966f1a3f09434d129c3601f3e1f76c8a941e70a6e07186841fd4142b0d13de5a

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	crypt.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4868	powershell.exe
2976	powershell.exe

Checks BIOS information in registry 2 TTPs 1 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\SystemBiosVersion	AXIMTR~1.EXE

Executes dropped EXE 2 IoCs

pid	Process
5072	crypt.exe
4240	AXIMTR~1.EXE

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	xxSMTPxx.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	crypt.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	AXIMTR~1.EXE

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\checkwritepermissions.exe	AXIMTR~1.EXE
File created	C:\Program Files (x86)\checkwritepermissions.exe	AXIMTR~1.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	AXIMTR~1.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	AXIMTR~1.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	AXIMTR~1.EXE
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	AXIMTR~1.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	AXIMTR~1.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
5072	crypt.exe
4868	powershell.exe
4868	powershell.exe
5072	crypt.exe
2976	powershell.exe
2976	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5072	crypt.exe
Token: SeDebugPrivilege	4868	powershell.exe
Token: SeDebugPrivilege	2976	powershell.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2320 wrote to memory of 5072	2320	xxSMTPxx.exe	83
PID 2320 wrote to memory of 5072	2320	xxSMTPxx.exe	83
PID 5072 wrote to memory of 4868	5072	crypt.exe	84
PID 5072 wrote to memory of 4868	5072	crypt.exe	84
PID 5072 wrote to memory of 2976	5072	crypt.exe	86
PID 5072 wrote to memory of 2976	5072	crypt.exe	86
PID 5072 wrote to memory of 1644	5072	crypt.exe	88
PID 5072 wrote to memory of 1644	5072	crypt.exe	88
PID 5072 wrote to memory of 1644	5072	crypt.exe	88
PID 2320 wrote to memory of 4240	2320	xxSMTPxx.exe	89
PID 2320 wrote to memory of 4240	2320	xxSMTPxx.exe	89

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	crypt.exe

C:\Users\Admin\AppData\Local\Temp\xxSMTPxx\Private Cracker\xxSMTPxx.exe
"C:\Users\Admin\AppData\Local\Temp\xxSMTPxx\Private Cracker\xxSMTPxx.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2320
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\crypt.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\crypt.exe
  2⤵
  - UAC bypass
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:5072
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\crypt.exe" -Force
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4868
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\svchost.exe" -Force
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2976
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
    3⤵
    PID:1644
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\AXIMTR~1.EXE
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\AXIMTR~1.EXE
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - Drops file in Program Files directory
  - Checks processor information in registry
  - Enumerates system info in registry
  PID:4240

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Abuse Elevation Control Mechanism

T1548

Bypass User Account Control

T1548.002

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Query Registry

System Information Discovery