8da455738971a9c0abe1edc19cc7eb509d3123fc55424522379b815979e2bcd7

Analysis

max time kernel
151s
max time network
34s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
25/03/2023, 23:40

Target

bios/SCPH-77000_BIOS_V15_JAP_220.nvm
Size

1024B
MD5

6ad834dda70f6ba2037b11664ea5a6d8
SHA1

16d03c6ed2fa155a22caa88fcc29f3aad90ac689
SHA256

5587555866441d1dded2251925aa27d46e61fae9853f3c57302c7e037bfeead4
SHA512

e475ab85a7bc540645a358759bf30e5080961f3ed06fa8ef005486791785bea70707e6e3d602cbdeeca5afa9dcd9d7dd91e3d286a10591c882a0f82d37ff53d4

Score

3^/10

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

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\nvm_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\nvm_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\nvm_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\nvm_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\nvm_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\nvm_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\.nvm	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1283023626-844874658-3193756055-1000_CLASSES\.nvm\ = "nvm_auto_file"	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 1876	2040	cmd.exe	29
PID 2040 wrote to memory of 1876	2040	cmd.exe	29
PID 2040 wrote to memory of 1876	2040	cmd.exe	29
PID 1876 wrote to memory of 1544	1876	rundll32.exe	30
PID 1876 wrote to memory of 1544	1876	rundll32.exe	30
PID 1876 wrote to memory of 1544	1876	rundll32.exe	30
PID 1876 wrote to memory of 1544	1876	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\bios\SCPH-77000_BIOS_V15_JAP_220.nvm
1⤵
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\bios\SCPH-77000_BIOS_V15_JAP_220.nvm
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1876
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\bios\SCPH-77000_BIOS_V15_JAP_220.nvm"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1544

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact