16bd5b87b590469df584938e5d245721c03dd44a79fdfa0db6afff416da85aaa

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03-05-2024 19:02

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General

Target

16bd5b87b590469df584938e5d245721c03dd44a79fdfa0db6afff416da85aaa.exe
Size

3.8MB
MD5

0d327e9baabdb324f54c6019fa2e5a96
SHA1

31328eb947d878af2fe78b5a1a5249273b838a8b
SHA256

16bd5b87b590469df584938e5d245721c03dd44a79fdfa0db6afff416da85aaa
SHA512

f10252a0d79a2e78e53996757404bd846815334cbe521db4f40914cba8aa00086befe24cdd68ded8bdc969af3c247fbdebe5ed39a5c17696972cb1a65288c95e
SSDEEP

98304:yEjlmQbfgSgwvSnN4iVJu+0xGZ6twFquI3rFql:yEjgQPXqdEtwYf3rFql

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
2248	16bd5b87b590469df584938e5d245721c03dd44a79fdfa0db6afff416da85aaa.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:	16bd5b87b590469df584938e5d245721c03dd44a79fdfa0db6afff416da85aaa.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	16bd5b87b590469df584938e5d245721c03dd44a79fdfa0db6afff416da85aaa.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2248	16bd5b87b590469df584938e5d245721c03dd44a79fdfa0db6afff416da85aaa.exe

C:\Users\Admin\AppData\Local\Temp\16bd5b87b590469df584938e5d245721c03dd44a79fdfa0db6afff416da85aaa.exe
"C:\Users\Admin\AppData\Local\Temp\16bd5b87b590469df584938e5d245721c03dd44a79fdfa0db6afff416da85aaa.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:2248

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

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

Filesize
74KB

MD5
2814acbd607ba47bdbcdf6ac3076ee95

SHA1
50ab892071bed2bb2365ca1d4bf5594e71c6b13b

SHA256
5904a7e4d97eeac939662c3638a0e145f64ff3dd0198f895c4bf0337595c6a67

SHA512
34c73014ffc8d38d6dd29f4f84c8f4f9ea971bc131f665f65b277f453504d5efc2d483a792cdea610c5e0544bf3997b132dcdbe37224912c5234c15cdb89d498

Download Submit
memory/2248-5-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download
memory/2248-4-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download
memory/2248-10-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download
memory/2248-11-0x0000000000160000-0x000000000016A000-memory.dmp

Filesize
40KB

Download