amadey | f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da

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\DisableIOAVProtection = "1"	a10e4a5cf3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	a10e4a5cf3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	a10e4a5cf3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	a10e4a5cf3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	a10e4a5cf3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	a10e4a5cf3.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__	a10e4a5cf3.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	c91a112bcf.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	d761a3754b.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	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	d761a3754b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	d761a3754b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	a10e4a5cf3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a10e4a5cf3.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	c91a112bcf.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c91a112bcf.exe

Executes dropped EXE 4 IoCs

pid	Process
2808	skotes.exe
1616	c91a112bcf.exe
2328	d761a3754b.exe
2448	a10e4a5cf3.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.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	c91a112bcf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	d761a3754b.exe
Key opened	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Wine	a10e4a5cf3.exe

Loads dropped DLL 7 IoCs

pid	Process
2364	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe
2808	skotes.exe
2808	skotes.exe
2808	skotes.exe
2808	skotes.exe
2808	skotes.exe
2808	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	a10e4a5cf3.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	a10e4a5cf3.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\c91a112bcf.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004516001\\c91a112bcf.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\d761a3754b.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004517001\\d761a3754b.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\a10e4a5cf3.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004519001\\a10e4a5cf3.exe"	skotes.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

pid	Process
2364	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe
2808	skotes.exe
1616	c91a112bcf.exe
2328	d761a3754b.exe
2448	a10e4a5cf3.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.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	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c91a112bcf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d761a3754b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a10e4a5cf3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2364	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe
2808	skotes.exe
1616	c91a112bcf.exe
2328	d761a3754b.exe
2448	a10e4a5cf3.exe
2448	a10e4a5cf3.exe
2448	a10e4a5cf3.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2448	a10e4a5cf3.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2364	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2808	2364	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe	30
PID 2364 wrote to memory of 2808	2364	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe	30
PID 2364 wrote to memory of 2808	2364	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe	30
PID 2364 wrote to memory of 2808	2364	f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe	30
PID 2808 wrote to memory of 1616	2808	skotes.exe	32
PID 2808 wrote to memory of 1616	2808	skotes.exe	32
PID 2808 wrote to memory of 1616	2808	skotes.exe	32
PID 2808 wrote to memory of 1616	2808	skotes.exe	32
PID 2808 wrote to memory of 2328	2808	skotes.exe	34
PID 2808 wrote to memory of 2328	2808	skotes.exe	34
PID 2808 wrote to memory of 2328	2808	skotes.exe	34
PID 2808 wrote to memory of 2328	2808	skotes.exe	34
PID 2808 wrote to memory of 1852	2808	skotes.exe	35
PID 2808 wrote to memory of 1852	2808	skotes.exe	35
PID 2808 wrote to memory of 1852	2808	skotes.exe	35
PID 2808 wrote to memory of 1852	2808	skotes.exe	35
PID 2808 wrote to memory of 2448	2808	skotes.exe	36
PID 2808 wrote to memory of 2448	2808	skotes.exe	36
PID 2808 wrote to memory of 2448	2808	skotes.exe	36
PID 2808 wrote to memory of 2448	2808	skotes.exe	36

C:\Users\Admin\AppData\Local\Temp\f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.exe
"C:\Users\Admin\AppData\Local\Temp\f73114dbc6d06d6a2e8817d0a066b6b2e91846bbb137f847d440b4ce139f18da.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:2364
- 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:2808
- - C:\Users\Admin\AppData\Local\Temp\1004516001\c91a112bcf.exe
    "C:\Users\Admin\AppData\Local\Temp\1004516001\c91a112bcf.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:1616
- - C:\Users\Admin\AppData\Local\Temp\1004517001\d761a3754b.exe
    "C:\Users\Admin\AppData\Local\Temp\1004517001\d761a3754b.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:2328
- - C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
    "C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe"
    3⤵
    PID:1852
- - C:\Users\Admin\AppData\Local\Temp\1004519001\a10e4a5cf3.exe
    "C:\Users\Admin\AppData\Local\Temp\1004519001\a10e4a5cf3.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:2448

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