40de6ab6eebd82e9a72c8ddc8f2eef234718f919a869719f7eddec0da571c521

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-1-5-21-2295526160-1155304984-640977766-1000\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\bJbhxhmwQPPePEjnjA.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
3684	schtasks.exe
3344	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
788	powershell.EXE
788	powershell.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	788	powershell.EXE

Suspicious use of WriteProcessMemory 44 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 372	1368	file.exe	82
PID 1368 wrote to memory of 372	1368	file.exe	82
PID 1368 wrote to memory of 372	1368	file.exe	82
PID 372 wrote to memory of 2736	372	Install.exe	84
PID 372 wrote to memory of 2736	372	Install.exe	84
PID 372 wrote to memory of 2736	372	Install.exe	84
PID 2736 wrote to memory of 4020	2736	Install.exe	88
PID 2736 wrote to memory of 4020	2736	Install.exe	88
PID 2736 wrote to memory of 4020	2736	Install.exe	88
PID 2736 wrote to memory of 3924	2736	Install.exe	90
PID 2736 wrote to memory of 3924	2736	Install.exe	90
PID 2736 wrote to memory of 3924	2736	Install.exe	90
PID 4020 wrote to memory of 2520	4020	forfiles.exe	92
PID 4020 wrote to memory of 2520	4020	forfiles.exe	92
PID 4020 wrote to memory of 2520	4020	forfiles.exe	92
PID 3924 wrote to memory of 4616	3924	forfiles.exe	93
PID 3924 wrote to memory of 4616	3924	forfiles.exe	93
PID 3924 wrote to memory of 4616	3924	forfiles.exe	93
PID 2520 wrote to memory of 2300	2520	cmd.exe	94
PID 2520 wrote to memory of 2300	2520	cmd.exe	94
PID 2520 wrote to memory of 2300	2520	cmd.exe	94
PID 4616 wrote to memory of 4296	4616	cmd.exe	95
PID 4616 wrote to memory of 4296	4616	cmd.exe	95
PID 4616 wrote to memory of 4296	4616	cmd.exe	95
PID 2520 wrote to memory of 4828	2520	cmd.exe	96
PID 2520 wrote to memory of 4828	2520	cmd.exe	96
PID 2520 wrote to memory of 4828	2520	cmd.exe	96
PID 4616 wrote to memory of 5032	4616	cmd.exe	97
PID 4616 wrote to memory of 5032	4616	cmd.exe	97
PID 4616 wrote to memory of 5032	4616	cmd.exe	97
PID 2736 wrote to memory of 3684	2736	Install.exe	99
PID 2736 wrote to memory of 3684	2736	Install.exe	99
PID 2736 wrote to memory of 3684	2736	Install.exe	99
PID 2736 wrote to memory of 4488	2736	Install.exe	102
PID 2736 wrote to memory of 4488	2736	Install.exe	102
PID 2736 wrote to memory of 4488	2736	Install.exe	102
PID 788 wrote to memory of 3428	788	powershell.EXE	105
PID 788 wrote to memory of 3428	788	powershell.EXE	105
PID 2736 wrote to memory of 3700	2736	Install.exe	112
PID 2736 wrote to memory of 3700	2736	Install.exe	112
PID 2736 wrote to memory of 3700	2736	Install.exe	112
PID 2736 wrote to memory of 3344	2736	Install.exe	114
PID 2736 wrote to memory of 3344	2736	Install.exe	114
PID 2736 wrote to memory of 3344	2736	Install.exe	114

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Users\Admin\AppData\Local\Temp\7zS7D14.tmp\Install.exe
  .\Install.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:372
- - C:\Users\Admin\AppData\Local\Temp\7zS80DD.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:2736
  - - 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:4020
    - - 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:2520
      - \??\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:2300
      - \??\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:4828
  - - 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:4616
      - \??\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:4296
      - \??\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:5032
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /CREATE /TN "gHaCNdeHw" /SC once /ST 09:50:09 /F /RU "Admin" /TR "powershell -WindowStyle Hidden -EncodedCommand cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAC0AVwBpAG4AZABvAHcAUwB0AHkAbABlACAASABpAGQAZABlAG4AIABnAHAAdQBwAGQAYQB0AGUALgBlAHgAZQAgAC8AZgBvAHIAYwBlAA=="
      4⤵
      Creates scheduled task(s)
      PID:3684
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /run /I /tn "gHaCNdeHw"
      4⤵
      PID:4488
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /DELETE /F /TN "gHaCNdeHw"
      4⤵
      PID:3700
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /CREATE /TN "bJbhxhmwQPPePEjnjA" /SC once /ST 18:05:00 /RU "SYSTEM" /TR "\"C:\Users\Admin\AppData\Local\Temp\alLGALgTRSblXywJD\nzjBlZvpbSzibxG\NMohskR.exe\" sw /site_id 525403 /S" /V1 /F
      4⤵
      Drops file in Windows directory
      Creates scheduled task(s)
      PID:3344

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:788
- C:\Windows\system32\gpupdate.exe
  "C:\Windows\system32\gpupdate.exe" /force
  2⤵
  PID:3428

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
1⤵
PID:4496

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
1⤵
PID:1504

C:\Windows\system32\gpscript.exe
gpscript.exe /RefreshSystemParam
1⤵
PID:824

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