82746ee6fc49c4dbd523f298713c51f763f30599765204099c79bdd1632dfa2c

Analysis

max time kernel
141s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
24/11/2023, 20:08

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General

Target

82746ee6fc49c4dbd523f298713c51f763f30599765204099c79bdd1632dfa2c.exe
Size

3.6MB
MD5

7a2c8ffd174c531c00e6897d3721e667
SHA1

9f8daa203bdb43fad18dadc426f99aebf9826961
SHA256

82746ee6fc49c4dbd523f298713c51f763f30599765204099c79bdd1632dfa2c
SHA512

17b70fc7807f4f7d8892c5cf1367b1b2199db888cd320ad3d9b005d7ecfa52f82862b4de67691c8068fc20903e9e687c335501601af4073e114d40f22a7232e7
SSDEEP

49152:S+2/M1h7X2Yq6lLITqTqiWab1T5NpWDD06Hhy1OD3+WDx1rQqIPsNTp7UYmw1l48:S+2/6yNK0TqTWab1Cv1rBLYMSoq7ev

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1944	82746ee6fc49c4dbd523f298713c51f763f30599765204099c79bdd1632dfa2c.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:	82746ee6fc49c4dbd523f298713c51f763f30599765204099c79bdd1632dfa2c.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	82746ee6fc49c4dbd523f298713c51f763f30599765204099c79bdd1632dfa2c.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1944	82746ee6fc49c4dbd523f298713c51f763f30599765204099c79bdd1632dfa2c.exe
1944	82746ee6fc49c4dbd523f298713c51f763f30599765204099c79bdd1632dfa2c.exe

C:\Users\Admin\AppData\Local\Temp\82746ee6fc49c4dbd523f298713c51f763f30599765204099c79bdd1632dfa2c.exe
"C:\Users\Admin\AppData\Local\Temp\82746ee6fc49c4dbd523f298713c51f763f30599765204099c79bdd1632dfa2c.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:1944

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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