Malware Analysis Report

2025-08-05 12:47

Sample ID 240122-zdjqkadeh3
Target b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583
SHA256 b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583
Tags
metasploit backdoor bootkit persistence trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583

Threat Level: Known bad

The file b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583 was found to be: Known bad.

Malicious Activity Summary

metasploit backdoor bootkit persistence trojan

MetaSploit

Loads dropped DLL

Writes to the Master Boot Record (MBR)

Enumerates connected drives

Unsigned PE

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-22 20:36

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-22 20:36

Reported

2024-01-22 20:38

Platform

win7-20231215-en

Max time kernel

120s

Max time network

125s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583.exe"

Signatures

MetaSploit

trojan backdoor metasploit

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583.exe

"C:\Users\Admin\AppData\Local\Temp\b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583.exe"

Network

Country Destination Domain Proto
N/A 192.168.223.130:1453 tcp
US 8.8.8.8:53 master.etl.desktop.qq.com udp
US 8.8.8.8:53 oth.eve.mdt.qq.com udp
CN 157.255.4.39:443 master.etl.desktop.qq.com tcp
SG 101.33.47.206:8081 oth.eve.mdt.qq.com tcp
CN 157.255.4.39:443 master.etl.desktop.qq.com tcp
CN 113.105.95.120:443 tcp
CN 125.39.120.82:443 tcp

Files

memory/2300-0-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2300-1-0x0000000000230000-0x0000000000231000-memory.dmp

\Users\Admin\AppData\Local\Tencent\TxGameAssistant\TGBDownloader\dr.dll

MD5 2814acbd607ba47bdbcdf6ac3076ee95
SHA1 50ab892071bed2bb2365ca1d4bf5594e71c6b13b
SHA256 5904a7e4d97eeac939662c3638a0e145f64ff3dd0198f895c4bf0337595c6a67
SHA512 34c73014ffc8d38d6dd29f4f84c8f4f9ea971bc131f665f65b277f453504d5efc2d483a792cdea610c5e0544bf3997b132dcdbe37224912c5234c15cdb89d498

memory/2300-6-0x00000000003F0000-0x00000000003FA000-memory.dmp

memory/2300-7-0x00000000003F0000-0x00000000003FA000-memory.dmp

memory/2300-12-0x00000000003F0000-0x00000000003FA000-memory.dmp

memory/2300-13-0x00000000003F0000-0x00000000003FA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-22 20:36

Reported

2024-01-22 20:38

Platform

win10v2004-20231215-en

Max time kernel

138s

Max time network

157s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583.exe"

Signatures

MetaSploit

trojan backdoor metasploit

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583.exe

"C:\Users\Admin\AppData\Local\Temp\b38c50805347b551640cac5223de86b0f98e73fe7c786000411aae3517d6d583.exe"

Network

Country Destination Domain Proto
N/A 192.168.223.130:1453 tcp
US 8.8.8.8:53 189.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 master.etl.desktop.qq.com udp
US 8.8.8.8:53 oth.eve.mdt.qq.com udp
SG 101.33.47.68:8081 oth.eve.mdt.qq.com tcp
CN 157.255.4.39:443 master.etl.desktop.qq.com tcp
US 8.8.8.8:53 68.47.33.101.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
CN 157.255.4.39:443 master.etl.desktop.qq.com tcp
US 8.8.8.8:53 23.160.77.104.in-addr.arpa udp
CN 113.105.95.120:443 tcp
US 8.8.8.8:53 186.178.17.96.in-addr.arpa udp
CN 125.39.120.82:443 tcp
US 8.8.8.8:53 181.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 210.143.182.52.in-addr.arpa udp

Files

memory/2104-1-0x0000000000890000-0x0000000000891000-memory.dmp

C:\Users\Admin\AppData\Local\Tencent\TxGameAssistant\TGBDownloader\dr.dll

MD5 2814acbd607ba47bdbcdf6ac3076ee95
SHA1 50ab892071bed2bb2365ca1d4bf5594e71c6b13b
SHA256 5904a7e4d97eeac939662c3638a0e145f64ff3dd0198f895c4bf0337595c6a67
SHA512 34c73014ffc8d38d6dd29f4f84c8f4f9ea971bc131f665f65b277f453504d5efc2d483a792cdea610c5e0544bf3997b132dcdbe37224912c5234c15cdb89d498

memory/2104-11-0x0000000000890000-0x0000000000891000-memory.dmp