Malware Analysis Report

2024-09-11 09:33

Sample ID 240603-s81h8sbd2t
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: 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

Legitimate hosting services abused for malware hosting/C2

Unsigned PE

Modifies registry class

Suspicious use of AdjustPrivilegeToken

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
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 15:48

Signatures

Discordrat family

discordrat

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 15:48

Reported

2024-06-03 15:51

Platform

win11-20240508-en

Max time kernel

146s

Max time network

150s

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

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3107365284-1576850094-161165143-1000_Classes\Local Settings\MuiCache C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.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

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe N/A

Processes

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

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

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe

"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca

Network

Country Destination Domain Proto
US 8.8.8.8:53 gateway.discord.gg udp
US 162.159.136.234:443 gateway.discord.gg tcp
US 8.8.8.8:53 234.136.159.162.in-addr.arpa udp
US 162.159.138.232:443 discord.com tcp
DE 159.89.102.253:443 geolocation-db.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

Files

memory/3912-1-0x00007FF836C73000-0x00007FF836C75000-memory.dmp

memory/3912-0-0x000001AA91A70000-0x000001AA91A88000-memory.dmp

memory/3912-2-0x000001AAAC190000-0x000001AAAC352000-memory.dmp

memory/3912-3-0x00007FF836C70000-0x00007FF837732000-memory.dmp

memory/3912-4-0x000001AAAD410000-0x000001AAAD938000-memory.dmp

memory/3912-5-0x00007FF836C70000-0x00007FF837732000-memory.dmp

C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\~earchHoverUnifiedTileModelCache.tmp

MD5 cf4d76f1a9247b679411a23597ab0736
SHA1 ca7ea2bb3f8f7be7c59eb122cad5b045cf4e9c66
SHA256 552fdfebf5efd5e7e3373b9030d26042a53a28197c2955a8dfa3eed3479c6bbe
SHA512 a21e03a0fb43eb2f50e2ee98e9eee1ffcda02f5e418352d567904c4ff33ca536c938f0cc46aa258bc6df37d34f05799bfc8c7d99a34afba789a2286ec1c47a91