6c22662a21bcaf8b65b581982cd5e6f91448a01d6cf94ff13d3ba4b87ae97d25

Analysis

max time kernel
137s
max time network
207s
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.bin
Size

1.4MB
MD5

11a1dbc6ca6863bc889114636d979fb5
SHA1

d45c4643e5ed3f8922c0ed99f31194e4b9e4612e
SHA256

8945d88d65809d2555c50c40a736b6f32added33d09df2d18ca0e40098b52e03
SHA512

4dd402389301986332d4419717d92f5b5417a3f5e0373ef4cac75253a58abf00e6c7d9e9d6b7844a4f58b1925fe9827b0f11cd460313a79f8d41f48f99af2334
SSDEEP

24576:jYDb1GLdr7ecbtUgPUX53cizXxgnaSJ0jPmRoIdQ:Zldb2CU2ijdLmu

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-1-5-21-2548970870-3691742953-3895070203-1000_Classes\Local Settings	cmd.exe
Key created	\REGISTRY\USER\S-1-5-21-2548970870-3691742953-3895070203-1000_Classes\Local Settings	OpenWith.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

OpenWith.exe

pid process

4376 OpenWith.exe

pid	process
4376	OpenWith.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Windows\Boot\DVD\EFI\en-US\efisys.bin
1⤵
- Modifies registry class
PID:4148

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact