Malware Analysis Report

2024-11-16 13:07

Sample ID 240321-yx72tsag8z
Target Client-built.exe
SHA256 da50be0c78d14cbb6775a20b3931709d24b43e9a286e6b2332702738e7f446b7
Tags
discordrat persistence rat rootkit stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

da50be0c78d14cbb6775a20b3931709d24b43e9a286e6b2332702738e7f446b7

Threat Level: Known bad

The file Client-built.exe was found to be: Known bad.

Malicious Activity Summary

discordrat persistence rat rootkit stealer

Discordrat family

Discord RAT

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-21 20:11

Signatures

Discordrat family

discordrat

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-21 20:10

Reported

2024-03-21 20:13

Platform

win10v2004-20240226-en

Max time kernel

141s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Suspicious use of AdjustPrivilegeToken

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

Processes

C:\Users\Admin\AppData\Local\Temp\Client-built.exe

"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 gateway.discord.gg udp
US 162.159.136.234:443 gateway.discord.gg tcp
US 8.8.8.8:53 234.136.159.162.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 185.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 195.177.78.104.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 140.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 181.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 81.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 202.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 174.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 80.179.17.96.in-addr.arpa udp

Files

memory/2948-0-0x0000022787060000-0x0000022787078000-memory.dmp

memory/2948-1-0x00000227A16D0000-0x00000227A1892000-memory.dmp

memory/2948-2-0x00007FFA8BA20000-0x00007FFA8C4E1000-memory.dmp

memory/2948-3-0x00000227A1A90000-0x00000227A1AA0000-memory.dmp

memory/2948-4-0x00000227A1FD0000-0x00000227A24F8000-memory.dmp

memory/2948-5-0x00007FFA8BA20000-0x00007FFA8C4E1000-memory.dmp

memory/2948-6-0x00000227A1A90000-0x00000227A1AA0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-21 20:10

Reported

2024-03-21 20:13

Platform

win7-20240221-en

Max time kernel

120s

Max time network

124s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2144 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\WerFault.exe
PID 2144 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\WerFault.exe
PID 2144 wrote to memory of 2844 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Client-built.exe

"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2144 -s 604

Network

N/A

Files

memory/2144-0-0x000000013FFD0000-0x000000013FFE8000-memory.dmp

memory/2144-1-0x000007FEF5100000-0x000007FEF5AEC000-memory.dmp

memory/2144-2-0x000000001BAD0000-0x000000001BB50000-memory.dmp

memory/2144-3-0x000007FEF5100000-0x000007FEF5AEC000-memory.dmp

memory/2144-4-0x000000001BAD0000-0x000000001BB50000-memory.dmp