5d6441cca42e93d2697dee285c6636a9292dfd8c9e2414aea7ec07b84758d2f4

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24/12/2023, 22:00

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General

Target

143c4ad0066283f32c23d311e61c02e2.exe
Size

350KB
MD5

143c4ad0066283f32c23d311e61c02e2
SHA1

1ddfc575e32e6a35fdfee7df1bf8947d96c89bc4
SHA256

5d6441cca42e93d2697dee285c6636a9292dfd8c9e2414aea7ec07b84758d2f4
SHA512

b7daceae7088653a0ddfbd2fa2ed4bd5a89b2f5d9e9e821fda079de467b362e766b6ec287288a9d010ead5be46da32ad8b8126b73ca1e70822e2493e193cbe04
SSDEEP

6144:T4+FA+BAiMXHQur9MD7Lk9vtXyCLFlINvWLkNGPTd0owmYUUGO56pjPwjw:sW+iMXHknLSvtbDLkNG1w+UG6xw

Score

7^/10

bootkit persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4032	uninstall.exe

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	143c4ad0066283f32c23d311e61c02e2.exe
File opened for modification	\??\PhysicalDrive0	uninstall.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4032	uninstall.exe
4032	uninstall.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
4620	143c4ad0066283f32c23d311e61c02e2.exe
4032	uninstall.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4620 wrote to memory of 4032	4620	143c4ad0066283f32c23d311e61c02e2.exe	40
PID 4620 wrote to memory of 4032	4620	143c4ad0066283f32c23d311e61c02e2.exe	40
PID 4620 wrote to memory of 4032	4620	143c4ad0066283f32c23d311e61c02e2.exe	40

C:\Users\Admin\AppData\Local\Temp\143c4ad0066283f32c23d311e61c02e2.exe
"C:\Users\Admin\AppData\Local\Temp\143c4ad0066283f32c23d311e61c02e2.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4620
- C:\Users\Admin\AppData\Local\Temp\uninstall.exe
  C:\Users\Admin\AppData\Local\Temp\uninstall.exe
  2⤵
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  PID:4032

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\uninstall.exe

Filesize
350KB

MD5
143c4ad0066283f32c23d311e61c02e2

SHA1
1ddfc575e32e6a35fdfee7df1bf8947d96c89bc4

SHA256
5d6441cca42e93d2697dee285c6636a9292dfd8c9e2414aea7ec07b84758d2f4

SHA512
b7daceae7088653a0ddfbd2fa2ed4bd5a89b2f5d9e9e821fda079de467b362e766b6ec287288a9d010ead5be46da32ad8b8126b73ca1e70822e2493e193cbe04

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