Malware Analysis Report

2024-11-16 13:05

Sample ID 240824-nz677sydka
Target Clientbuilt.exe
SHA256 9d071c0f4585b9e6db048911dccbefef5ed1101920bff5c315e50e3b487b7198
Tags
discordrat persistence rat rootkit stealer
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

9d071c0f4585b9e6db048911dccbefef5ed1101920bff5c315e50e3b487b7198

Threat Level: Known bad

The file Clientbuilt.exe was found to be: Known bad.

Malicious Activity Summary

discordrat persistence rat rootkit stealer

Discordrat family

Discord RAT

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-24 11:51

Signatures

Discordrat family

discordrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-24 11:51

Reported

2024-08-24 11:53

Platform

win7-20240704-en

Max time kernel

117s

Max time network

118s

Command Line

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

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2520 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\Clientbuilt.exe C:\Windows\system32\WerFault.exe
PID 2520 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\Clientbuilt.exe C:\Windows\system32\WerFault.exe
PID 2520 wrote to memory of 2252 N/A C:\Users\Admin\AppData\Local\Temp\Clientbuilt.exe C:\Windows\system32\WerFault.exe

Processes

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

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

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2520 -s 596

Network

N/A

Files

memory/2520-0-0x000007FEF66B3000-0x000007FEF66B4000-memory.dmp

memory/2520-1-0x000000013F3A0000-0x000000013F3B8000-memory.dmp

memory/2520-2-0x000007FEF66B0000-0x000007FEF709C000-memory.dmp

memory/2520-3-0x000007FEF66B3000-0x000007FEF66B4000-memory.dmp

memory/2520-4-0x000007FEF66B0000-0x000007FEF709C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-24 11:51

Reported

2024-08-24 11:53

Platform

win10v2004-20240802-en

Max time kernel

134s

Max time network

129s

Command Line

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

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Legitimate hosting services abused for malware hosting/C2

Description Indicator Process Target
N/A discord.com N/A N/A
N/A discord.com N/A N/A

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 gateway.discord.gg udp
US 8.8.8.8:53 g.bing.com udp
US 150.171.27.10:443 g.bing.com tcp
US 162.159.134.234:443 gateway.discord.gg tcp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 discord.com udp
US 162.159.137.232:443 discord.com tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 234.134.159.162.in-addr.arpa udp
US 8.8.8.8:53 geolocation-db.com udp
DE 159.89.102.253:443 geolocation-db.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 232.137.159.162.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp

Files

memory/4876-0-0x00007FFA10843000-0x00007FFA10845000-memory.dmp

memory/4876-1-0x00000203C61B0000-0x00000203C61C8000-memory.dmp

memory/4876-2-0x00000203E07A0000-0x00000203E0962000-memory.dmp

memory/4876-3-0x00007FFA10840000-0x00007FFA11301000-memory.dmp

memory/4876-4-0x00000203E0FE0000-0x00000203E1508000-memory.dmp

memory/4876-5-0x00007FFA10843000-0x00007FFA10845000-memory.dmp

memory/4876-6-0x00007FFA10840000-0x00007FFA11301000-memory.dmp