amadey | 3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517

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\DisableOnAccessProtection = "1"	a4d5d5ce8a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	a4d5d5ce8a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	a4d5d5ce8a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	a4d5d5ce8a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	a4d5d5ce8a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	a4d5d5ce8a.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__	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	323725c730.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	422b852156.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	a4d5d5ce8a.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	a4d5d5ce8a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	323725c730.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	422b852156.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	422b852156.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a4d5d5ce8a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	323725c730.exe

Executes dropped EXE 4 IoCs

pid	Process
2600	skotes.exe
484	323725c730.exe
936	422b852156.exe
2552	a4d5d5ce8a.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	a4d5d5ce8a.exe
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	323725c730.exe
Key opened	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine	422b852156.exe

Loads dropped DLL 7 IoCs

pid	Process
2984	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe
2600	skotes.exe
2600	skotes.exe
2600	skotes.exe
2600	skotes.exe
2600	skotes.exe
2600	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	a4d5d5ce8a.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	a4d5d5ce8a.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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\323725c730.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004716001\\323725c730.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\422b852156.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004717001\\422b852156.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\a4d5d5ce8a.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004719001\\a4d5d5ce8a.exe"	skotes.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs

pid	Process
2984	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe
2600	skotes.exe
484	323725c730.exe
936	422b852156.exe
2552	a4d5d5ce8a.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.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	323725c730.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	422b852156.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a4d5d5ce8a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
2984	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe
2600	skotes.exe
484	323725c730.exe
936	422b852156.exe
2552	a4d5d5ce8a.exe
2552	a4d5d5ce8a.exe
2552	a4d5d5ce8a.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2552	a4d5d5ce8a.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2984	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2984 wrote to memory of 2600	2984	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe	30
PID 2984 wrote to memory of 2600	2984	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe	30
PID 2984 wrote to memory of 2600	2984	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe	30
PID 2984 wrote to memory of 2600	2984	3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe	30
PID 2600 wrote to memory of 484	2600	skotes.exe	32
PID 2600 wrote to memory of 484	2600	skotes.exe	32
PID 2600 wrote to memory of 484	2600	skotes.exe	32
PID 2600 wrote to memory of 484	2600	skotes.exe	32
PID 2600 wrote to memory of 936	2600	skotes.exe	34
PID 2600 wrote to memory of 936	2600	skotes.exe	34
PID 2600 wrote to memory of 936	2600	skotes.exe	34
PID 2600 wrote to memory of 936	2600	skotes.exe	34
PID 2600 wrote to memory of 1128	2600	skotes.exe	35
PID 2600 wrote to memory of 1128	2600	skotes.exe	35
PID 2600 wrote to memory of 1128	2600	skotes.exe	35
PID 2600 wrote to memory of 1128	2600	skotes.exe	35
PID 2600 wrote to memory of 2552	2600	skotes.exe	36
PID 2600 wrote to memory of 2552	2600	skotes.exe	36
PID 2600 wrote to memory of 2552	2600	skotes.exe	36
PID 2600 wrote to memory of 2552	2600	skotes.exe	36

C:\Users\Admin\AppData\Local\Temp\3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.exe
"C:\Users\Admin\AppData\Local\Temp\3f9fbe536b0936a67a24bd8a45dfefd831b52d6b51876383e69feb6345d48517N.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:2984
- 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:2600
- - C:\Users\Admin\AppData\Local\Temp\1004716001\323725c730.exe
    "C:\Users\Admin\AppData\Local\Temp\1004716001\323725c730.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:484
- - C:\Users\Admin\AppData\Local\Temp\1004717001\422b852156.exe
    "C:\Users\Admin\AppData\Local\Temp\1004717001\422b852156.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:936
- - C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
    "C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe"
    3⤵
    PID:1128
- - C:\Users\Admin\AppData\Local\Temp\1004719001\a4d5d5ce8a.exe
    "C:\Users\Admin\AppData\Local\Temp\1004719001\a4d5d5ce8a.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:2552

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