6c22662a21bcaf8b65b581982cd5e6f91448a01d6cf94ff13d3ba4b87ae97d25

Analysis

max time kernel
95s
max time network
180s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
31-05-2023 18:19

Target

Windows/Boot/DVD/EFI/en-US/efisys_noprompt.bin
Size

1.4MB
MD5

d0f30c2942960dfce0e90efb382385cf
SHA1

23e897410c65b06cdfa4a166bc8929d8ee796243
SHA256

9efc728c4724ade5ee477f4c73b97bd1bc3fe05a2bedb1f435f908d5c7ba908e
SHA512

b6cb5b6e6bb88f59ce3a03fcdeeb5f1fae68b09b1adbf6780d4ed17b57b987554ce621fd5f91ba4e06859572740bdb1c681e755d34d1899eae35266227614863
SSDEEP

24576:lRjbjmGfDjGbQD9u3G1WZGsR1BTl6XlzPmdoIK:uMeQZcG5sRT+lbm6Z

Score

3^/10

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

Processes:

cmd.exeOpenWith.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000_Classes\Local Settings	OpenWith.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

OpenWith.exe

pid process

3644 OpenWith.exe

pid	process
3644	OpenWith.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Windows\Boot\DVD\EFI\en-US\efisys_noprompt.bin
1⤵
- Modifies registry class
PID:4444

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact