amadey | 69321782fa34fd498bdeec1689406544090465f528a2f3529326c85c612e444f

Windows Service

T1543.003

Disable or Modify Tools

T1562.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection	b04539ed47.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1"	b04539ed47.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1"	b04539ed47.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1"	b04539ed47.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1"	b04539ed47.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1"	b04539ed47.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 9 IoCs

evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	2S3134.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	42bba44f99.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	b04539ed47.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	a8e3fd301f.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	3H33Q.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	4Y209P.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe

Downloads MZ/PE file

Checks BIOS information in registry 2 TTPs 18 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	3H33Q.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3H33Q.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	42bba44f99.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\VideoBiosVersion	2S3134.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	4Y209P.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	a8e3fd301f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	b04539ed47.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	2S3134.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	a8e3fd301f.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	42bba44f99.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	4Y209P.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	b04539ed47.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	4Y209P.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	skotes.exe

Executes dropped EXE 10 IoCs

pid	Process
1580	R2L54.exe
4680	2S3134.exe
3932	3H33Q.exe
1016	4Y209P.exe
4008	skotes.exe
2820	a8e3fd301f.exe
3444	42bba44f99.exe
1956	b04539ed47.exe
4080	skotes.exe
4384	skotes.exe

Identifies Wine through registry keys 2 TTPs 9 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-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	3H33Q.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	a8e3fd301f.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	2S3134.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	4Y209P.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	42bba44f99.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	b04539ed47.exe
Key opened	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Software\Wine	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	b04539ed47.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0"	b04539ed47.exe

Adds Run key to start application 2 TTPs 5 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	69321782fa34fd498bdeec1689406544090465f528a2f3529326c85c612e444f.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup1 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP001.TMP\\\""	R2L54.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a8e3fd301f.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004261001\\a8e3fd301f.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\42bba44f99.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004262001\\42bba44f99.exe"	skotes.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\b04539ed47.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1004264001\\b04539ed47.exe"	skotes.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 9 IoCs

pid	Process
4680	2S3134.exe
3932	3H33Q.exe
1016	4Y209P.exe
4008	skotes.exe
2820	a8e3fd301f.exe
3444	42bba44f99.exe
1956	b04539ed47.exe
4080	skotes.exe
4384	skotes.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	4Y209P.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 4 IoCs

pid	pid_target	Process	procid_target
956	4680	WerFault.exe	87
1728	4680	WerFault.exe	87
2560	2820	WerFault.exe	107
3592	2820	WerFault.exe	107

System Location Discovery: System Language Discovery 1 TTPs 9 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	69321782fa34fd498bdeec1689406544090465f528a2f3529326c85c612e444f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	R2L54.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2S3134.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3H33Q.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a8e3fd301f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4Y209P.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	42bba44f99.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b04539ed47.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4680	2S3134.exe
4680	2S3134.exe
3932	3H33Q.exe
3932	3H33Q.exe
1016	4Y209P.exe
1016	4Y209P.exe
4008	skotes.exe
4008	skotes.exe
2820	a8e3fd301f.exe
2820	a8e3fd301f.exe
3444	42bba44f99.exe
3444	42bba44f99.exe
1956	b04539ed47.exe
1956	b04539ed47.exe
1956	b04539ed47.exe
1956	b04539ed47.exe
1956	b04539ed47.exe
4080	skotes.exe
4080	skotes.exe
4384	skotes.exe
4384	skotes.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1956	b04539ed47.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1016	4Y209P.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 1460 wrote to memory of 1580	1460	69321782fa34fd498bdeec1689406544090465f528a2f3529326c85c612e444f.exe	86
PID 1460 wrote to memory of 1580	1460	69321782fa34fd498bdeec1689406544090465f528a2f3529326c85c612e444f.exe	86
PID 1460 wrote to memory of 1580	1460	69321782fa34fd498bdeec1689406544090465f528a2f3529326c85c612e444f.exe	86
PID 1580 wrote to memory of 4680	1580	R2L54.exe	87
PID 1580 wrote to memory of 4680	1580	R2L54.exe	87
PID 1580 wrote to memory of 4680	1580	R2L54.exe	87
PID 1580 wrote to memory of 3932	1580	R2L54.exe	98
PID 1580 wrote to memory of 3932	1580	R2L54.exe	98
PID 1580 wrote to memory of 3932	1580	R2L54.exe	98
PID 1460 wrote to memory of 1016	1460	69321782fa34fd498bdeec1689406544090465f528a2f3529326c85c612e444f.exe	101
PID 1460 wrote to memory of 1016	1460	69321782fa34fd498bdeec1689406544090465f528a2f3529326c85c612e444f.exe	101
PID 1460 wrote to memory of 1016	1460	69321782fa34fd498bdeec1689406544090465f528a2f3529326c85c612e444f.exe	101
PID 1016 wrote to memory of 4008	1016	4Y209P.exe	102
PID 1016 wrote to memory of 4008	1016	4Y209P.exe	102
PID 1016 wrote to memory of 4008	1016	4Y209P.exe	102
PID 4008 wrote to memory of 2820	4008	skotes.exe	107
PID 4008 wrote to memory of 2820	4008	skotes.exe	107
PID 4008 wrote to memory of 2820	4008	skotes.exe	107
PID 4008 wrote to memory of 3444	4008	skotes.exe	113
PID 4008 wrote to memory of 3444	4008	skotes.exe	113
PID 4008 wrote to memory of 3444	4008	skotes.exe	113
PID 4008 wrote to memory of 4556	4008	skotes.exe	114
PID 4008 wrote to memory of 4556	4008	skotes.exe	114
PID 4008 wrote to memory of 4556	4008	skotes.exe	114
PID 4008 wrote to memory of 1956	4008	skotes.exe	115
PID 4008 wrote to memory of 1956	4008	skotes.exe	115
PID 4008 wrote to memory of 1956	4008	skotes.exe	115

C:\Users\Admin\AppData\Local\Temp\69321782fa34fd498bdeec1689406544090465f528a2f3529326c85c612e444f.exe
"C:\Users\Admin\AppData\Local\Temp\69321782fa34fd498bdeec1689406544090465f528a2f3529326c85c612e444f.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\R2L54.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\R2L54.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1580
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2S3134.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\2S3134.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:4680
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4680 -s 1568
      4⤵
      Program crash
      PID:956
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4680 -s 1580
      4⤵
      Program crash
      PID:1728
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3H33Q.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3H33Q.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:3932
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\4Y209P.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\4Y209P.exe
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Checks computer location settings
  - Executes dropped EXE
  - Identifies Wine through registry keys
  - 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:1016
- - 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
    - Checks computer location settings
    - 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: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4008
  - - C:\Users\Admin\AppData\Local\Temp\1004261001\a8e3fd301f.exe
      "C:\Users\Admin\AppData\Local\Temp\1004261001\a8e3fd301f.exe"
      4⤵
      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:2820
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 1580
        5⤵
        Program crash
        
        PID:2560
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 2820 -s 1568
        5⤵
        Program crash
        
        PID:3592
  - - C:\Users\Admin\AppData\Local\Temp\1004262001\42bba44f99.exe
      "C:\Users\Admin\AppData\Local\Temp\1004262001\42bba44f99.exe"
      4⤵
      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:3444
  - - C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
      "C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe"
      4⤵
      PID:4556
  - - C:\Users\Admin\AppData\Local\Temp\1004264001\b04539ed47.exe
      "C:\Users\Admin\AppData\Local\Temp\1004264001\b04539ed47.exe"
      4⤵
      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:1956

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4680 -ip 4680
1⤵
PID:4500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4680 -ip 4680
1⤵
PID:3608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2820 -ip 2820
1⤵
PID:4472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2820 -ip 2820
1⤵
PID:4308

C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
1⤵
- 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
- Suspicious behavior: EnumeratesProcesses
PID:4080

C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
1⤵
- 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
- Suspicious behavior: EnumeratesProcesses
PID:4384

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