amadey | 73fe0d9ff9d49c8d01efae4d405d824849821bc5a310929603d73db3b91ed214

Windows Service

Disable or Modify Tools

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\DisableAntiSpyware = "1"	4c441t.exe

Modifies Windows Defender Real-time Protection settings 3 TTPs 6 IoCs

defense_evasion trojan

Modify Registry

Windows Service

Disable or Modify Tools

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	4c441t.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	4c441t.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	4c441t.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	4c441t.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	4c441t.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	4c441t.exe

Modifies Windows Defender TamperProtection settings 3 TTPs 1 IoCs

evasion trojan

Modify Registry

Windows Service

Disable or Modify Tools

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	4c441t.exe

Modifies Windows Defender notification settings 3 TTPs 2 IoCs

defense_evasion trojan

Windows Service

Modify Registry

Disable or Modify Tools

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender Security Center\Notifications	4c441t.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender Security Center\Notifications\DisableNotifications = "1"	4c441t.exe

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 7 IoCs

defense_evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	4c441t.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	1s85b9.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	2u1258.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	3F46L.exe

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	1s85b9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	2u1258.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\SystemBiosVersion	2u1258.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	3F46L.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3F46L.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	1s85b9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4c441t.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4c441t.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	1s85b9.exe

Executes dropped EXE 9 IoCs

pid	Process
2560	V3Z16.exe
1180	V8h55.exe
4700	1s85b9.exe
1968	skotes.exe
964	2u1258.exe
8	3F46L.exe
4488	skotes.exe
2972	4c441t.exe
4380	skotes.exe

Identifies Wine through registry keys 2 TTPs 7 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

defense_evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	4c441t.exe
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	1s85b9.exe
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	2u1258.exe
Key opened	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Software\Wine	3F46L.exe

Windows security modification 2 TTPs 2 IoCs

defense_evasion trojan

Disable or Modify Tools

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features	4c441t.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	4c441t.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

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\\\""	73fe0d9ff9d49c8d01efae4d405d824849821bc5a310929603d73db3b91ed214.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\\\""	V3Z16.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\\\""	V8h55.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 7 IoCs

pid	Process
4700	1s85b9.exe
1968	skotes.exe
964	2u1258.exe
8	3F46L.exe
4488	skotes.exe
2972	4c441t.exe
4380	skotes.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	1s85b9.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4356	8	WerFault.exe	87

System Location Discovery: System Language Discovery 1 TTPs 8 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	4c441t.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	73fe0d9ff9d49c8d01efae4d405d824849821bc5a310929603d73db3b91ed214.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	V3Z16.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	V8h55.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1s85b9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2u1258.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3F46L.exe

Checks processor information in registry 2 TTPs 2 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	3F46L.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	3F46L.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
4700	1s85b9.exe
4700	1s85b9.exe
1968	skotes.exe
1968	skotes.exe
964	2u1258.exe
964	2u1258.exe
8	3F46L.exe
8	3F46L.exe
8	3F46L.exe
8	3F46L.exe
4488	skotes.exe
4488	skotes.exe
2972	4c441t.exe
2972	4c441t.exe
2972	4c441t.exe
2972	4c441t.exe
4380	skotes.exe
4380	skotes.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2972	4c441t.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4700	1s85b9.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 4584 wrote to memory of 2560	4584	73fe0d9ff9d49c8d01efae4d405d824849821bc5a310929603d73db3b91ed214.exe	82
PID 4584 wrote to memory of 2560	4584	73fe0d9ff9d49c8d01efae4d405d824849821bc5a310929603d73db3b91ed214.exe	82
PID 4584 wrote to memory of 2560	4584	73fe0d9ff9d49c8d01efae4d405d824849821bc5a310929603d73db3b91ed214.exe	82
PID 2560 wrote to memory of 1180	2560	V3Z16.exe	83
PID 2560 wrote to memory of 1180	2560	V3Z16.exe	83
PID 2560 wrote to memory of 1180	2560	V3Z16.exe	83
PID 1180 wrote to memory of 4700	1180	V8h55.exe	84
PID 1180 wrote to memory of 4700	1180	V8h55.exe	84
PID 1180 wrote to memory of 4700	1180	V8h55.exe	84
PID 4700 wrote to memory of 1968	4700	1s85b9.exe	85
PID 4700 wrote to memory of 1968	4700	1s85b9.exe	85
PID 4700 wrote to memory of 1968	4700	1s85b9.exe	85
PID 1180 wrote to memory of 964	1180	V8h55.exe	86
PID 1180 wrote to memory of 964	1180	V8h55.exe	86
PID 1180 wrote to memory of 964	1180	V8h55.exe	86
PID 2560 wrote to memory of 8	2560	V3Z16.exe	87
PID 2560 wrote to memory of 8	2560	V3Z16.exe	87
PID 2560 wrote to memory of 8	2560	V3Z16.exe	87
PID 4584 wrote to memory of 2972	4584	73fe0d9ff9d49c8d01efae4d405d824849821bc5a310929603d73db3b91ed214.exe	101
PID 4584 wrote to memory of 2972	4584	73fe0d9ff9d49c8d01efae4d405d824849821bc5a310929603d73db3b91ed214.exe	101
PID 4584 wrote to memory of 2972	4584	73fe0d9ff9d49c8d01efae4d405d824849821bc5a310929603d73db3b91ed214.exe	101

C:\Users\Admin\AppData\Local\Temp\73fe0d9ff9d49c8d01efae4d405d824849821bc5a310929603d73db3b91ed214.exe
"C:\Users\Admin\AppData\Local\Temp\73fe0d9ff9d49c8d01efae4d405d824849821bc5a310929603d73db3b91ed214.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4584
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\V3Z16.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\V3Z16.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2560
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\V8h55.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\V8h55.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1180
  - - C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\1s85b9.exe
      C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\1s85b9.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:4700
    - - 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:1968
  - - C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\2u1258.exe
      C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\2u1258.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:964
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3F46L.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3F46L.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
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:8
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 8 -s 1468
      4⤵
      Program crash
      PID:4356
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\4c441t.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\4c441t.exe
  2⤵
  - Modifies Windows Defender DisableAntiSpyware settings
  - Modifies Windows Defender Real-time Protection settings
  - Modifies Windows Defender TamperProtection settings
  - Modifies Windows Defender notification 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:2972

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:4488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 8 -ip 8
1⤵
PID:380

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:4380

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

Defense Evasion

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion