609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b

Analysis

max time kernel
93s
max time network
94s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03-06-2024 07:32

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General

Target

609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe
Size

3.5MB
MD5

395161331ce991c86036338cd9bce3ed
SHA1

4a6be0d34004a764cd95d4a201c6d9067b366c66
SHA256

609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b
SHA512

7c6cbaca73d4abeb5f700814c4c87a45e81eb63e759b0f8e95a5c8dbc3b5a1233618f0db7c074a07c5060f1a1f7954d529229c8371567b6c2a201c223e87e0bf
SSDEEP

49152:bEjEamQb2OguN8Dfk5JEG14wv2QwnN4iTapOcaPKfjtD8cEOxeuxzS2hPV5T1gWT:bEjlmQbfgSgwvSnN4iVJuh0xzr+IIq6

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

Processes:

609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe

pid process

2000 609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.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:

609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe

description ioc process

File opened (read-only) \??\F: 609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.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:

609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe

description ioc process

File opened for modification \??\PhysicalDrive0 609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe

description	ioc	process
File opened (read-only)	\??\F:	609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe

pid	process
2000	609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe
2000	609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe

C:\Users\Admin\AppData\Local\Temp\609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe
"C:\Users\Admin\AppData\Local\Temp\609c19fd3ef2e33446f268f538a12e5f88d6b0169aaaf7075405036874e3149b.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:2000

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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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