Malware Analysis Report

2024-09-11 09:14

Sample ID 240623-esfx1azbke
Target RobloxRule34.exe
SHA256 134bc640e8cc14d6c30f91407a8c812a63319072343bbf8a6bc2aaf3a902d44b
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 Overview

score
10/10

SHA256

134bc640e8cc14d6c30f91407a8c812a63319072343bbf8a6bc2aaf3a902d44b

Threat Level: Known bad

The file RobloxRule34.exe was found to be: Known bad.

Malicious Activity Summary

discordrat persistence rat rootkit stealer

Discord RAT

Checks computer location settings

Executes dropped EXE

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Enumerates physical storage devices

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
Credential Access
TA0006
Discovery
TA0007
Query Registry
T1012
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

2024-06-23 04:11

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-23 04:11

Reported

2024-06-23 04:48

Platform

win10v2004-20240508-en

Max time kernel

1641s

Max time network

1652s

Command Line

"C:\Users\Admin\AppData\Local\Temp\RobloxRule34.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\RobloxRule34.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3468 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\RobloxRule34.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe
PID 3468 wrote to memory of 1112 N/A C:\Users\Admin\AppData\Local\Temp\RobloxRule34.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe

Processes

C:\Users\Admin\AppData\Local\Temp\RobloxRule34.exe

"C:\Users\Admin\AppData\Local\Temp\RobloxRule34.exe"

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe

"C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 gateway.discord.gg udp

Files

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe

MD5 c2207566970ad0379a62da59e3c4caff
SHA1 59759d884744c5c025fe800a0b86b63555f7bfe9
SHA256 61247d55a049a1a16833a6be90b50ceef20340db7b31181b07d95cbc345dd1ba
SHA512 2b6a2684c1a5db78fc1080c26b7263bb5c04eb760d142369cd4d987b35ff9fd76092fe3ceae0633f26f98a12b4d1b5b4aca7071a7022d22d264237dbf1a488bc

memory/1112-12-0x0000022853EA0000-0x0000022853EB8000-memory.dmp

memory/1112-13-0x00007FFEFACA3000-0x00007FFEFACA5000-memory.dmp

memory/1112-14-0x000002286E4C0000-0x000002286E682000-memory.dmp

memory/1112-15-0x00007FFEFACA0000-0x00007FFEFB761000-memory.dmp

memory/1112-16-0x00007FFEFACA0000-0x00007FFEFB761000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-23 04:11

Reported

2024-06-23 04:20

Platform

win11-20240508-en

Max time kernel

45s

Max time network

39s

Command Line

"C:\Users\Admin\AppData\Local\Temp\RobloxRule34.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe N/A

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

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4184 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\RobloxRule34.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe
PID 4184 wrote to memory of 1668 N/A C:\Users\Admin\AppData\Local\Temp\RobloxRule34.exe C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe

Processes

C:\Users\Admin\AppData\Local\Temp\RobloxRule34.exe

"C:\Users\Admin\AppData\Local\Temp\RobloxRule34.exe"

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe

"C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 gateway.discord.gg udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 162.159.135.234:443 gateway.discord.gg tcp
US 8.8.8.8:53 discord.com udp
US 8.8.8.8:53 234.135.159.162.in-addr.arpa udp
US 162.159.137.232:443 discord.com tcp
US 8.8.8.8:53 geolocation-db.com udp
DE 159.89.102.253:443 geolocation-db.com tcp
US 162.159.137.232:443 discord.com tcp
US 8.8.8.8:53 253.102.89.159.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

C:\Users\Admin\AppData\Local\Temp\RarSFX0\Client-built.exe

MD5 c2207566970ad0379a62da59e3c4caff
SHA1 59759d884744c5c025fe800a0b86b63555f7bfe9
SHA256 61247d55a049a1a16833a6be90b50ceef20340db7b31181b07d95cbc345dd1ba
SHA512 2b6a2684c1a5db78fc1080c26b7263bb5c04eb760d142369cd4d987b35ff9fd76092fe3ceae0633f26f98a12b4d1b5b4aca7071a7022d22d264237dbf1a488bc

memory/1668-12-0x00007FFCB4C83000-0x00007FFCB4C85000-memory.dmp

memory/1668-13-0x000002B909FC0000-0x000002B909FD8000-memory.dmp

memory/1668-14-0x000002B9246C0000-0x000002B924882000-memory.dmp

memory/1668-15-0x00007FFCB4C80000-0x00007FFCB5742000-memory.dmp

memory/1668-16-0x000002B9265C0000-0x000002B926AE8000-memory.dmp

memory/1668-17-0x00007FFCB4C80000-0x00007FFCB5742000-memory.dmp