73bf62c8287684b69f1965a40049dda074c4e58f3024ae4bf34fb07a5b445680

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-02-2024 19:46

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General

Target

73bf62c8287684b69f1965a40049dda074c4e58f3024ae4bf34fb07a5b445680.exe
Size

3.4MB
MD5

41111f9df119ba7e3146a729b4c31f51
SHA1

54dd206920d115f23b6e3e04dc5eb3ec69b91617
SHA256

73bf62c8287684b69f1965a40049dda074c4e58f3024ae4bf34fb07a5b445680
SHA512

f731304ea6fbb87ebf0dbfef0dfb601cc6e3f5f5aea3f54008a6c7058c93e8d08ca60a4dd8bca2a2f70dba9f5a9a366787f679b140a3884c9250fe2a56da1160
SSDEEP

49152:7EjEamQb2OguN8Dfk5JEG14wv2QwnN4iTapOcaPKfjtD8cEOxeuxzS2hPV5T1gWR:7EjlmQbfgSgwvSnN4iVJuS0xJdzYUqM

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
2940	73bf62c8287684b69f1965a40049dda074c4e58f3024ae4bf34fb07a5b445680.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:	73bf62c8287684b69f1965a40049dda074c4e58f3024ae4bf34fb07a5b445680.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	73bf62c8287684b69f1965a40049dda074c4e58f3024ae4bf34fb07a5b445680.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2940	73bf62c8287684b69f1965a40049dda074c4e58f3024ae4bf34fb07a5b445680.exe

C:\Users\Admin\AppData\Local\Temp\73bf62c8287684b69f1965a40049dda074c4e58f3024ae4bf34fb07a5b445680.exe
"C:\Users\Admin\AppData\Local\Temp\73bf62c8287684b69f1965a40049dda074c4e58f3024ae4bf34fb07a5b445680.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:2940

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/2940-4-0x0000000000260000-0x000000000026A000-memory.dmp

Filesize
40KB

Download
memory/2940-5-0x0000000000260000-0x000000000026A000-memory.dmp

Filesize
40KB

Download
memory/2940-10-0x0000000000260000-0x000000000026A000-memory.dmp

Filesize
40KB

Download
memory/2940-11-0x0000000000260000-0x000000000026A000-memory.dmp

Filesize
40KB

Download