amadey | 4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	bc2d0593c0.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	bc2d0593c0.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	bc2d0593c0.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	bc2d0593c0.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	bc2d0593c0.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	bc2d0593c0.exe

Stealc
Stealc is an infostealer written in C++.
stealer stealc
Stealc family
stealc
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 6 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	bc2d0593c0.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	document.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	1f138241fb.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	4df5e8aace.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 12 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	4df5e8aace.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	bc2d0593c0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	document.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	document.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1f138241fb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4df5e8aace.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.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	1f138241fb.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	bc2d0593c0.exe

Executes dropped EXE 5 IoCs

pid	Process
2116	skotes.exe
1152	document.exe
1116	1f138241fb.exe
1176	4df5e8aace.exe
2228	bc2d0593c0.exe

Identifies Wine through registry keys 2 TTPs 6 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-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine	document.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine	1f138241fb.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine	4df5e8aace.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine	bc2d0593c0.exe
Key opened	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Wine	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe

Loads dropped DLL 8 IoCs

pid	Process
1884	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe
2116	skotes.exe
2116	skotes.exe
2116	skotes.exe
2116	skotes.exe
2116	skotes.exe
2116	skotes.exe
2116	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	bc2d0593c0.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	bc2d0593c0.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\4df5e8aace.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004742001\\4df5e8aace.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\bc2d0593c0.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004744001\\bc2d0593c0.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	document.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\1f138241fb.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004741001\\1f138241fb.exe"	skotes.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs

pid	Process
1884	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe
2116	skotes.exe
1152	document.exe
1116	1f138241fb.exe
1176	4df5e8aace.exe
2228	bc2d0593c0.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.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 6 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	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	document.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1f138241fb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4df5e8aace.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bc2d0593c0.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1152	document.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1884	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe
2116	skotes.exe
1152	document.exe
1152	document.exe
1116	1f138241fb.exe
1176	4df5e8aace.exe
2228	bc2d0593c0.exe
2228	bc2d0593c0.exe
2228	bc2d0593c0.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1152	document.exe
Token: SeDebugPrivilege	2228	bc2d0593c0.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1884	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1152	document.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 2116	1884	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe	30
PID 1884 wrote to memory of 2116	1884	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe	30
PID 1884 wrote to memory of 2116	1884	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe	30
PID 1884 wrote to memory of 2116	1884	4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe	30
PID 2116 wrote to memory of 1152	2116	skotes.exe	32
PID 2116 wrote to memory of 1152	2116	skotes.exe	32
PID 2116 wrote to memory of 1152	2116	skotes.exe	32
PID 2116 wrote to memory of 1152	2116	skotes.exe	32
PID 2116 wrote to memory of 1116	2116	skotes.exe	33
PID 2116 wrote to memory of 1116	2116	skotes.exe	33
PID 2116 wrote to memory of 1116	2116	skotes.exe	33
PID 2116 wrote to memory of 1116	2116	skotes.exe	33
PID 2116 wrote to memory of 1176	2116	skotes.exe	35
PID 2116 wrote to memory of 1176	2116	skotes.exe	35
PID 2116 wrote to memory of 1176	2116	skotes.exe	35
PID 2116 wrote to memory of 1176	2116	skotes.exe	35
PID 2116 wrote to memory of 1392	2116	skotes.exe	36
PID 2116 wrote to memory of 1392	2116	skotes.exe	36
PID 2116 wrote to memory of 1392	2116	skotes.exe	36
PID 2116 wrote to memory of 1392	2116	skotes.exe	36
PID 2116 wrote to memory of 2228	2116	skotes.exe	37
PID 2116 wrote to memory of 2228	2116	skotes.exe	37
PID 2116 wrote to memory of 2228	2116	skotes.exe	37
PID 2116 wrote to memory of 2228	2116	skotes.exe	37

C:\Users\Admin\AppData\Local\Temp\4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.exe
"C:\Users\Admin\AppData\Local\Temp\4fd23d69b2914cc01daacd0835d9f100a20ec884e48a906d73b4935eb9b9a4b9.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:1884
- 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:2116
- - C:\Users\Admin\AppData\Local\Temp\1004732001\document.exe
    "C:\Users\Admin\AppData\Local\Temp\1004732001\document.exe"
    3⤵
    - 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: AddClipboardFormatListener
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1152
- - C:\Users\Admin\AppData\Local\Temp\1004741001\1f138241fb.exe
    "C:\Users\Admin\AppData\Local\Temp\1004741001\1f138241fb.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:1116
- - C:\Users\Admin\AppData\Local\Temp\1004742001\4df5e8aace.exe
    "C:\Users\Admin\AppData\Local\Temp\1004742001\4df5e8aace.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:1176
- - C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
    "C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe"
    3⤵
    PID:1392
- - C:\Users\Admin\AppData\Local\Temp\1004744001\bc2d0593c0.exe
    "C:\Users\Admin\AppData\Local\Temp\1004744001\bc2d0593c0.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:2228

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