54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b

Analysis

max time kernel
129s
max time network
99s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 04:48

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General

Target

54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe
Size

3.4MB
MD5

09bc353c0cee48f379129b6730ef9522
SHA1

454aa2bc762886e101a3e780ed5a8e2bfacee9ac
SHA256

54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b
SHA512

fead684a4a0763c221bb797a060004f0702c0fb1590e050a4f258b9e9c314e3047c2ab3b44f2980dc6738d459e90076d4b8b8e5d6cc72ac89fddf21bf16e43cb
SSDEEP

49152:UEjEamQb2OguN8Dfk5JEG14wv2QwnN4iTapOcaPKfjtD8cEOxeuxzS2hPV5T1gWc:UEjlmQbfgSgwvSnN4iVJuS0xJdzYUql

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

Processes:

54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe

pid process

4552 54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.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

Processes:

54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe

description ioc process

File opened (read-only) \??\F: 54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.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:

54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe

description ioc process

File opened for modification \??\PhysicalDrive0 54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe

description	ioc	process
File opened (read-only)	\??\F:	54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe

pid	process
4552	54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe
4552	54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe

C:\Users\Admin\AppData\Local\Temp\54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe
"C:\Users\Admin\AppData\Local\Temp\54ba260ec3e0477b1b7c83bf5a4c1cdc561e5b0b53b33fb472df7b6458933b7b.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:4552

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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