Malware Analysis Report

2025-01-18 04:25

Sample ID 231130-c7nv2sfb5z
Target Client-built.exe
SHA256 2021bf97c6d6a200867c82fe27f31a4e01961e7efb8bd0fe4d857467f5ca3542
Tags
quasar office04 spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

2021bf97c6d6a200867c82fe27f31a4e01961e7efb8bd0fe4d857467f5ca3542

Threat Level: Known bad

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

Malicious Activity Summary

quasar office04 spyware trojan

Quasar family

Quasar RAT

Quasar payload

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-11-30 02:43

Signatures

Quasar family

quasar

Quasar payload

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

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2023-11-30 02:43

Reported

2023-11-30 02:45

Platform

win10v2004-20231127-en

Max time kernel

150s

Max time network

154s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A 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\Client-built.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

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

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

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 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 1.202.248.87.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 rattata.ddns.net udp
US 98.246.130.132:4782 rattata.ddns.net tcp
US 8.8.8.8:53 39.142.81.104.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 98.246.130.132:4782 rattata.ddns.net tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 138.175.53.84.in-addr.arpa udp
US 98.246.130.132:4782 rattata.ddns.net tcp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 rattata.ddns.net udp
US 98.246.130.132:4782 rattata.ddns.net tcp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 98.246.130.132:4782 rattata.ddns.net tcp
US 98.246.130.132:4782 rattata.ddns.net tcp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 rattata.ddns.net udp
US 98.246.130.132:4782 rattata.ddns.net tcp

Files

memory/2452-0-0x0000000000300000-0x0000000000624000-memory.dmp

memory/2452-1-0x00007FF9CDAF0000-0x00007FF9CE5B1000-memory.dmp

memory/2452-2-0x00000000026D0000-0x00000000026E0000-memory.dmp

memory/2452-3-0x000000001BD20000-0x000000001BD70000-memory.dmp

memory/2452-4-0x000000001BE30000-0x000000001BEE2000-memory.dmp

memory/2452-5-0x00007FF9CDAF0000-0x00007FF9CE5B1000-memory.dmp

memory/2452-6-0x00000000026D0000-0x00000000026E0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2023-11-30 02:43

Reported

2023-11-30 02:45

Platform

win7-20231023-en

Max time kernel

128s

Max time network

141s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

Description Indicator Process Target
N/A N/A 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\Client-built.exe N/A

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 rattata.ddns.net udp
US 98.246.130.132:4782 rattata.ddns.net tcp
US 98.246.130.132:4782 rattata.ddns.net tcp
US 98.246.130.132:4782 rattata.ddns.net tcp
US 8.8.8.8:53 rattata.ddns.net udp
US 98.246.130.132:4782 rattata.ddns.net tcp
US 98.246.130.132:4782 rattata.ddns.net tcp
US 98.246.130.132:4782 rattata.ddns.net tcp

Files

memory/2340-0-0x0000000000B40000-0x0000000000E64000-memory.dmp

memory/2340-1-0x000007FEF5380000-0x000007FEF5D6C000-memory.dmp

memory/2340-2-0x000000001B430000-0x000000001B4B0000-memory.dmp

memory/2340-3-0x000007FEF5380000-0x000007FEF5D6C000-memory.dmp

memory/2340-4-0x000000001B430000-0x000000001B4B0000-memory.dmp