Malware Analysis Report

2024-09-11 09:35

Sample ID 240603-sszl1abh64
Target Client-built.exe
SHA256 0ff130c66f8539585e58166cf27ff4f452baa925106e68f0ee39ab16933f0527
Tags
discordrat persistence rat rootkit stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

0ff130c66f8539585e58166cf27ff4f452baa925106e68f0ee39ab16933f0527

Threat Level: Known bad

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

Malicious Activity Summary

discordrat persistence rat rootkit stealer

Discord RAT

Discordrat family

Adds Run key to start application

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Discovery
TA0007
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-03 15:23

Signatures

Discordrat family

discordrat

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 15:23

Reported

2024-06-03 15:26

Platform

win10v2004-20240508-en

Max time kernel

84s

Max time network

86s

Command Line

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe N/A
Token: SeShutdownPrivilege 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 162.159.135.234:443 gateway.discord.gg tcp
US 8.8.8.8:53 discord.com udp
US 162.159.138.232:443 discord.com tcp
US 8.8.8.8:53 234.135.159.162.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.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 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 162.159.138.232:443 discord.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 232.138.159.162.in-addr.arpa udp
US 8.8.8.8:53 140.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 253.102.89.159.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 162.159.138.232:443 discord.com tcp
US 162.159.138.232:443 discord.com tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 162.159.138.232:443 discord.com tcp
US 162.159.138.232:443 discord.com tcp
US 8.8.8.8:53 216.107.17.2.in-addr.arpa udp

Files

memory/2564-0-0x00007FFA73BC3000-0x00007FFA73BC5000-memory.dmp

memory/2564-1-0x000002B562540000-0x000002B562558000-memory.dmp

memory/2564-2-0x000002B57CC00000-0x000002B57CDC2000-memory.dmp

memory/2564-3-0x00007FFA73BC0000-0x00007FFA74681000-memory.dmp

memory/2564-4-0x000002B57D400000-0x000002B57D928000-memory.dmp

memory/2564-5-0x00007FFA73BC3000-0x00007FFA73BC5000-memory.dmp

memory/2564-6-0x00007FFA73BC0000-0x00007FFA74681000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 15:23

Reported

2024-06-03 15:27

Platform

win7-20240221-en

Max time kernel

137s

Max time network

128s

Command Line

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

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\RESTART_STICKY_NOTES = "C:\\Windows\\system32\\StikyNot.exe" C:\Windows\system32\StikyNot.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\system32\StikyNot.exe N/A
N/A N/A C:\Windows\system32\StikyNot.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2248 wrote to memory of 2832 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\WerFault.exe
PID 2248 wrote to memory of 2832 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\WerFault.exe
PID 2248 wrote to memory of 2832 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 2248 -s 596

C:\Windows\system32\StikyNot.exe

"C:\Windows\system32\StikyNot.exe"

Network

N/A

Files

memory/2248-0-0x000007FEF5723000-0x000007FEF5724000-memory.dmp

memory/2248-1-0x000000013F1F0000-0x000000013F208000-memory.dmp

memory/2248-2-0x000007FEF5720000-0x000007FEF610C000-memory.dmp

memory/2248-3-0x000007FEF5720000-0x000007FEF610C000-memory.dmp

memory/2600-6-0x00000000022E0000-0x00000000022E1000-memory.dmp

memory/2600-7-0x00000000022E0000-0x00000000022E1000-memory.dmp