Malware Analysis Report

2025-03-15 07:47

Sample ID 240206-1fsxpaafgr
Target 482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689
SHA256 482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689
Tags
bootkit persistence isfb gozi
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689

Threat Level: Known bad

The file 482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689 was found to be: Known bad.

Malicious Activity Summary

bootkit persistence isfb gozi

Gozi family

Loads dropped DLL

Enumerates connected drives

Writes to the Master Boot Record (MBR)

Unsigned PE

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-02-06 21:35

Signatures

Gozi family

gozi

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-02-06 21:35

Reported

2024-02-06 21:39

Platform

win10v2004-20231215-en

Max time kernel

142s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689.exe"

Signatures

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689.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\482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689.exe

"C:\Users\Admin\AppData\Local\Temp\482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 oth.eve.mdt.qq.com udp
US 8.8.8.8:53 master.etl.desktop.qq.com udp
CN 157.255.4.39:443 master.etl.desktop.qq.com tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 202.178.17.96.in-addr.arpa udp
SG 101.33.47.206:8081 oth.eve.mdt.qq.com tcp
US 8.8.8.8:53 206.47.33.101.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
CN 157.255.4.39:443 master.etl.desktop.qq.com tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 150.1.37.23.in-addr.arpa udp
US 8.8.8.8:53 79.121.231.20.in-addr.arpa udp
CN 113.105.95.120:443 tcp
US 8.8.8.8:53 175.178.17.96.in-addr.arpa udp
CN 125.39.120.82:443 tcp
US 8.8.8.8:53 183.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 200.79.70.13.in-addr.arpa udp

Files

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

MD5 0e1feab6d2aca3b8bec77f8fdd3d9be6
SHA1 0137d871e8ceae190fbcb7e28ac16eb9203cd9bd
SHA256 36abb0d3545f67f034335a6b0e13bf00a92e1068ea57417c145a0386661b948f
SHA512 da947220d484277bd865a5805334475c89cd53f14c4f5ed57bcef58eb9490cce2474ba1dd3f06b672a41effee3f9702f7e403eb2851b246a6cc45666fddf7f70

Analysis: behavioral1

Detonation Overview

Submitted

2024-02-06 21:35

Reported

2024-02-06 21:39

Platform

win7-20231215-en

Max time kernel

118s

Max time network

135s

Command Line

"C:\Users\Admin\AppData\Local\Temp\482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689.exe"

Signatures

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\F: C:\Users\Admin\AppData\Local\Temp\482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689.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\482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689.exe

"C:\Users\Admin\AppData\Local\Temp\482d943751ea9de876542f40029c936b11ba3b8b983b8a24f66d2c17cc622689.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 master.etl.desktop.qq.com udp
CN 157.255.4.39:443 master.etl.desktop.qq.com tcp
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
CN 113.105.95.120:443 tcp
CN 125.39.120.82:443 tcp

Files

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

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

memory/2416-4-0x0000000000270000-0x000000000027A000-memory.dmp

memory/2416-7-0x0000000000270000-0x000000000027A000-memory.dmp