amadey | 01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	42caa0d530.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	42caa0d530.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	42caa0d530.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	42caa0d530.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	42caa0d530.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	42caa0d530.exe

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Remcos family
remcos
Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 8 IoCs

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__	42caa0d530.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	remcos_a.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	remcos.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	8740e5d4ce.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	c1d411d563.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 16 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\VideoBiosVersion	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	c1d411d563.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	remcos_a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	remcos_a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	8740e5d4ce.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	42caa0d530.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	remcos.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c1d411d563.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	remcos.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	8740e5d4ce.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	42caa0d530.exe

Executes dropped EXE 7 IoCs

pid	Process
1832	skotes.exe
584	remcos_a.exe
2004	remcos.exe
592	8740e5d4ce.exe
2432	c1d411d563.exe
1972	skotes.exe
2920	42caa0d530.exe

Identifies Wine through registry keys 2 TTPs 8 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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	remcos_a.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	remcos.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	8740e5d4ce.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	c1d411d563.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	42caa0d530.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	skotes.exe

Loads dropped DLL 11 IoCs

pid	Process
1684	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe
1832	skotes.exe
1832	skotes.exe
584	remcos_a.exe
584	remcos_a.exe
1832	skotes.exe
1832	skotes.exe
1832	skotes.exe
1832	skotes.exe
1832	skotes.exe
1832	skotes.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features	42caa0d530.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	42caa0d530.exe

Adds Run key to start application 2 TTPs 7 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\c1d411d563.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004501001\\c1d411d563.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\42caa0d530.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004503001\\42caa0d530.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-A34JIZ = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos_a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-A34JIZ = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos_a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-A34JIZ = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-A34JIZ = "\"C:\\ProgramData\\Remcos\\remcos.exe\""	remcos.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\8740e5d4ce.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004500001\\8740e5d4ce.exe"	skotes.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 8 IoCs

pid	Process
1684	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe
1832	skotes.exe
584	remcos_a.exe
2004	remcos.exe
592	8740e5d4ce.exe
2432	c1d411d563.exe
1972	skotes.exe
2920	42caa0d530.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1832 set thread context of 1972	1832	skotes.exe	38

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.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 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	8740e5d4ce.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1d411d563.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	42caa0d530.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos_a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	remcos.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1684	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe
1832	skotes.exe
584	remcos_a.exe
2004	remcos.exe
592	8740e5d4ce.exe
2432	c1d411d563.exe
1972	skotes.exe
2920	42caa0d530.exe
2920	42caa0d530.exe
2920	42caa0d530.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2920	42caa0d530.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1684	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2004	remcos.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1684 wrote to memory of 1832	1684	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe	30
PID 1684 wrote to memory of 1832	1684	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe	30
PID 1684 wrote to memory of 1832	1684	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe	30
PID 1684 wrote to memory of 1832	1684	01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe	30
PID 1832 wrote to memory of 584	1832	skotes.exe	32
PID 1832 wrote to memory of 584	1832	skotes.exe	32
PID 1832 wrote to memory of 584	1832	skotes.exe	32
PID 1832 wrote to memory of 584	1832	skotes.exe	32
PID 584 wrote to memory of 2004	584	remcos_a.exe	33
PID 584 wrote to memory of 2004	584	remcos_a.exe	33
PID 584 wrote to memory of 2004	584	remcos_a.exe	33
PID 584 wrote to memory of 2004	584	remcos_a.exe	33
PID 1832 wrote to memory of 592	1832	skotes.exe	34
PID 1832 wrote to memory of 592	1832	skotes.exe	34
PID 1832 wrote to memory of 592	1832	skotes.exe	34
PID 1832 wrote to memory of 592	1832	skotes.exe	34
PID 1832 wrote to memory of 2432	1832	skotes.exe	37
PID 1832 wrote to memory of 2432	1832	skotes.exe	37
PID 1832 wrote to memory of 2432	1832	skotes.exe	37
PID 1832 wrote to memory of 2432	1832	skotes.exe	37
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 1972	1832	skotes.exe	38
PID 1832 wrote to memory of 2920	1832	skotes.exe	39
PID 1832 wrote to memory of 2920	1832	skotes.exe	39
PID 1832 wrote to memory of 2920	1832	skotes.exe	39
PID 1832 wrote to memory of 2920	1832	skotes.exe	39

C:\Users\Admin\AppData\Local\Temp\01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe
"C:\Users\Admin\AppData\Local\Temp\01022e210af142ecdfb8f85212aa90f39e1fe326a56e3e9c9ae53ef147b23547.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- 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:1684
- 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
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1832
- - C:\Users\Admin\AppData\Local\Temp\1004494001\remcos_a.exe
    "C:\Users\Admin\AppData\Local\Temp\1004494001\remcos_a.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Checks BIOS information in registry
    - Executes dropped EXE
    - Identifies Wine through registry keys
    - Loads dropped DLL
    - Adds Run key to start application
    - Suspicious use of NtSetInformationThreadHideFromDebugger
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:584
  - - C:\ProgramData\Remcos\remcos.exe
      "C:\ProgramData\Remcos\remcos.exe"
      4⤵
      Identifies VirtualBox via ACPI registry values (likely anti-VM)
      Checks BIOS information in registry
      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 SetWindowsHookEx
      PID:2004
- - C:\Users\Admin\AppData\Local\Temp\1004500001\8740e5d4ce.exe
    "C:\Users\Admin\AppData\Local\Temp\1004500001\8740e5d4ce.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:592
- - C:\Users\Admin\AppData\Local\Temp\1004501001\c1d411d563.exe
    "C:\Users\Admin\AppData\Local\Temp\1004501001\c1d411d563.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:2432
- - C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
    "C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.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:1972
- - C:\Users\Admin\AppData\Local\Temp\1004503001\42caa0d530.exe
    "C:\Users\Admin\AppData\Local\Temp\1004503001\42caa0d530.exe"
    3⤵
    - 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:2920

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

T1562

Disable or Modify Tools

T1562.001

Modify Registry

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion