8f85511a3740813e02772f3c3de36a0212c4b92144edc1570b7ceec367e84721

Analysis

max time kernel
151s
max time network
167s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12/02/2024, 02:32

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General

Target

8f85511a3740813e02772f3c3de36a0212c4b92144edc1570b7ceec367e84721.exe
Size

2.8MB
MD5

d88957ce73ecc965e9e20135485ba261
SHA1

677d695691f1a09af9c7cc912c000dfe654042aa
SHA256

8f85511a3740813e02772f3c3de36a0212c4b92144edc1570b7ceec367e84721
SHA512

4074fa9ae7d011ede4bbdd78626b55d4e16161899e4c7febee80ff3335e15a8ae6f62339820175e47e80729599d8083f212f6797c9c591e377e18151f90411b4
SSDEEP

49152:OoN5hj0b85135CIxzHOldFEFIJuCPcXqut1Z36OJIeb6gP3yTotvDdvPhgo7gq0y:OoP+APAtfzJebdgqX

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1716	8f85511a3740813e02772f3c3de36a0212c4b92144edc1570b7ceec367e84721.exe

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\F:	8f85511a3740813e02772f3c3de36a0212c4b92144edc1570b7ceec367e84721.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

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	8f85511a3740813e02772f3c3de36a0212c4b92144edc1570b7ceec367e84721.exe

C:\Users\Admin\AppData\Local\Temp\8f85511a3740813e02772f3c3de36a0212c4b92144edc1570b7ceec367e84721.exe
"C:\Users\Admin\AppData\Local\Temp\8f85511a3740813e02772f3c3de36a0212c4b92144edc1570b7ceec367e84721.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
PID:1716

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

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Tencent\TxGameAssistant\TGBDownloader\dr.dll

Filesize
74KB

MD5
2814acbd607ba47bdbcdf6ac3076ee95

SHA1
50ab892071bed2bb2365ca1d4bf5594e71c6b13b

SHA256
5904a7e4d97eeac939662c3638a0e145f64ff3dd0198f895c4bf0337595c6a67

SHA512
34c73014ffc8d38d6dd29f4f84c8f4f9ea971bc131f665f65b277f453504d5efc2d483a792cdea610c5e0544bf3997b132dcdbe37224912c5234c15cdb89d498

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads