amadey | b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplong.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	gdn5yfjd.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	2dee000306.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b491cbdffb.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplong.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	axplong.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\SystemBiosVersion	gdn5yfjd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	2dee000306.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.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\VideoBiosVersion	2dee000306.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	gdn5yfjd.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b491cbdffb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	axplong.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b491cbdffb.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

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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	axplong.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	gdn5yfjd.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.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
948	axplong.exe
4920	gdn5yfjd.exe
1732	2dee000306.exe
4124	b491cbdffb.exe
3324	axplong.exe
540	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-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	axplong.exe
Key opened	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	axplong.exe
Key opened	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe
Key opened	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	axplong.exe
Key opened	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	2dee000306.exe
Key opened	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine	b491cbdffb.exe

Themida packer 4 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/files/0x0007000000023c8d-28.dat	themida
behavioral2/memory/4920-45-0x0000000000400000-0x000000000184E000-memory.dmp	themida
behavioral2/memory/4920-46-0x0000000000400000-0x000000000184E000-memory.dmp	themida
behavioral2/memory/4920-1330-0x0000000000400000-0x000000000184E000-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-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2dee000306.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1001812001\\2dee000306.exe"	axplong.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b491cbdffb.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1001813001\\b491cbdffb.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
440	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe
948	axplong.exe
4920	gdn5yfjd.exe
1732	2dee000306.exe
4124	b491cbdffb.exe
3324	axplong.exe
540	axplong.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4920 set thread context of 3412	4920	gdn5yfjd.exe	105

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\axplong.job	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.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	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	axplong.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gdn5yfjd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2dee000306.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b491cbdffb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
440	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe
440	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe
948	axplong.exe
948	axplong.exe
4920	gdn5yfjd.exe
4920	gdn5yfjd.exe
1732	2dee000306.exe
1732	2dee000306.exe
4124	b491cbdffb.exe
4124	b491cbdffb.exe
1688	powershell.exe
1688	powershell.exe
1688	powershell.exe
3324	axplong.exe
3324	axplong.exe
4920	gdn5yfjd.exe
540	axplong.exe
540	axplong.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	4920	gdn5yfjd.exe
Token: SeDebugPrivilege	1688	powershell.exe
Token: SeDebugPrivilege	4920	gdn5yfjd.exe
Token: SeDebugPrivilege	3412	InstallUtil.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
440	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 440 wrote to memory of 948	440	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe	86
PID 440 wrote to memory of 948	440	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe	86
PID 440 wrote to memory of 948	440	b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe	86
PID 948 wrote to memory of 4920	948	axplong.exe	96
PID 948 wrote to memory of 4920	948	axplong.exe	96
PID 948 wrote to memory of 4920	948	axplong.exe	96
PID 948 wrote to memory of 1732	948	axplong.exe	97
PID 948 wrote to memory of 1732	948	axplong.exe	97
PID 948 wrote to memory of 1732	948	axplong.exe	97
PID 948 wrote to memory of 4124	948	axplong.exe	99
PID 948 wrote to memory of 4124	948	axplong.exe	99
PID 948 wrote to memory of 4124	948	axplong.exe	99
PID 4920 wrote to memory of 1688	4920	gdn5yfjd.exe	100
PID 4920 wrote to memory of 1688	4920	gdn5yfjd.exe	100
PID 4920 wrote to memory of 1688	4920	gdn5yfjd.exe	100
PID 4920 wrote to memory of 3412	4920	gdn5yfjd.exe	105
PID 4920 wrote to memory of 3412	4920	gdn5yfjd.exe	105
PID 4920 wrote to memory of 3412	4920	gdn5yfjd.exe	105
PID 4920 wrote to memory of 3412	4920	gdn5yfjd.exe	105
PID 4920 wrote to memory of 3412	4920	gdn5yfjd.exe	105
PID 4920 wrote to memory of 3412	4920	gdn5yfjd.exe	105
PID 4920 wrote to memory of 3412	4920	gdn5yfjd.exe	105
PID 4920 wrote to memory of 3412	4920	gdn5yfjd.exe	105

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3424
- C:\Users\Admin\AppData\Local\Temp\b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.exe
  "C:\Users\Admin\AppData\Local\Temp\b5801b7b20a9ad7d1acccd19e8dafe93cf131aeed1bc5f2756d6b69048f9dae8.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:440
- - 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:948
  - - 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:4920
    - - 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:1688
  - - C:\Users\Admin\AppData\Local\Temp\1001812001\2dee000306.exe
      "C:\Users\Admin\AppData\Local\Temp\1001812001\2dee000306.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:1732
  - - C:\Users\Admin\AppData\Local\Temp\1001813001\b491cbdffb.exe
      "C:\Users\Admin\AppData\Local\Temp\1001813001\b491cbdffb.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:4124
- 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:3412

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:3324

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:540

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