9acae17f347e2cf0f354fc779b4012d127b2cd18295b7e69b6045262e947ad8c

Analysis

max time kernel
135s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
12/11/2023, 19:55

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General

Target

9acae17f347e2cf0f354fc779b4012d127b2cd18295b7e69b6045262e947ad8c.exe
Size

3.6MB
MD5

b811aae1d9bdeec06b38424a4663c0f7
SHA1

159a5aa358b41a0beabbf237fb61b1507a60d17d
SHA256

9acae17f347e2cf0f354fc779b4012d127b2cd18295b7e69b6045262e947ad8c
SHA512

285f7acd59242ceb886da71877a2575f33acd5ce88e4f37ba323694ce4117f86b94744064d94f54f4619da6a5846ca91b9bf68af695b6a1bc9c8308d8a1f85ea
SSDEEP

49152:D08OhxtUg9OUi82w6aQp9dgS1GUL38XhCOYc3iJXe9emEPGKOPkQThMYRAnm7LBi:D08vdsGaQNgS1C6eGnpuPqd

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1240	9acae17f347e2cf0f354fc779b4012d127b2cd18295b7e69b6045262e947ad8c.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:	9acae17f347e2cf0f354fc779b4012d127b2cd18295b7e69b6045262e947ad8c.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	9acae17f347e2cf0f354fc779b4012d127b2cd18295b7e69b6045262e947ad8c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1240	9acae17f347e2cf0f354fc779b4012d127b2cd18295b7e69b6045262e947ad8c.exe
1240	9acae17f347e2cf0f354fc779b4012d127b2cd18295b7e69b6045262e947ad8c.exe

C:\Users\Admin\AppData\Local\Temp\9acae17f347e2cf0f354fc779b4012d127b2cd18295b7e69b6045262e947ad8c.exe
"C:\Users\Admin\AppData\Local\Temp\9acae17f347e2cf0f354fc779b4012d127b2cd18295b7e69b6045262e947ad8c.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:1240

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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