a6600ac3f3fc27da23bea304013537591899effa6b2514720c41dfe242529366

Analysis

max time kernel
120s
max time network
123s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 16:36

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General

Target

a6600ac3f3fc27da23bea304013537591899effa6b2514720c41dfe242529366.exe
Size

3.6MB
MD5

ed0ed3b90a54a6caa1a1a6deefb1b283
SHA1

ae17e48d558dff3e3b4a341eb29a06fd5d222f3e
SHA256

a6600ac3f3fc27da23bea304013537591899effa6b2514720c41dfe242529366
SHA512

43237e5af92cb151b5c4bc664c162a3ff88076df57b3797c76110bfda356c761b9be3a10f3569580f89950fcb663c0ccfcc74a78db9834df057bdcefd3021519
SSDEEP

49152:n+2/M1h7X2Yq6lLITqTqiWab1T5NpWDD06Hhy1OD3+WDx1rQqIPsNTp7UY3w1l4z:n+2/6yNK0TqTWab1Cv1rBgYm6Lq7eV

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
2244	a6600ac3f3fc27da23bea304013537591899effa6b2514720c41dfe242529366.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:	a6600ac3f3fc27da23bea304013537591899effa6b2514720c41dfe242529366.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	a6600ac3f3fc27da23bea304013537591899effa6b2514720c41dfe242529366.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2244	a6600ac3f3fc27da23bea304013537591899effa6b2514720c41dfe242529366.exe

C:\Users\Admin\AppData\Local\Temp\a6600ac3f3fc27da23bea304013537591899effa6b2514720c41dfe242529366.exe
"C:\Users\Admin\AppData\Local\Temp\a6600ac3f3fc27da23bea304013537591899effa6b2514720c41dfe242529366.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:2244

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/2244-9-0x0000000000120000-0x000000000012A000-memory.dmp

Filesize
40KB

Download
memory/2244-8-0x0000000000120000-0x000000000012A000-memory.dmp

Filesize
40KB

Download
memory/2244-10-0x0000000000120000-0x000000000012A000-memory.dmp

Filesize
40KB

Download
memory/2244-11-0x0000000000120000-0x000000000012A000-memory.dmp

Filesize
40KB

Download