Malware Analysis Report

2024-09-11 09:20

Sample ID 240616-rzt5esxbjf
Target Client-built.exe
SHA256 2df3388f1981b32ad6e83789b3051d32894388be5aa997bebfe39ce370f5249c
Tags
discordrat persistence ransomware rat rootkit spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2df3388f1981b32ad6e83789b3051d32894388be5aa997bebfe39ce370f5249c

Threat Level: Known bad

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

Malicious Activity Summary

discordrat persistence ransomware rat rootkit spyware stealer

Discordrat family

Discord RAT

Downloads MZ/PE file

Reads user/profile data of web browsers

Legitimate hosting services abused for malware hosting/C2

Sets desktop wallpaper using registry

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Unsecured Credentials
T1552
Credentials In Files
T1552.001
Discovery
TA0007
Lateral Movement
TA0008
Collection
TA0009
Data from Local System
T1005
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Defacement
T1491
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-16 14:38

Signatures

Discordrat family

discordrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-16 14:38

Reported

2024-06-16 14:40

Platform

win10v2004-20240611-en

Max time kernel

148s

Max time network

150s

Command Line

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

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Downloads MZ/PE file

Reads user/profile data of web browsers

spyware stealer

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
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A raw.githubusercontent.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A raw.githubusercontent.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A
N/A discord.com N/A N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\tmp13D1.tmp.png" C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 184 wrote to memory of 1792 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\SYSTEM32\cmd.exe
PID 184 wrote to memory of 1792 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\SYSTEM32\cmd.exe
PID 184 wrote to memory of 4568 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\SYSTEM32\cmd.exe
PID 184 wrote to memory of 4568 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\SYSTEM32\cmd.exe
PID 4568 wrote to memory of 4520 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\cmd.exe
PID 4568 wrote to memory of 4520 N/A C:\Windows\SYSTEM32\cmd.exe C:\Windows\system32\cmd.exe

Processes

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

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

C:\Windows\SYSTEM32\cmd.exe

"cmd.exe" /C

C:\Windows\SYSTEM32\cmd.exe

"cmd.exe" /C cmd

C:\Windows\system32\cmd.exe

cmd

Network

Country Destination Domain Proto
US 8.8.8.8:53 gateway.discord.gg udp
US 162.159.133.234:443 gateway.discord.gg tcp
US 8.8.8.8:53 discord.com udp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 234.133.159.162.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 geolocation-db.com udp
DE 159.89.102.253:443 geolocation-db.com tcp
BE 88.221.83.218:443 www.bing.com tcp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 233.128.159.162.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 218.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 253.102.89.159.in-addr.arpa udp
US 162.159.128.233:443 discord.com tcp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 162.159.128.233:443 discord.com tcp
US 162.159.128.233:443 discord.com tcp
US 162.159.128.233:443 discord.com tcp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 cdn.discordapp.com udp
US 162.159.129.233:443 cdn.discordapp.com tcp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 233.129.159.162.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 162.159.128.233:443 discord.com tcp
US 162.159.128.233:443 discord.com tcp
US 162.159.128.233:443 discord.com tcp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 raw.githubusercontent.com udp
US 185.199.108.133:443 raw.githubusercontent.com tcp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 133.108.199.185.in-addr.arpa udp
US 162.159.128.233:443 discord.com tcp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 14.179.89.13.in-addr.arpa udp

Files

memory/184-0-0x000001AFBABD0000-0x000001AFBABE8000-memory.dmp

memory/184-1-0x00007FFC51413000-0x00007FFC51415000-memory.dmp

memory/184-2-0x000001AFD5140000-0x000001AFD5302000-memory.dmp

memory/184-3-0x00007FFC51410000-0x00007FFC51ED1000-memory.dmp

memory/184-4-0x000001AFD5940000-0x000001AFD5E68000-memory.dmp

memory/184-5-0x00007FFC51413000-0x00007FFC51415000-memory.dmp

memory/184-6-0x00007FFC51410000-0x00007FFC51ED1000-memory.dmp

memory/184-9-0x000001AFD8E10000-0x000001AFD90DA000-memory.dmp