amadey | 016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef

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\DisableRealtimeMonitoring = "1"	85b8b71434.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	85b8b71434.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	85b8b71434.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	85b8b71434.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	85b8b71434.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	85b8b71434.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 5 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	161107f0e8.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	85b8b71434.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	aa781d73cc.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\VideoBiosVersion	aa781d73cc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	161107f0e8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	161107f0e8.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	85b8b71434.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.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\SystemBiosVersion	aa781d73cc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	85b8b71434.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe

Executes dropped EXE 4 IoCs

pid	Process
2672	skotes.exe
2880	aa781d73cc.exe
2236	161107f0e8.exe
1676	85b8b71434.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-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	aa781d73cc.exe
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	161107f0e8.exe
Key opened	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Wine	85b8b71434.exe

Loads dropped DLL 7 IoCs

pid	Process
2336	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe
2672	skotes.exe
2672	skotes.exe
2672	skotes.exe
2672	skotes.exe
2672	skotes.exe
2672	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	85b8b71434.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	85b8b71434.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\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\aa781d73cc.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1005135001\\aa781d73cc.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\161107f0e8.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1005136001\\161107f0e8.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\85b8b71434.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1005138001\\85b8b71434.exe"	skotes.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

pid	Process
2336	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe
2672	skotes.exe
2880	aa781d73cc.exe
2236	161107f0e8.exe
1676	85b8b71434.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.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 5 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	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aa781d73cc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	161107f0e8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	85b8b71434.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2336	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe
2672	skotes.exe
2880	aa781d73cc.exe
2236	161107f0e8.exe
1676	85b8b71434.exe
1676	85b8b71434.exe
1676	85b8b71434.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1676	85b8b71434.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2336	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2336 wrote to memory of 2672	2336	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe	30
PID 2336 wrote to memory of 2672	2336	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe	30
PID 2336 wrote to memory of 2672	2336	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe	30
PID 2336 wrote to memory of 2672	2336	016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe	30
PID 2672 wrote to memory of 2880	2672	skotes.exe	33
PID 2672 wrote to memory of 2880	2672	skotes.exe	33
PID 2672 wrote to memory of 2880	2672	skotes.exe	33
PID 2672 wrote to memory of 2880	2672	skotes.exe	33
PID 2672 wrote to memory of 2236	2672	skotes.exe	34
PID 2672 wrote to memory of 2236	2672	skotes.exe	34
PID 2672 wrote to memory of 2236	2672	skotes.exe	34
PID 2672 wrote to memory of 2236	2672	skotes.exe	34
PID 2672 wrote to memory of 852	2672	skotes.exe	35
PID 2672 wrote to memory of 852	2672	skotes.exe	35
PID 2672 wrote to memory of 852	2672	skotes.exe	35
PID 2672 wrote to memory of 852	2672	skotes.exe	35
PID 2672 wrote to memory of 1676	2672	skotes.exe	36
PID 2672 wrote to memory of 1676	2672	skotes.exe	36
PID 2672 wrote to memory of 1676	2672	skotes.exe	36
PID 2672 wrote to memory of 1676	2672	skotes.exe	36

C:\Users\Admin\AppData\Local\Temp\016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.exe
"C:\Users\Admin\AppData\Local\Temp\016d36bc0fc84ddd2b2a8ddb833f29cd3e27292f6fa5e9bc03af9f3e618ff0ef.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:2336
- 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
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2672
- - C:\Users\Admin\AppData\Local\Temp\1005135001\aa781d73cc.exe
    "C:\Users\Admin\AppData\Local\Temp\1005135001\aa781d73cc.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:2880
- - C:\Users\Admin\AppData\Local\Temp\1005136001\161107f0e8.exe
    "C:\Users\Admin\AppData\Local\Temp\1005136001\161107f0e8.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:2236
- - C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
    "C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe"
    3⤵
    PID:852
- - C:\Users\Admin\AppData\Local\Temp\1005138001\85b8b71434.exe
    "C:\Users\Admin\AppData\Local\Temp\1005138001\85b8b71434.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:1676

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