amadey | e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.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__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 10 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	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.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\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	skotes.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	MSBuild.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	MSBuild.exe

Executes dropped EXE 12 IoCs

pid	Process
5084	skotes.exe
832	xwo.exe
2792	skotes.exe
2868	XClient.exe
932	mwarvn.exe
3472	mwarvn.exe
2652	reunrj.exe
2444	foksdes.exe
2196	skotes.exe
1952	XClient.exe
2728	skotes.exe
4144	XClient.exe

Identifies Wine through registry keys 2 TTPs 5 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-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	skotes.exe

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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\XClient.exe"	MSBuild.exe
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\\\""	reunrj.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

pid	Process
212	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe
5084	skotes.exe
2792	skotes.exe
2196	skotes.exe
2728	skotes.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 832 set thread context of 4928	832	xwo.exe	100
PID 932 set thread context of 3472	932	mwarvn.exe	112

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe

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

System Information Discovery
T1082

Program crash 3 IoCs

pid	pid_target	Process	procid_target
3800	832	WerFault.exe	95
2936	932	WerFault.exe	110
808	2444	WerFault.exe	122

System Location Discovery: System Language Discovery 1 TTPs 13 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	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	MSBuild.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	XClient.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mwarvn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	XClient.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xwo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mwarvn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reunrj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	foksdes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	XClient.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
1744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
212	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe
212	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe
5084	skotes.exe
5084	skotes.exe
2792	skotes.exe
2792	skotes.exe
2444	foksdes.exe
2444	foksdes.exe
2444	foksdes.exe
2444	foksdes.exe
2196	skotes.exe
2196	skotes.exe
2728	skotes.exe
2728	skotes.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4928	MSBuild.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
212	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 212 wrote to memory of 5084	212	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe	87
PID 212 wrote to memory of 5084	212	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe	87
PID 212 wrote to memory of 5084	212	e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe	87
PID 5084 wrote to memory of 832	5084	skotes.exe	95
PID 5084 wrote to memory of 832	5084	skotes.exe	95
PID 5084 wrote to memory of 832	5084	skotes.exe	95
PID 832 wrote to memory of 4928	832	xwo.exe	100
PID 832 wrote to memory of 4928	832	xwo.exe	100
PID 832 wrote to memory of 4928	832	xwo.exe	100
PID 832 wrote to memory of 4928	832	xwo.exe	100
PID 832 wrote to memory of 4928	832	xwo.exe	100
PID 832 wrote to memory of 4928	832	xwo.exe	100
PID 832 wrote to memory of 4928	832	xwo.exe	100
PID 832 wrote to memory of 4928	832	xwo.exe	100
PID 4928 wrote to memory of 1744	4928	MSBuild.exe	104
PID 4928 wrote to memory of 1744	4928	MSBuild.exe	104
PID 4928 wrote to memory of 1744	4928	MSBuild.exe	104
PID 4928 wrote to memory of 932	4928	MSBuild.exe	110
PID 4928 wrote to memory of 932	4928	MSBuild.exe	110
PID 4928 wrote to memory of 932	4928	MSBuild.exe	110
PID 932 wrote to memory of 3472	932	mwarvn.exe	112
PID 932 wrote to memory of 3472	932	mwarvn.exe	112
PID 932 wrote to memory of 3472	932	mwarvn.exe	112
PID 932 wrote to memory of 3472	932	mwarvn.exe	112
PID 932 wrote to memory of 3472	932	mwarvn.exe	112
PID 932 wrote to memory of 3472	932	mwarvn.exe	112
PID 932 wrote to memory of 3472	932	mwarvn.exe	112
PID 932 wrote to memory of 3472	932	mwarvn.exe	112
PID 932 wrote to memory of 3472	932	mwarvn.exe	112
PID 4928 wrote to memory of 2652	4928	MSBuild.exe	119
PID 4928 wrote to memory of 2652	4928	MSBuild.exe	119
PID 4928 wrote to memory of 2652	4928	MSBuild.exe	119
PID 2652 wrote to memory of 2788	2652	reunrj.exe	120
PID 2652 wrote to memory of 2788	2652	reunrj.exe	120
PID 2652 wrote to memory of 2788	2652	reunrj.exe	120
PID 2788 wrote to memory of 2444	2788	cmd.exe	122
PID 2788 wrote to memory of 2444	2788	cmd.exe	122
PID 2788 wrote to memory of 2444	2788	cmd.exe	122

C:\Users\Admin\AppData\Local\Temp\e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe
"C:\Users\Admin\AppData\Local\Temp\e986cb9fe1972e182d40c74084694aeb72c2433ff71e5cf68d3041c87c0c6718.exe"
1⤵
- 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:212
- 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
  - Checks computer location settings
  - 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:5084
- - C:\Users\Admin\AppData\Local\Temp\1004256001\xwo.exe
    "C:\Users\Admin\AppData\Local\Temp\1004256001\xwo.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:832
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      4⤵
      Drops startup file
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4928
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\XClient.exe"
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:1744
    - - C:\Users\Admin\AppData\Local\Temp\mwarvn.exe
        
        "C:\Users\Admin\AppData\Local\Temp\mwarvn.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:932
      - C:\Users\Admin\AppData\Local\Temp\mwarvn.exe
        
        "C:\Users\Admin\AppData\Local\Temp\mwarvn.exe"
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:3472
      - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 932 -s 276
        6⤵
        Program crash
        
        PID:2936
    - - C:\Users\Admin\AppData\Local\Temp\reunrj.exe
        
        "C:\Users\Admin\AppData\Local\Temp\reunrj.exe"
        5⤵
        Executes dropped EXE
        Adds Run key to start application
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2652
      - C:\Windows\SysWOW64\cmd.exe
        
        cmd.exe /d /c blxfpmth.bat 2733965598
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:2788
        
        C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\foksdes.exe
        
        foksdes.exe ltkqnerwt.nuts 2733965598
        7⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        
        PID:2444
        
        C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2444 -s 1292
        8⤵
        Program crash
        
        PID:808
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 832 -s 288
      4⤵
      Program crash
      PID:3800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 832 -ip 832
1⤵
PID:2020

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
- Suspicious behavior: EnumeratesProcesses
PID:2792

C:\Users\Admin\XClient.exe
C:\Users\Admin\XClient.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 932 -ip 932
1⤵
PID:684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2444 -ip 2444
1⤵
PID:1200

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
- Suspicious behavior: EnumeratesProcesses
PID:2196

C:\Users\Admin\XClient.exe
C:\Users\Admin\XClient.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1952

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
- Suspicious behavior: EnumeratesProcesses
PID:2728

C:\Users\Admin\XClient.exe
C:\Users\Admin\XClient.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4144

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion