Malware Analysis Report

2024-09-11 09:19

Sample ID 240614-xvzf8swfqr
Target Tulpical_V3 lock.exe
SHA256 02e896adebf162d071bf730e2c5eed52e207efe3d7eeafc094acc5b2cb763b52
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

02e896adebf162d071bf730e2c5eed52e207efe3d7eeafc094acc5b2cb763b52

Threat Level: Known bad

The file Tulpical_V3 lock.exe was found to be: Known bad.

Malicious Activity Summary

discordrat persistence rat rootkit stealer

Discord RAT

Executes dropped EXE

Loads dropped DLL

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

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
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-14 19:11

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 19:11

Reported

2024-06-14 19:28

Platform

win7-20240611-en

Max time kernel

838s

Max time network

842s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.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\lock image.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe N/A
N/A N/A C:\Windows\system32\WerFault.exe N/A
N/A N/A C:\Windows\system32\WerFault.exe N/A
N/A N/A C:\Windows\system32\WerFault.exe N/A
N/A N/A C:\Windows\system32\WerFault.exe N/A
N/A N/A C:\Windows\system32\WerFault.exe N/A

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2764 wrote to memory of 2956 N/A C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe C:\Users\Admin\AppData\Local\Temp\lock image.exe
PID 2764 wrote to memory of 2956 N/A C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe C:\Users\Admin\AppData\Local\Temp\lock image.exe
PID 2764 wrote to memory of 2956 N/A C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe C:\Users\Admin\AppData\Local\Temp\lock image.exe
PID 2956 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\lock image.exe C:\Windows\system32\WerFault.exe
PID 2956 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\lock image.exe C:\Windows\system32\WerFault.exe
PID 2956 wrote to memory of 2756 N/A C:\Users\Admin\AppData\Local\Temp\lock image.exe C:\Windows\system32\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe

"C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe"

C:\Users\Admin\AppData\Local\Temp\lock image.exe

"C:\Users\Admin\AppData\Local\Temp\lock image.exe"

C:\Windows\system32\WerFault.exe

C:\Windows\system32\WerFault.exe -u -p 2956 -s 596

Network

N/A

Files

\Users\Admin\AppData\Local\Temp\lock image.exe

MD5 eb574fb1d907ffd85ce1854f5585d67a
SHA1 6b72bc26e0f282010c1c1e5589e130d250d28bb5
SHA256 1a3072f72b2747d1bbe6f8aec7945d7753c061cd02ab1a1632963d13ba9e61bd
SHA512 0df1476ff05cc2c34e9c84ac4ba7760c233755f8a9f031ac33241aab71cfc1fbba20344b1403620c7f7695360d30ab124cf3557bff4730bd10f8f8b71a580c6f

memory/2764-10-0x0000000002FE0000-0x0000000002FE1000-memory.dmp

memory/2956-11-0x000007FEF5D53000-0x000007FEF5D54000-memory.dmp

memory/2956-12-0x000000013F6E0000-0x000000013F6F8000-memory.dmp

memory/2956-17-0x000007FEF5D50000-0x000007FEF673C000-memory.dmp

memory/2956-19-0x000007FEF5D50000-0x000007FEF673C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 19:11

Reported

2024-06-14 19:22

Platform

win10v2004-20240508-en

Max time kernel

670s

Max time network

679s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe"

Signatures

Discord RAT

stealer rootkit rat persistence discordrat

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\lock image.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\lock image.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3924 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe C:\Users\Admin\AppData\Local\Temp\lock image.exe
PID 3924 wrote to memory of 208 N/A C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe C:\Users\Admin\AppData\Local\Temp\lock image.exe

Processes

C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe

"C:\Users\Admin\AppData\Local\Temp\Tulpical_V3 lock.exe"

C:\Users\Admin\AppData\Local\Temp\lock image.exe

"C:\Users\Admin\AppData\Local\Temp\lock image.exe"

Network

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

Files

C:\Users\Admin\AppData\Local\Temp\lock image.exe

MD5 eb574fb1d907ffd85ce1854f5585d67a
SHA1 6b72bc26e0f282010c1c1e5589e130d250d28bb5
SHA256 1a3072f72b2747d1bbe6f8aec7945d7753c061cd02ab1a1632963d13ba9e61bd
SHA512 0df1476ff05cc2c34e9c84ac4ba7760c233755f8a9f031ac33241aab71cfc1fbba20344b1403620c7f7695360d30ab124cf3557bff4730bd10f8f8b71a580c6f

memory/208-14-0x00007FF8F5683000-0x00007FF8F5685000-memory.dmp

memory/208-15-0x0000015F1D770000-0x0000015F1D788000-memory.dmp

memory/208-16-0x0000015F37D50000-0x0000015F37F12000-memory.dmp

memory/208-17-0x00007FF8F5680000-0x00007FF8F6141000-memory.dmp

memory/208-18-0x00007FF8F5680000-0x00007FF8F6141000-memory.dmp