2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
25-05-2024 22:41

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General

Target

2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5.exe
Size

11.4MB
MD5

a9d62ee5d5a186ea24e211adcdf19f9c
SHA1

b2f785840347ab0e34af92fa35c5a4a62041cbdc
SHA256

2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5
SHA512

66804d18c0ca11412824befef1ac8178b2d6d97547750fe4e3ba4613b3c502354eaa99c8c09b52f5e0ffad3972d2ef8a35a91f91def73017d48a3cef5eaf29b3
SSDEEP

196608:urX/gauksEYjBVp9AklvD0SVHSQzGSsuPM/WGYtIsFQxrufpLJV4:Mg5FEYfp9AUHDau0/WGWUNuto

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

Processes:

2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5.exe

pid process

1804 2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5.exe
Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1542.003

Processes:

2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5.exe

description ioc process

File opened for modification \??\PhysicalDrive0 2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5.exe

pid	process
1804	2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5.exe
1804	2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5.exe

C:\Users\Admin\AppData\Local\Temp\2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5.exe
"C:\Users\Admin\AppData\Local\Temp\2d2b3353a0601cc6ac21723c6ee7646986b5c04ab2a997beeb00f49c4c795fc5.exe"
1⤵
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Suspicious use of SetWindowsHookEx
PID:1804

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\ExuiKrnln_Win32_20230112.lib
Filesize
1.3MB

MD5
df119e4f6353249e6e75abebc5db63e9

SHA1
c421665f11b0b3e5bc5625f9c0c6bef5f9e17f3f

SHA256
caef2c60a19e73f7c99d881351e0c087f1450e49ef7f1242ca0389044dfedfc4

SHA512
8b02733bfe194fd25f81ca1ef7ae5fdb009fe101c6591a787afacdb18557fe215cd25e0a8d8c88740a3279f6a22aa6dd49abf821a747853a2de405ffc3e48cf0

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