Malware Analysis Report

2024-09-11 09:36

Sample ID 240602-pvywpsde46
Target Onnx File Installer.rar
SHA256 d624951bfc5e38a018beb94c1c8acb97a6becca52e6d069b156b5e55608f857a
Tags
discordrat persistence rat rootkit stealer spyware
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: behavioral5

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral6

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

d624951bfc5e38a018beb94c1c8acb97a6becca52e6d069b156b5e55608f857a

Threat Level: Known bad

The file Onnx File Installer.rar was found to be: Known bad.

Malicious Activity Summary

discordrat persistence rat rootkit stealer spyware

Discord RAT

Discordrat family

Downloads MZ/PE file

Reads user/profile data of web browsers

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Creates scheduled task(s)

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Scheduled Task/Job
T1053
Persistence
TA0003
Scheduled Task/Job
T1053
Privilege Escalation
TA0004
Scheduled Task/Job
T1053
Defense Evasion
TA0005
Credential Access
TA0006
Unsecured Credentials
T1552
Credentials In Files
T1552.001
Discovery
TA0007
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Data from Local System
T1005
Exfiltration
TA0010
Command and Control
TA0011
Web Service
T1102
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-02 12:39

Signatures

Discordrat family

discordrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-02 12:39

Reported

2024-06-02 12:42

Platform

win7-20240508-en

Max time kernel

122s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1932 wrote to memory of 3044 N/A C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe C:\Windows\system32\WerFault.exe
PID 1932 wrote to memory of 3044 N/A C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe C:\Windows\system32\WerFault.exe
PID 1932 wrote to memory of 3044 N/A C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe

"C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 1932 -s 600

Network

N/A

Files

memory/1932-0-0x000007FEF52E3000-0x000007FEF52E4000-memory.dmp

memory/1932-1-0x000000013F560000-0x000000013F578000-memory.dmp

memory/1932-2-0x000007FEF52E0000-0x000007FEF5CCC000-memory.dmp

memory/1932-3-0x000007FEF52E0000-0x000007FEF5CCC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-02 12:39

Reported

2024-06-02 12:42

Platform

win10v2004-20240426-en

Max time kernel

92s

Max time network

126s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.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 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 raw.githubusercontent.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 discord.com N/A N/A
N/A discord.com N/A N/A

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\SCHTASKS.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4892 wrote to memory of 1992 N/A C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe C:\Windows\SYSTEM32\SCHTASKS.exe
PID 4892 wrote to memory of 1992 N/A C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe C:\Windows\SYSTEM32\SCHTASKS.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe

"C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe"

C:\Windows\SYSTEM32\SCHTASKS.exe

"SCHTASKS.exe" /create /tn "$77Onnx File Installer.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Onnx File Installer.exe'" /sc onlogon /rl HIGHEST

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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
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 8.8.8.8:53 232.138.159.162.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.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 162.159.138.232:443 discord.com tcp
US 8.8.8.8:53 253.102.89.159.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 162.159.138.232:443 discord.com tcp
US 8.8.8.8:53 raw.githubusercontent.com udp
US 185.199.108.133:443 raw.githubusercontent.com tcp
US 162.159.138.232:443 discord.com tcp
US 162.159.138.232:443 discord.com tcp
US 8.8.8.8:53 133.108.199.185.in-addr.arpa udp
US 185.199.108.133:443 raw.githubusercontent.com tcp
US 162.159.138.232:443 discord.com tcp
US 162.159.138.232:443 discord.com tcp
US 162.159.138.232:443 discord.com tcp
US 162.159.138.232:443 discord.com tcp
US 8.8.8.8:53 22.236.111.52.in-addr.arpa udp

Files

memory/4892-0-0x000001E3373D0000-0x000001E3373E8000-memory.dmp

memory/4892-1-0x00007FF825643000-0x00007FF825645000-memory.dmp

memory/4892-2-0x000001E351990000-0x000001E351B52000-memory.dmp

memory/4892-3-0x00007FF825640000-0x00007FF826101000-memory.dmp

memory/4892-4-0x000001E352190000-0x000001E3526B8000-memory.dmp

memory/4892-5-0x00007FF825643000-0x00007FF825645000-memory.dmp

memory/4892-6-0x00007FF825640000-0x00007FF826101000-memory.dmp

memory/4892-7-0x000001E351CE0000-0x000001E351D56000-memory.dmp

memory/4892-8-0x000001E337910000-0x000001E337922000-memory.dmp

memory/4892-9-0x000001E351C60000-0x000001E351C7E000-memory.dmp

memory/4892-10-0x000001E339140000-0x000001E33914E000-memory.dmp

Analysis: behavioral3

Detonation Overview

Submitted

2024-06-02 12:39

Reported

2024-06-02 12:42

Platform

win10v2004-20240508-en

Max time kernel

134s

Max time network

103s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\api-ms-win-crt-stdio-l1-1-0.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\api-ms-win-crt-stdio-l1-1-0.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 107.211.222.173.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 243.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.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

Files

N/A

Analysis: behavioral4

Detonation Overview

Submitted

2024-06-02 12:39

Reported

2024-06-02 12:42

Platform

win10v2004-20240426-en

Max time kernel

93s

Max time network

95s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\api-ms-win-crt-string-l1-1-0.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\api-ms-win-crt-string-l1-1-0.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

N/A

Analysis: behavioral5

Detonation Overview

Submitted

2024-06-02 12:39

Reported

2024-06-02 12:42

Platform

win7-20240221-en

Max time kernel

121s

Max time network

126s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\libcurl.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\libcurl.dll,#1

Network

N/A

Files

N/A

Analysis: behavioral6

Detonation Overview

Submitted

2024-06-02 12:39

Reported

2024-06-02 12:42

Platform

win10v2004-20240426-en

Max time kernel

150s

Max time network

150s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\libcurl.dll,#1

Signatures

N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\libcurl.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 243.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

N/A