
PID 1912 wrote to memory of 2612	1912	explorer.exe	35
PID 1912 wrote to memory of 2612	1912	explorer.exe	35
PID 2572 wrote to memory of 2332	2572	svchost.exe	36
PID 2572 wrote to memory of 2332	2572	svchost.exe	36
PID 2572 wrote to memory of 2332	2572	svchost.exe	36
PID 2572 wrote to memory of 2332	2572	svchost.exe	36
PID 3032 wrote to memory of 3016	3032	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	38
PID 3032 wrote to memory of 3016	3032	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	38
PID 3032 wrote to memory of 3016	3032	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	38
PID 3032 wrote to memory of 3016	3032	b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe	38
PID 2572 wrote to memory of 1748	2572	svchost.exe	42
PID 2572 wrote to memory of 1748	2572	svchost.exe	42
PID 2572 wrote to memory of 1748	2572	svchost.exe	42
PID 2572 wrote to memory of 1748	2572	svchost.exe	42
PID 2572 wrote to memory of 1092	2572	svchost.exe	44
PID 2572 wrote to memory of 1092	2572	svchost.exe	44
PID 2572 wrote to memory of 1092	2572	svchost.exe	44
PID 2572 wrote to memory of 1092	2572	svchost.exe	44

C:\Users\Admin\AppData\Local\Temp\b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
"C:\Users\Admin\AppData\Local\Temp\b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe"
1⤵
- Loads dropped DLL
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2444
- \??\c:\users\admin\appdata\local\temp\b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
  c:\users\admin\appdata\local\temp\b6d43405e5d36e6e74de2ff2d22d864edb0db18f9db4e928def7155054b4e252.exe
  2⤵
  - Looks for VirtualBox Guest Additions in registry
  - Looks for VMWare Tools registry key
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Maps connected drives based on registry
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3032
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3032 -s 15928
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:3016
- C:\Windows\Resources\Themes\icsys.icn.exe
  C:\Windows\Resources\Themes\icsys.icn.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Windows directory
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1300
- - \??\c:\windows\resources\themes\explorer.exe
    c:\windows\resources\themes\explorer.exe
    3⤵
    - Modifies visiblity of hidden/system files in Explorer
    - Executes dropped EXE
    - Loads dropped DLL
    - Adds Run key to start application
    - Drops file in System32 directory
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1912
  - - \??\c:\windows\resources\spoolsv.exe
      c:\windows\resources\spoolsv.exe SE
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:1064
    - - \??\c:\windows\resources\svchost.exe
        
        c:\windows\resources\svchost.exe
        5⤵
        Modifies visiblity of hidden/system files in Explorer
        Executes dropped EXE
        Loads dropped DLL
        Adds Run key to start application
        Drops file in System32 directory
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: GetForegroundWindowSpam
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:2572
      - \??\c:\windows\resources\spoolsv.exe
        
        c:\windows\resources\spoolsv.exe PR
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of SetWindowsHookEx
        
        PID:2680
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 06:33 /f
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2332
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 06:34 /f
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1748
      - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /tn "svchost" /tr "c:\windows\resources\svchost.exe" /sc daily /st 06:35 /f
        6⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1092
  - - C:\Windows\Explorer.exe
      C:\Windows\Explorer.exe
      4⤵
      PID:2612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion