fb38f3b96d9f62383d8c23e99466d2dc34caf38c08dcddd018316da71d81e54a

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19/03/2024, 06:08

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General

Target

d5640ae6c04429a1be9e10750faa6b86.exe
Size

284KB
MD5

d5640ae6c04429a1be9e10750faa6b86
SHA1

4ee8d53086cf4fc5348b4384619809b6f76a2ceb
SHA256

fb38f3b96d9f62383d8c23e99466d2dc34caf38c08dcddd018316da71d81e54a
SHA512

050721497cc941e907fe7f6f8eb6c59e32004c8b3be8187e8a83288316a38b82223adb408ddb10df7a4b1c66134cb07032d92fd694b34353d06fe85e29722a8e
SSDEEP

6144:5w9Sbu9bL2Y9T/NkKUIzJgOBRAirVPV22EakrrmKD2Iv8YrY:4Vf9hdgOfAi92Ha2mKaA2

Score

7^/10

bootkit persistence spyware stealer

Malware Config

Signatures

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	d5640ae6c04429a1be9e10750faa6b86.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	uninstall.exe

Executes dropped EXE 1 IoCs

pid	Process
4604	uninstall.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

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	d5640ae6c04429a1be9e10750faa6b86.exe
File opened for modification	\??\PhysicalDrive0	uninstall.exe

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	d5640ae6c04429a1be9e10750faa6b86.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	d5640ae6c04429a1be9e10750faa6b86.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	uninstall.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	uninstall.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4604	uninstall.exe
4604	uninstall.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2992 wrote to memory of 4604	2992	d5640ae6c04429a1be9e10750faa6b86.exe	87
PID 2992 wrote to memory of 4604	2992	d5640ae6c04429a1be9e10750faa6b86.exe	87
PID 2992 wrote to memory of 4604	2992	d5640ae6c04429a1be9e10750faa6b86.exe	87

C:\Users\Admin\AppData\Local\Temp\d5640ae6c04429a1be9e10750faa6b86.exe
"C:\Users\Admin\AppData\Local\Temp\d5640ae6c04429a1be9e10750faa6b86.exe"
1⤵
- Checks BIOS information in registry
- Writes to the Master Boot Record (MBR)
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\Temp\uninstall.exe
  C:\Users\Admin\AppData\Local\Temp\uninstall.exe
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Writes to the Master Boot Record (MBR)
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4604

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

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
284KB

MD5
d5640ae6c04429a1be9e10750faa6b86

SHA1
4ee8d53086cf4fc5348b4384619809b6f76a2ceb

SHA256
fb38f3b96d9f62383d8c23e99466d2dc34caf38c08dcddd018316da71d81e54a

SHA512
050721497cc941e907fe7f6f8eb6c59e32004c8b3be8187e8a83288316a38b82223adb408ddb10df7a4b1c66134cb07032d92fd694b34353d06fe85e29722a8e

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