amadey | b50de72b13b1d2d7b06a02187271eeeb681a7e0ad97a4709b092a710787a0c68

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	3d39d.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	4n578o.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	1f64U3.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	2U5577.exe

Checks BIOS information in registry 2 TTPs 12 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	3d39d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4n578o.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	1f64U3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1f64U3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	2U5577.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	2U5577.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3d39d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4n578o.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	1f64U3.exe

Executes dropped EXE 8 IoCs

pid	Process
2788	b7l11.exe
2328	S3w27.exe
1308	1f64U3.exe
996	skotes.exe
4028	skotes.exe
4564	2U5577.exe
3496	3d39d.exe
3788	4n578o.exe

Identifies Wine through registry keys 2 TTPs 6 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-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine	1f64U3.exe
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine	2U5577.exe
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine	3d39d.exe
Key opened	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Software\Wine	4n578o.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	4n578o.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features	4n578o.exe

Adds Run key to start application 2 TTPs 3 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\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	b50de72b13b1d2d7b06a02187271eeeb681a7e0ad97a4709b092a710787a0c68.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup1 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP001.TMP\\\""	b7l11.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup2 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP002.TMP\\\""	S3w27.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
1308	1f64U3.exe
996	skotes.exe
4028	skotes.exe
4564	2U5577.exe
3496	3d39d.exe
3788	4n578o.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	1f64U3.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
1952	4564	WerFault.exe	87
4432	4564	WerFault.exe	87

System Location Discovery: System Language Discovery 1 TTPs 9 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	b50de72b13b1d2d7b06a02187271eeeb681a7e0ad97a4709b092a710787a0c68.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b7l11.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	S3w27.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2U5577.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3d39d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4n578o.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1f64U3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
1308	1f64U3.exe
1308	1f64U3.exe
996	skotes.exe
996	skotes.exe
4028	skotes.exe
4028	skotes.exe
4564	2U5577.exe
4564	2U5577.exe
3496	3d39d.exe
3496	3d39d.exe
3788	4n578o.exe
3788	4n578o.exe
3788	4n578o.exe
3788	4n578o.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3788	4n578o.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1308	1f64U3.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 372 wrote to memory of 2788	372	b50de72b13b1d2d7b06a02187271eeeb681a7e0ad97a4709b092a710787a0c68.exe	82
PID 372 wrote to memory of 2788	372	b50de72b13b1d2d7b06a02187271eeeb681a7e0ad97a4709b092a710787a0c68.exe	82
PID 372 wrote to memory of 2788	372	b50de72b13b1d2d7b06a02187271eeeb681a7e0ad97a4709b092a710787a0c68.exe	82
PID 2788 wrote to memory of 2328	2788	b7l11.exe	83
PID 2788 wrote to memory of 2328	2788	b7l11.exe	83
PID 2788 wrote to memory of 2328	2788	b7l11.exe	83
PID 2328 wrote to memory of 1308	2328	S3w27.exe	84
PID 2328 wrote to memory of 1308	2328	S3w27.exe	84
PID 2328 wrote to memory of 1308	2328	S3w27.exe	84
PID 1308 wrote to memory of 4028	1308	1f64U3.exe	86
PID 1308 wrote to memory of 4028	1308	1f64U3.exe	86
PID 1308 wrote to memory of 4028	1308	1f64U3.exe	86
PID 2328 wrote to memory of 4564	2328	S3w27.exe	87
PID 2328 wrote to memory of 4564	2328	S3w27.exe	87
PID 2328 wrote to memory of 4564	2328	S3w27.exe	87
PID 2788 wrote to memory of 3496	2788	b7l11.exe	96
PID 2788 wrote to memory of 3496	2788	b7l11.exe	96
PID 2788 wrote to memory of 3496	2788	b7l11.exe	96
PID 372 wrote to memory of 3788	372	b50de72b13b1d2d7b06a02187271eeeb681a7e0ad97a4709b092a710787a0c68.exe	98
PID 372 wrote to memory of 3788	372	b50de72b13b1d2d7b06a02187271eeeb681a7e0ad97a4709b092a710787a0c68.exe	98
PID 372 wrote to memory of 3788	372	b50de72b13b1d2d7b06a02187271eeeb681a7e0ad97a4709b092a710787a0c68.exe	98

C:\Users\Admin\AppData\Local\Temp\b50de72b13b1d2d7b06a02187271eeeb681a7e0ad97a4709b092a710787a0c68.exe
"C:\Users\Admin\AppData\Local\Temp\b50de72b13b1d2d7b06a02187271eeeb681a7e0ad97a4709b092a710787a0c68.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:372
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\b7l11.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\b7l11.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\S3w27.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\S3w27.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2328
  - - C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\1f64U3.exe
      C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\1f64U3.exe
      4⤵
      Identifies VirtualBox via ACPI registry values (likely anti-VM)
      Checks BIOS information in registry
      Checks computer location settings
      Executes dropped EXE
      Identifies Wine through registry keys
      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:1308
    - - C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
        
        "C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe"
        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
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:4028
  - - C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\2U5577.exe
      C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\2U5577.exe
      4⤵
      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:4564
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4564 -s 1612
        5⤵
        Program crash
        
        PID:1952
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 4564 -s 1636
        5⤵
        Program crash
        
        PID:4432
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3d39d.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3d39d.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:3496
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\4n578o.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\4n578o.exe
  2⤵
  - Modifies Windows Defender Real-time Protection settings
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Windows security modification
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3788

C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
1⤵
- 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:996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4564 -ip 4564
1⤵
PID:4056

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4564 -ip 4564
1⤵
PID:2296

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify Tools

Modify Registry

Virtualization/Sandbox Evasion

2

Credential Access

Discovery

Query Registry

4

System Information Discovery

3

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion

2