343d6abe51689e05a9bb3cf35e87062e02e4d2e6dc10b9dd02401afbdbbaf5ec

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-1-5-21-984744499-3605095035-265325720-1000\Control Panel\International\Geo\Nation	Install.exe

Executes dropped EXE 2 IoCs

pid	Process
4568	Install.exe
2560	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
1048	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
4948	powershell.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4948	powershell.EXE

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 3256 wrote to memory of 4568	3256	file.exe	88
PID 3256 wrote to memory of 4568	3256	file.exe	88
PID 3256 wrote to memory of 4568	3256	file.exe	88
PID 4568 wrote to memory of 2560	4568	Install.exe	89
PID 4568 wrote to memory of 2560	4568	Install.exe	89
PID 4568 wrote to memory of 2560	4568	Install.exe	89
PID 2560 wrote to memory of 4308	2560	Install.exe	93
PID 2560 wrote to memory of 4308	2560	Install.exe	93
PID 2560 wrote to memory of 4308	2560	Install.exe	93
PID 2560 wrote to memory of 2060	2560	Install.exe	95
PID 2560 wrote to memory of 2060	2560	Install.exe	95
PID 2560 wrote to memory of 2060	2560	Install.exe	95
PID 4308 wrote to memory of 904	4308	forfiles.exe	97
PID 4308 wrote to memory of 904	4308	forfiles.exe	97
PID 4308 wrote to memory of 904	4308	forfiles.exe	97
PID 2060 wrote to memory of 1160	2060	forfiles.exe	98
PID 2060 wrote to memory of 1160	2060	forfiles.exe	98
PID 2060 wrote to memory of 1160	2060	forfiles.exe	98
PID 1160 wrote to memory of 940	1160	cmd.exe	99
PID 1160 wrote to memory of 940	1160	cmd.exe	99
PID 1160 wrote to memory of 940	1160	cmd.exe	99
PID 904 wrote to memory of 1020	904	cmd.exe	100
PID 904 wrote to memory of 1020	904	cmd.exe	100
PID 904 wrote to memory of 1020	904	cmd.exe	100
PID 904 wrote to memory of 3652	904	cmd.exe	101
PID 904 wrote to memory of 3652	904	cmd.exe	101
PID 904 wrote to memory of 3652	904	cmd.exe	101
PID 1160 wrote to memory of 3656	1160	cmd.exe	102
PID 1160 wrote to memory of 3656	1160	cmd.exe	102
PID 1160 wrote to memory of 3656	1160	cmd.exe	102
PID 2560 wrote to memory of 1048	2560	Install.exe	103
PID 2560 wrote to memory of 1048	2560	Install.exe	103
PID 2560 wrote to memory of 1048	2560	Install.exe	103
PID 2560 wrote to memory of 1928	2560	Install.exe	105
PID 2560 wrote to memory of 1928	2560	Install.exe	105
PID 2560 wrote to memory of 1928	2560	Install.exe	105

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3256
- C:\Users\Admin\AppData\Local\Temp\7zS7782.tmp\Install.exe
  .\Install.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:4568
- - C:\Users\Admin\AppData\Local\Temp\7zS7966.tmp\Install.exe
    .\Install.exe /SUdidfx "525403" /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:2560
  - - 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:4308
    - - 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:904
      - \??\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:1020
      - \??\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:3652
  - - 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:2060
    - - 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:1160
      - \??\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:940
      - \??\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:3656
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /CREATE /TN "gNoUpVtIZ" /SC once /ST 11:32:30 /F /RU "Admin" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA=="
      4⤵
      Creates scheduled task(s)
      PID:1048
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /run /I /tn "gNoUpVtIZ"
      4⤵
      PID:1928

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:4948

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