Malware Analysis Report

2024-09-11 09:26

Sample ID 240523-sjjt7afd46
Target release.rar
SHA256 b20506eb3b8da2b97259b48af3b300870ae20995d3c1f05c203eff73c9bde8c2
Tags
discordrat persistence rat rootkit 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral3

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral4

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

b20506eb3b8da2b97259b48af3b300870ae20995d3c1f05c203eff73c9bde8c2

Threat Level: Known bad

The file release.rar 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

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Modifies registry class

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
System Information Discovery
T1082
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

2024-05-23 15:09

Signatures

Discordrat family

discordrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-23 15:09

Reported

2024-05-23 15:09

Platform

win7-20240221-en

Max time kernel

0s

Max time network

1s

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 1848 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\WerFault.exe
PID 1848 wrote to memory of 1752 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\WerFault.exe
PID 1848 wrote to memory of 1752 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 1848 -s 600

Network

N/A

Files

memory/1848-0-0x000007FEF5A13000-0x000007FEF5A14000-memory.dmp

memory/1848-1-0x000000013F0B0000-0x000000013F0C8000-memory.dmp

memory/1848-2-0x000007FEF5A10000-0x000007FEF63FC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-23 15:09

Reported

2024-05-23 15:09

Platform

win10v2004-20240508-en

Max time kernel

23s

Max time network

24s

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

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 162.159.130.234:443 gateway.discord.gg tcp
US 8.8.8.8:53 discord.com udp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 234.130.159.162.in-addr.arpa udp
US 8.8.8.8:53 18.24.18.2.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 233.128.159.162.in-addr.arpa udp
US 8.8.8.8:53 geolocation-db.com udp
US 8.8.8.8:53 136.32.126.40.in-addr.arpa udp
DE 159.89.102.253:443 geolocation-db.com tcp
US 8.8.8.8:53 253.102.89.159.in-addr.arpa udp
BE 2.17.107.106:443 www.bing.com tcp
US 162.159.128.233:443 discord.com tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
US 8.8.8.8:53 106.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 162.159.128.233:443 discord.com tcp
US 162.159.128.233:443 discord.com tcp

Files

memory/2356-1-0x00007FFFBA453000-0x00007FFFBA455000-memory.dmp

memory/2356-0-0x000002C3B6CB0000-0x000002C3B6CC8000-memory.dmp

memory/2356-2-0x000002C3D13F0000-0x000002C3D15B2000-memory.dmp

memory/2356-3-0x00007FFFBA450000-0x00007FFFBAF11000-memory.dmp

memory/2356-4-0x000002C3D1AF0000-0x000002C3D2018000-memory.dmp

memory/2356-5-0x00007FFFBA453000-0x00007FFFBA455000-memory.dmp

memory/2356-7-0x00007FFFBA450000-0x00007FFFBAF11000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-05-23 15:09

Reported

2024-05-23 15:09

Platform

win7-20240221-en

Max time kernel

1s

Max time network

4s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\invite-yourself.py

Signatures

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000_Classes\Local Settings C:\Windows\system32\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2884 wrote to memory of 3064 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 2884 wrote to memory of 3064 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe
PID 2884 wrote to memory of 3064 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\rundll32.exe

Processes

C:\Windows\system32\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\invite-yourself.py

C:\Windows\system32\rundll32.exe

"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\invite-yourself.py

Network

N/A

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-05-23 15:09

Reported

2024-05-23 15:09

Platform

win10v2004-20240508-en

Max time kernel

32s

Max time network

34s

Command Line

cmd /c C:\Users\Admin\AppData\Local\Temp\invite-yourself.py

Signatures

Enumerates physical storage devices

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings C:\Windows\system32\cmd.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\Local Settings C:\Windows\system32\OpenWith.exe N/A

Suspicious use of SetWindowsHookEx

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

Processes

C:\Windows\system32\cmd.exe

cmd /c C:\Users\Admin\AppData\Local\Temp\invite-yourself.py

C:\Windows\system32\OpenWith.exe

C:\Windows\system32\OpenWith.exe -Embedding

Network

Country Destination Domain Proto
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 23.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
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 57.15.31.184.in-addr.arpa udp

Files

N/A