213b4330054c360bc072fc87fd64d98066d8c1619e518c9b393d1187460561a7

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
28-02-2024 20:49

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General

Target

213b4330054c360bc072fc87fd64d98066d8c1619e518c9b393d1187460561a7.exe
Size

3.6MB
MD5

7d156e6a972ea7824431002d9d4d2bca
SHA1

0eb0201d5dad0f089d61d548d013280544238b6b
SHA256

213b4330054c360bc072fc87fd64d98066d8c1619e518c9b393d1187460561a7
SHA512

173495549b7318aaee1363c138d7676ee726ab378d0c1028625971dff5b32daafd1209c2ce60e392720868b2b75de9663760f9f08414787bf98d1dd4888a0ff8
SSDEEP

49152:/tRtavkT9tMpBeKWyT3fezuwkkxTqcUC4HTBgi1SN238WFPt0TI6k7vdSZWIXzkI:/tRXB+SKW+vezulo23R3fgqE

Score

7^/10

bootkit persistence

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
1228	213b4330054c360bc072fc87fd64d98066d8c1619e518c9b393d1187460561a7.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:	213b4330054c360bc072fc87fd64d98066d8c1619e518c9b393d1187460561a7.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	213b4330054c360bc072fc87fd64d98066d8c1619e518c9b393d1187460561a7.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1228	213b4330054c360bc072fc87fd64d98066d8c1619e518c9b393d1187460561a7.exe

C:\Users\Admin\AppData\Local\Temp\213b4330054c360bc072fc87fd64d98066d8c1619e518c9b393d1187460561a7.exe
"C:\Users\Admin\AppData\Local\Temp\213b4330054c360bc072fc87fd64d98066d8c1619e518c9b393d1187460561a7.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
PID:1228

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/1228-4-0x0000000000260000-0x000000000026A000-memory.dmp

Filesize
40KB

Download
memory/1228-5-0x0000000000260000-0x000000000026A000-memory.dmp

Filesize
40KB

Download
memory/1228-10-0x0000000000260000-0x000000000026A000-memory.dmp

Filesize
40KB

Download
memory/1228-11-0x0000000000260000-0x000000000026A000-memory.dmp

Filesize
40KB

Download