amadey | d3a80f61dbaca8dcea50c0c87bf8bc39ab4d725ed2587206bfa7e62de7278c9c

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	file.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b8d7db192a.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 6 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	b8d7db192a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b8d7db192a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	file.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 4 IoCs

pid	Process
2276	skotes.exe
2456	DLER214.exe
2948	DLER214.exe
1916	b8d7db192a.exe

Identifies Wine through registry keys 2 TTPs 3 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-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	file.exe
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine	b8d7db192a.exe

Loads dropped DLL 15 IoCs

pid	Process
2524	file.exe
2276	skotes.exe
692	WerFault.exe
692	WerFault.exe
692	WerFault.exe
692	WerFault.exe
692	WerFault.exe
2276	skotes.exe
1500	WerFault.exe
1500	WerFault.exe
1500	WerFault.exe
1500	WerFault.exe
1500	WerFault.exe
2276	skotes.exe
2276	skotes.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Microsoft\Windows\CurrentVersion\Run\b8d7db192a.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004091001\\b8d7db192a.exe"	skotes.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
2524	file.exe
2276	skotes.exe
1916	b8d7db192a.exe

Drops file in Windows directory 1 IoCs

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

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
692	2456	WerFault.exe	33
1500	2948	WerFault.exe	35

System Location Discovery: System Language Discovery 1 TTPs 5 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	DLER214.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b8d7db192a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DLER214.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2524	file.exe
2276	skotes.exe
1916	b8d7db192a.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2456	DLER214.exe
Token: SeDebugPrivilege	2948	DLER214.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2524	file.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 2276	2524	file.exe	30
PID 2524 wrote to memory of 2276	2524	file.exe	30
PID 2524 wrote to memory of 2276	2524	file.exe	30
PID 2524 wrote to memory of 2276	2524	file.exe	30
PID 2276 wrote to memory of 2456	2276	skotes.exe	33
PID 2276 wrote to memory of 2456	2276	skotes.exe	33
PID 2276 wrote to memory of 2456	2276	skotes.exe	33
PID 2276 wrote to memory of 2456	2276	skotes.exe	33
PID 2456 wrote to memory of 692	2456	DLER214.exe	34
PID 2456 wrote to memory of 692	2456	DLER214.exe	34
PID 2456 wrote to memory of 692	2456	DLER214.exe	34
PID 2456 wrote to memory of 692	2456	DLER214.exe	34
PID 2276 wrote to memory of 2948	2276	skotes.exe	35
PID 2276 wrote to memory of 2948	2276	skotes.exe	35
PID 2276 wrote to memory of 2948	2276	skotes.exe	35
PID 2276 wrote to memory of 2948	2276	skotes.exe	35
PID 2948 wrote to memory of 1500	2948	DLER214.exe	36
PID 2948 wrote to memory of 1500	2948	DLER214.exe	36
PID 2948 wrote to memory of 1500	2948	DLER214.exe	36
PID 2948 wrote to memory of 1500	2948	DLER214.exe	36
PID 2276 wrote to memory of 1916	2276	skotes.exe	37
PID 2276 wrote to memory of 1916	2276	skotes.exe	37
PID 2276 wrote to memory of 1916	2276	skotes.exe	37
PID 2276 wrote to memory of 1916	2276	skotes.exe	37

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.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:2524
- 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
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2276
- - C:\Users\Admin\AppData\Local\Temp\1004053001\DLER214.exe
    "C:\Users\Admin\AppData\Local\Temp\1004053001\DLER214.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2456
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2456 -s 1072
      4⤵
      Loads dropped DLL
      Program crash
      PID:692
- - C:\Users\Admin\AppData\Local\Temp\1004090001\DLER214.exe
    "C:\Users\Admin\AppData\Local\Temp\1004090001\DLER214.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2948
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2948 -s 1076
      4⤵
      Loads dropped DLL
      Program crash
      PID:1500
- - C:\Users\Admin\AppData\Local\Temp\1004091001\b8d7db192a.exe
    "C:\Users\Admin\AppData\Local\Temp\1004091001\b8d7db192a.exe"
    3⤵
    - 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
    PID:1916

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

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