amadey | 3391ee2bdfbcd96a89f52a9b45d3615923b6214e4f1019b3e5a0f479d8d12627

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\DisableScanOnRealtimeEnable = "1"	8902a6fbdc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection	8902a6fbdc.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	8902a6fbdc.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	8902a6fbdc.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	8902a6fbdc.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	8902a6fbdc.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 7 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	file.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__	c5e1c8960f.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	4b8cb43e15.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	8902a6fbdc.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 14 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	c5e1c8960f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4b8cb43e15.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	document.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	c5e1c8960f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4b8cb43e15.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	8902a6fbdc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	8902a6fbdc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	file.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	document.exe

Executes dropped EXE 6 IoCs

pid	Process
2828	skotes.exe
1916	document.exe
2896	c5e1c8960f.exe
1244	4b8cb43e15.exe
2132	skotes.exe
2092	8902a6fbdc.exe

Identifies Wine through registry keys 2 TTPs 7 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-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	c5e1c8960f.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	4b8cb43e15.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	8902a6fbdc.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	file.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Wine	document.exe

Loads dropped DLL 8 IoCs

pid	Process
2660	file.exe
2828	skotes.exe
2828	skotes.exe
2828	skotes.exe
2828	skotes.exe
2828	skotes.exe
2828	skotes.exe
2828	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	8902a6fbdc.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	8902a6fbdc.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\c5e1c8960f.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004753001\\c5e1c8960f.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	document.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\4b8cb43e15.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004754001\\4b8cb43e15.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\8902a6fbdc.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004756001\\8902a6fbdc.exe"	skotes.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 7 IoCs

pid	Process
2660	file.exe
2828	skotes.exe
1916	document.exe
2896	c5e1c8960f.exe
1244	4b8cb43e15.exe
2132	skotes.exe
2092	8902a6fbdc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2828 set thread context of 2132	2828	skotes.exe	35

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	file.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 7 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	c5e1c8960f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4b8cb43e15.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8902a6fbdc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	document.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1916	document.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2660	file.exe
2828	skotes.exe
1916	document.exe
2896	c5e1c8960f.exe
1916	document.exe
1244	4b8cb43e15.exe
2132	skotes.exe
2092	8902a6fbdc.exe
2092	8902a6fbdc.exe
2092	8902a6fbdc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1916	document.exe
Token: SeDebugPrivilege	2092	8902a6fbdc.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2660	file.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1916	document.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 2660 wrote to memory of 2828	2660	file.exe	29
PID 2660 wrote to memory of 2828	2660	file.exe	29
PID 2660 wrote to memory of 2828	2660	file.exe	29
PID 2660 wrote to memory of 2828	2660	file.exe	29
PID 2828 wrote to memory of 1916	2828	skotes.exe	31
PID 2828 wrote to memory of 1916	2828	skotes.exe	31
PID 2828 wrote to memory of 1916	2828	skotes.exe	31
PID 2828 wrote to memory of 1916	2828	skotes.exe	31
PID 2828 wrote to memory of 2896	2828	skotes.exe	32
PID 2828 wrote to memory of 2896	2828	skotes.exe	32
PID 2828 wrote to memory of 2896	2828	skotes.exe	32
PID 2828 wrote to memory of 2896	2828	skotes.exe	32
PID 2828 wrote to memory of 1244	2828	skotes.exe	34
PID 2828 wrote to memory of 1244	2828	skotes.exe	34
PID 2828 wrote to memory of 1244	2828	skotes.exe	34
PID 2828 wrote to memory of 1244	2828	skotes.exe	34
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2132	2828	skotes.exe	35
PID 2828 wrote to memory of 2092	2828	skotes.exe	36
PID 2828 wrote to memory of 2092	2828	skotes.exe	36
PID 2828 wrote to memory of 2092	2828	skotes.exe	36
PID 2828 wrote to memory of 2092	2828	skotes.exe	36

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.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:2660
- 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:2828
- - 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:1916
- - C:\Users\Admin\AppData\Local\Temp\1004753001\c5e1c8960f.exe
    "C:\Users\Admin\AppData\Local\Temp\1004753001\c5e1c8960f.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:2896
- - C:\Users\Admin\AppData\Local\Temp\1004754001\4b8cb43e15.exe
    "C:\Users\Admin\AppData\Local\Temp\1004754001\4b8cb43e15.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:1244
- - 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:2132
- - C:\Users\Admin\AppData\Local\Temp\1004756001\8902a6fbdc.exe
    "C:\Users\Admin\AppData\Local\Temp\1004756001\8902a6fbdc.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:2092

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