Malware Analysis Report

2024-11-16 13:06

Sample ID 240315-v58fsaed5x
Target Client-built.exe
SHA256 b443a47b136605e52aac37efa2c044a2d36e6a170b9e23d45e9abcaf0d6981a4
Tags
discordrat persistence rat rootkit stealer spyware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

b443a47b136605e52aac37efa2c044a2d36e6a170b9e23d45e9abcaf0d6981a4

Threat Level: Known bad

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

Malicious Activity Summary

discordrat persistence rat rootkit stealer spyware

Discordrat family

Discord RAT

Downloads MZ/PE file

Reads user/profile data of web browsers

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Uses Task Scheduler COM API

Creates scheduled task(s)

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-15 17:35

Signatures

Discordrat family

discordrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-15 17:35

Reported

2024-03-15 17:38

Platform

win7-20240220-en

Max time kernel

120s

Max time network

120s

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 1792 wrote to memory of 2836 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\WerFault.exe
PID 1792 wrote to memory of 2836 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\system32\WerFault.exe
PID 1792 wrote to memory of 2836 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 1792 -s 596

Network

N/A

Files

memory/1792-0-0x000000013FCA0000-0x000000013FCB8000-memory.dmp

memory/1792-1-0x000007FEF5760000-0x000007FEF614C000-memory.dmp

memory/1792-2-0x000000001B900000-0x000000001B980000-memory.dmp

memory/1792-3-0x000007FEF5760000-0x000007FEF614C000-memory.dmp

memory/1792-4-0x000000001B900000-0x000000001B980000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-15 17:35

Reported

2024-03-15 17:37

Platform

win10v2004-20240226-en

Max time kernel

70s

Max time network

84s

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 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
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

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\Client-built.exe N/A
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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3164 wrote to memory of 3192 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\SYSTEM32\SCHTASKS.exe
PID 3164 wrote to memory of 3192 N/A C:\Users\Admin\AppData\Local\Temp\Client-built.exe C:\Windows\SYSTEM32\SCHTASKS.exe

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\SYSTEM32\SCHTASKS.exe

"SCHTASKS.exe" /create /tn "$77Client-built.exe" /tr "'C:\Users\Admin\AppData\Local\Temp\Client-built.exe'" /sc onlogon /rl HIGHEST

Network

Country Destination Domain Proto
US 8.8.8.8:53 gateway.discord.gg udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 162.159.135.234:443 gateway.discord.gg tcp
US 8.8.8.8:53 234.135.159.162.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 discord.com 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 8.8.8.8:53 57.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 232.137.159.162.in-addr.arpa udp
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 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 162.159.137.232:443 discord.com tcp
US 162.159.137.232:443 discord.com tcp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 195.177.78.104.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 48.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 raw.githubusercontent.com udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 185.199.108.133:443 raw.githubusercontent.com tcp
US 8.8.8.8:53 33.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 133.108.199.185.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 47.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 50.134.221.88.in-addr.arpa udp
US 162.159.137.232:443 discord.com tcp
US 162.159.137.232:443 discord.com tcp
US 162.159.137.232:443 discord.com tcp
US 8.8.8.8:53 70.179.17.96.in-addr.arpa udp
US 162.159.137.232:443 discord.com tcp
US 8.8.8.8:53 77.179.17.96.in-addr.arpa udp

Files

memory/3164-0-0x000001FDA57F0000-0x000001FDA5808000-memory.dmp

memory/3164-1-0x000001FDBFEB0000-0x000001FDC0072000-memory.dmp

memory/3164-2-0x00007FFB677A0000-0x00007FFB68261000-memory.dmp

memory/3164-3-0x000001FDBFEA0000-0x000001FDBFEB0000-memory.dmp

memory/3164-4-0x000001FDC05B0000-0x000001FDC0AD8000-memory.dmp

memory/3164-5-0x00007FFB677A0000-0x00007FFB68261000-memory.dmp

memory/3164-6-0x000001FDBFEA0000-0x000001FDBFEB0000-memory.dmp

memory/3164-7-0x000001FDC0080000-0x000001FDC034A000-memory.dmp