91842fb7fa1c1ff89ccbf7f22013609ecdf520bd4fc5e9e382c0c8615d22b784

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SESSION MANAGER\BootExecute = 6100750074006f0063006800650063006b0020006100750074006f00630068006b0020002a0000000000	reg.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet002\Control\Session Manager\BootExecute = 6100750074006f0063006800650063006b0020006100750074006f00630068006b0020002a0000000000	reg.exe
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SESSION MANAGER\BootExecute = 6100750074006f0063006800650063006b0020006100750074006f00630068006b0020002a0000000000	reg.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Windows32 = "C:\\Arquivos de programas\\Windows32.exe"	04b66998158d55722562b37875128cad.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\reg_0098.txt	04b66998158d55722562b37875128cad.exe

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2776	sc.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2560	2276	WerFault.exe	27

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

T1053

pid	Process
2672	schtasks.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2276	04b66998158d55722562b37875128cad.exe
2276	04b66998158d55722562b37875128cad.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 2672	2276	04b66998158d55722562b37875128cad.exe	28
PID 2276 wrote to memory of 2672	2276	04b66998158d55722562b37875128cad.exe	28
PID 2276 wrote to memory of 2672	2276	04b66998158d55722562b37875128cad.exe	28
PID 2276 wrote to memory of 2672	2276	04b66998158d55722562b37875128cad.exe	28
PID 2276 wrote to memory of 2776	2276	04b66998158d55722562b37875128cad.exe	30
PID 2276 wrote to memory of 2776	2276	04b66998158d55722562b37875128cad.exe	30
PID 2276 wrote to memory of 2776	2276	04b66998158d55722562b37875128cad.exe	30
PID 2276 wrote to memory of 2776	2276	04b66998158d55722562b37875128cad.exe	30
PID 2276 wrote to memory of 2812	2276	04b66998158d55722562b37875128cad.exe	31
PID 2276 wrote to memory of 2812	2276	04b66998158d55722562b37875128cad.exe	31
PID 2276 wrote to memory of 2812	2276	04b66998158d55722562b37875128cad.exe	31
PID 2276 wrote to memory of 2812	2276	04b66998158d55722562b37875128cad.exe	31
PID 2276 wrote to memory of 2760	2276	04b66998158d55722562b37875128cad.exe	33
PID 2276 wrote to memory of 2760	2276	04b66998158d55722562b37875128cad.exe	33
PID 2276 wrote to memory of 2760	2276	04b66998158d55722562b37875128cad.exe	33
PID 2276 wrote to memory of 2760	2276	04b66998158d55722562b37875128cad.exe	33
PID 2276 wrote to memory of 2824	2276	04b66998158d55722562b37875128cad.exe	34
PID 2276 wrote to memory of 2824	2276	04b66998158d55722562b37875128cad.exe	34
PID 2276 wrote to memory of 2824	2276	04b66998158d55722562b37875128cad.exe	34
PID 2276 wrote to memory of 2824	2276	04b66998158d55722562b37875128cad.exe	34
PID 2276 wrote to memory of 2560	2276	04b66998158d55722562b37875128cad.exe	38
PID 2276 wrote to memory of 2560	2276	04b66998158d55722562b37875128cad.exe	38
PID 2276 wrote to memory of 2560	2276	04b66998158d55722562b37875128cad.exe	38
PID 2276 wrote to memory of 2560	2276	04b66998158d55722562b37875128cad.exe	38

C:\Users\Admin\AppData\Local\Temp\04b66998158d55722562b37875128cad.exe
"C:\Users\Admin\AppData\Local\Temp\04b66998158d55722562b37875128cad.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Windows\SysWOW64\schtasks.exe
  schtasks /create /tn startt /tr c:\autoexec.bat /sc onstart /ru system
  2⤵
  - Creates scheduled task(s)
  PID:2672
- C:\Windows\SysWOW64\sc.exe
  sc delete GbpSv
  2⤵
  - Launches sc.exe
  PID:2776
- C:\Windows\SysWOW64\reg.exe
  reg add "HKLM\SYSTEM\ControlSet001\Control\Session manager" /v BootExecute /t REG_MULTI_SZ /d "autocheck autochk *" /f
  2⤵
  - Uses Session Manager for persistence
  PID:2812
- C:\Windows\SysWOW64\reg.exe
  reg add "HKLM\SYSTEM\ControlSet002\Control\Session manager" /v BootExecute /t REG_MULTI_SZ /d "autocheck autochk *" /f
  2⤵
  - Uses Session Manager for persistence
  PID:2760
- C:\Windows\SysWOW64\reg.exe
  reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session manager" /v BootExecute /t REG_MULTI_SZ /d "autocheck autochk *" /f
  2⤵
  - Uses Session Manager for persistence
  PID:2824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2276 -s 808
  2⤵
  - Program crash
  PID:2560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Create or Modify System Process

T1543

Windows Service

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Create or Modify System Process

T1543

Windows Service

Scheduled Task/Job

Defense Evasion

Impair Defenses

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop