amadey | 171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplong.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplong.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplong.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	fee95d6f60.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	gdn5yfjd.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	4ab454a54f.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 14 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	gdn5yfjd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	axplong.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	gdn5yfjd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	axplong.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	axplong.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	axplong.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	axplong.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	fee95d6f60.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	axplong.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4ab454a54f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	fee95d6f60.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4ab454a54f.exe

Checks computer location settings 2 TTPs 3 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	axplong.exe
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	gdn5yfjd.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TypeId.vbs	gdn5yfjd.exe

Executes dropped EXE 6 IoCs

pid	Process
4288	axplong.exe
2572	gdn5yfjd.exe
3720	fee95d6f60.exe
4864	4ab454a54f.exe
4980	axplong.exe
2092	axplong.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-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	axplong.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	fee95d6f60.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	4ab454a54f.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	axplong.exe
Key opened	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Software\Wine	axplong.exe

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/files/0x000800000001e58a-27.dat	themida
behavioral2/memory/2572-62-0x0000000000400000-0x000000000184E000-memory.dmp	themida
behavioral2/memory/2572-63-0x0000000000400000-0x000000000184E000-memory.dmp	themida
behavioral2/memory/2572-1481-0x0000000000400000-0x000000000184E000-memory.dmp	themida

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\fee95d6f60.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1001822001\\fee95d6f60.exe"	axplong.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\4ab454a54f.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1001823001\\4ab454a54f.exe"	axplong.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	gdn5yfjd.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 7 IoCs

pid	Process
4784	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe
4288	axplong.exe
2572	gdn5yfjd.exe
3720	fee95d6f60.exe
4864	4ab454a54f.exe
4980	axplong.exe
2092	axplong.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2572 set thread context of 888	2572	gdn5yfjd.exe	107

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\axplong.job	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.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 7 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	fee95d6f60.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4ab454a54f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	axplong.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gdn5yfjd.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
4784	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe
4784	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe
4288	axplong.exe
4288	axplong.exe
2572	gdn5yfjd.exe
2572	gdn5yfjd.exe
3720	fee95d6f60.exe
3720	fee95d6f60.exe
4864	4ab454a54f.exe
4864	4ab454a54f.exe
4084	powershell.exe
4084	powershell.exe
2572	gdn5yfjd.exe
4980	axplong.exe
4980	axplong.exe
2092	axplong.exe
2092	axplong.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2572	gdn5yfjd.exe
Token: SeDebugPrivilege	4084	powershell.exe
Token: SeDebugPrivilege	2572	gdn5yfjd.exe
Token: SeDebugPrivilege	888	InstallUtil.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4784	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4784 wrote to memory of 4288	4784	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe	87
PID 4784 wrote to memory of 4288	4784	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe	87
PID 4784 wrote to memory of 4288	4784	171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe	87
PID 4288 wrote to memory of 2572	4288	axplong.exe	95
PID 4288 wrote to memory of 2572	4288	axplong.exe	95
PID 4288 wrote to memory of 2572	4288	axplong.exe	95
PID 4288 wrote to memory of 3720	4288	axplong.exe	98
PID 4288 wrote to memory of 3720	4288	axplong.exe	98
PID 4288 wrote to memory of 3720	4288	axplong.exe	98
PID 4288 wrote to memory of 4864	4288	axplong.exe	100
PID 4288 wrote to memory of 4864	4288	axplong.exe	100
PID 4288 wrote to memory of 4864	4288	axplong.exe	100
PID 2572 wrote to memory of 4084	2572	gdn5yfjd.exe	103
PID 2572 wrote to memory of 4084	2572	gdn5yfjd.exe	103
PID 2572 wrote to memory of 4084	2572	gdn5yfjd.exe	103
PID 2572 wrote to memory of 888	2572	gdn5yfjd.exe	107
PID 2572 wrote to memory of 888	2572	gdn5yfjd.exe	107
PID 2572 wrote to memory of 888	2572	gdn5yfjd.exe	107
PID 2572 wrote to memory of 888	2572	gdn5yfjd.exe	107
PID 2572 wrote to memory of 888	2572	gdn5yfjd.exe	107
PID 2572 wrote to memory of 888	2572	gdn5yfjd.exe	107
PID 2572 wrote to memory of 888	2572	gdn5yfjd.exe	107
PID 2572 wrote to memory of 888	2572	gdn5yfjd.exe	107

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3540
- C:\Users\Admin\AppData\Local\Temp\171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe
  "C:\Users\Admin\AppData\Local\Temp\171f4721e91e346af8b0817ccd75f573ab87a65d24f6ec93f8dabe76e7bd80c0N.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Checks computer location settings
  - 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:4784
- - C:\Users\Admin\AppData\Local\Temp\44111dbc49\axplong.exe
    "C:\Users\Admin\AppData\Local\Temp\44111dbc49\axplong.exe"
    3⤵
    - 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
    - Adds Run key to start application
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4288
  - - C:\Users\Admin\AppData\Local\Temp\1001791001\gdn5yfjd.exe
      "C:\Users\Admin\AppData\Local\Temp\1001791001\gdn5yfjd.exe"
      4⤵
      Suspicious use of NtCreateUserProcessOtherParentProcess
      Identifies VirtualBox via ACPI registry values (likely anti-VM)
      Checks BIOS information in registry
      Checks computer location settings
      Drops startup file
      Executes dropped EXE
      Checks whether UAC is enabled
      Suspicious use of NtSetInformationThreadHideFromDebugger
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2572
    - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc 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
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4084
  - - C:\Users\Admin\AppData\Local\Temp\1001822001\fee95d6f60.exe
      "C:\Users\Admin\AppData\Local\Temp\1001822001\fee95d6f60.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:3720
  - - C:\Users\Admin\AppData\Local\Temp\1001823001\4ab454a54f.exe
      "C:\Users\Admin\AppData\Local\Temp\1001823001\4ab454a54f.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:4864
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:888

C:\Users\Admin\AppData\Local\Temp\44111dbc49\axplong.exe
C:\Users\Admin\AppData\Local\Temp\44111dbc49\axplong.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
- Suspicious behavior: EnumeratesProcesses
PID:4980

C:\Users\Admin\AppData\Local\Temp\44111dbc49\axplong.exe
C:\Users\Admin\AppData\Local\Temp\44111dbc49\axplong.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
- Suspicious behavior: EnumeratesProcesses
PID:2092

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

Credential Access

Discovery

Query Registry

System Information Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion