saintbot | 7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\47676.exe	7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\47676.exe	47676.exe

Executes dropped EXE 1 IoCs

pid	Process
4512	47676.exe

Loads dropped DLL 2 IoCs

pid	Process
4512	47676.exe
3168	EhStorAuthn.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Maps connected drives based on registry 3 TTPs 6 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

Peripheral Device Discovery

T1120

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum	7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum	47676.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	47676.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum	EhStorAuthn.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	EhStorAuthn.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\EhStorAuthn.exe	EhStorAuthn.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4248	2764	WerFault.exe	85
840	4512	WerFault.exe	94

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	EhStorAuthn.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EhStorAuthn.exe

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
5104	schtasks.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1636	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4512	47676.exe
4512	47676.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2764 wrote to memory of 4512	2764	7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe	94
PID 2764 wrote to memory of 4512	2764	7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe	94
PID 2764 wrote to memory of 4512	2764	7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe	94
PID 2764 wrote to memory of 4908	2764	7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe	95
PID 2764 wrote to memory of 4908	2764	7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe	95
PID 2764 wrote to memory of 4908	2764	7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe	95
PID 4908 wrote to memory of 1636	4908	cmd.exe	99
PID 4908 wrote to memory of 1636	4908	cmd.exe	99
PID 4908 wrote to memory of 1636	4908	cmd.exe	99
PID 4908 wrote to memory of 2824	4908	cmd.exe	102
PID 4908 wrote to memory of 2824	4908	cmd.exe	102
PID 4908 wrote to memory of 2824	4908	cmd.exe	102
PID 4512 wrote to memory of 3168	4512	47676.exe	105
PID 4512 wrote to memory of 3168	4512	47676.exe	105
PID 4512 wrote to memory of 3168	4512	47676.exe	105
PID 4512 wrote to memory of 3168	4512	47676.exe	105
PID 3168 wrote to memory of 5104	3168	EhStorAuthn.exe	108
PID 3168 wrote to memory of 5104	3168	EhStorAuthn.exe	108
PID 3168 wrote to memory of 5104	3168	EhStorAuthn.exe	108

C:\Users\Admin\AppData\Local\Temp\7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe
"C:\Users\Admin\AppData\Local\Temp\7b3d377ca2f6f9ea48265a80355fe6dc622a9b4b43855a9ddec7eb5e4666a1d4.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Maps connected drives based on registry
- Suspicious use of WriteProcessMemory
PID:2764
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\47676.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\47676.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Loads dropped DLL
  - Maps connected drives based on registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:4512
- - C:\Windows\SysWOW64\EhStorAuthn.exe
    "C:\Windows\System32\EhStorAuthn.exe"
    3⤵
    - Loads dropped DLL
    - Maps connected drives based on registry
    - Drops file in System32 directory
    - Checks processor information in registry
    - Suspicious use of WriteProcessMemory
    PID:3168
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 5 /tn "Maintenance" /tr "C:\Users\%USERNAME%\AppData\Local\z_%USERNAME%\%USERNAME%.vbs" /F
      4⤵
      Creates scheduled task(s)
      PID:5104
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4512 -s 648
    3⤵
    - Program crash
    PID:840
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\del.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4908
- - C:\Windows\SysWOW64\PING.EXE
    ping localhost -n 3
    3⤵
    - Runs ping.exe
    PID:1636
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c del "C:\Users\Admin\AppData\Roaming\del.bat"
    3⤵
    PID:2824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2764 -s 1144
  2⤵
  - Program crash
  PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2764 -ip 2764
1⤵
PID:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4512 -ip 4512
1⤵
PID:1000

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

Peripheral Device Discovery

T1120

Query Registry

Remote System Discovery

T1018

System Information Discovery