8bfe749e5e0a9985833b5f6064af69476c7d165ec1ffae8479adf773f56ef71c

Analysis

max time kernel
118s
max time network
136s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
25-12-2023 06:41

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General

Target

0c537a43f020d1ba36e2b5a05d5a181d.exe
Size

268KB
MD5

0c537a43f020d1ba36e2b5a05d5a181d
SHA1

9a745071bb4244819806000253bb5e2bd9eacf3f
SHA256

8bfe749e5e0a9985833b5f6064af69476c7d165ec1ffae8479adf773f56ef71c
SHA512

8bf5298c449b8e43dc8e30e87ba31a5453d789c970ef02cc5307e632c139fcd31175afa4f02deba6bfb831be2cd97aaa3bfb520b4a3f0126f82db0ec2228f272
SSDEEP

6144:UJJglU4Q68qSiuDEiVy+TEa5fdmyKyjsylTopys8bG:41fuiVfPr7jsylTopbF

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	uninstall.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	0c537a43f020d1ba36e2b5a05d5a181d.exe

Executes dropped EXE 1 IoCs

pid	Process
2988	uninstall.exe

Loads dropped DLL 4 IoCs

pid	Process
2836	0c537a43f020d1ba36e2b5a05d5a181d.exe
2988	uninstall.exe
2988	uninstall.exe
2988	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	0c537a43f020d1ba36e2b5a05d5a181d.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	0c537a43f020d1ba36e2b5a05d5a181d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	0c537a43f020d1ba36e2b5a05d5a181d.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 1 IoCs

pid	Process
2988	uninstall.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2836 wrote to memory of 2988	2836	0c537a43f020d1ba36e2b5a05d5a181d.exe	29
PID 2836 wrote to memory of 2988	2836	0c537a43f020d1ba36e2b5a05d5a181d.exe	29
PID 2836 wrote to memory of 2988	2836	0c537a43f020d1ba36e2b5a05d5a181d.exe	29
PID 2836 wrote to memory of 2988	2836	0c537a43f020d1ba36e2b5a05d5a181d.exe	29
PID 2836 wrote to memory of 2988	2836	0c537a43f020d1ba36e2b5a05d5a181d.exe	29
PID 2836 wrote to memory of 2988	2836	0c537a43f020d1ba36e2b5a05d5a181d.exe	29
PID 2836 wrote to memory of 2988	2836	0c537a43f020d1ba36e2b5a05d5a181d.exe	29

C:\Users\Admin\AppData\Local\Temp\0c537a43f020d1ba36e2b5a05d5a181d.exe
"C:\Users\Admin\AppData\Local\Temp\0c537a43f020d1ba36e2b5a05d5a181d.exe"
1⤵
- Checks BIOS information in registry
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
PID:2836
- 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
  - Loads dropped DLL
  - Writes to the Master Boot Record (MBR)
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:2988

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

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

Filesize
268KB

MD5
0c537a43f020d1ba36e2b5a05d5a181d

SHA1
9a745071bb4244819806000253bb5e2bd9eacf3f

SHA256
8bfe749e5e0a9985833b5f6064af69476c7d165ec1ffae8479adf773f56ef71c

SHA512
8bf5298c449b8e43dc8e30e87ba31a5453d789c970ef02cc5307e632c139fcd31175afa4f02deba6bfb831be2cd97aaa3bfb520b4a3f0126f82db0ec2228f272

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