amadey | 4fd488f73f9f3dcd5188faa8bf28a73c613b6e68de22f644b009cca1eeef36a7

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe

Checks BIOS information in registry 2 TTPs 4 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	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe

Executes dropped EXE 1 IoCs

pid	Process
2672	skotes.exe

Identifies Wine through registry keys 2 TTPs 2 IoCs

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

defense_evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	skotes.exe

Loads dropped DLL 2 IoCs

pid	Process
2856	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe
2856	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
2856	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe
2672	skotes.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2008	powershell.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 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	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2856	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe
2672	skotes.exe
2008	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2008	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2856	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 2672	2856	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe	30
PID 2856 wrote to memory of 2672	2856	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe	30
PID 2856 wrote to memory of 2672	2856	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe	30
PID 2856 wrote to memory of 2672	2856	8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe	30
PID 2672 wrote to memory of 2008	2672	skotes.exe	32
PID 2672 wrote to memory of 2008	2672	skotes.exe	32
PID 2672 wrote to memory of 2008	2672	skotes.exe	32
PID 2672 wrote to memory of 2008	2672	skotes.exe	32

C:\Users\Admin\AppData\Local\Temp\8a1b9f32b1f964f3ba0b4081e5fe9fc4.exe
"C:\Users\Admin\AppData\Local\Temp\8a1b9f32b1f964f3ba0b4081e5fe9fc4.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
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
  "C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe"
  2⤵
  - 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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -executionpolicy remotesigned -File "C:\Users\Admin\AppData\Local\Temp\1072393041\b6V4Rod.ps1"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Query Registry

3

System Information Discovery

2

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

2