Malware Analysis Report

2025-04-14 05:06

Sample ID 230126-hhxpjsec3v
Target Client-built2.exe
SHA256 240f6135d5dad8a8f0003be5e08123d721f5d0ee94dadc46d6575956b54f72fc
Tags
office04 quasar spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

240f6135d5dad8a8f0003be5e08123d721f5d0ee94dadc46d6575956b54f72fc

Threat Level: Known bad

The file Client-built2.exe was found to be: Known bad.

Malicious Activity Summary

office04 quasar spyware trojan

Quasar family

Quasar payload

Quasar RAT

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-01-26 06:44

Signatures

Quasar family

quasar

Quasar payload

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-01-26 06:44

Reported

2023-01-26 06:46

Platform

win7-20220812-en

Max time kernel

102s

Max time network

114s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Client-built2.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-built2.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Client-built2.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Client-built2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Client-built2.exe

"C:\Users\Admin\AppData\Local\Temp\Client-built2.exe"

Network

Country Destination Domain Proto
N/A 192.168.0.195:1604 tcp
N/A 192.168.0.1:1604 tcp
N/A 46.212.113.82:1604 tcp
N/A 192.168.0.195:1604 tcp
N/A 192.168.0.1:1604 tcp
N/A 46.212.113.82:1604 tcp
N/A 192.168.0.195:1604 tcp

Files

memory/752-54-0x0000000000060000-0x00000000000E4000-memory.dmp

memory/752-55-0x000007FEFC161000-0x000007FEFC163000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-01-26 06:44

Reported

2023-01-26 06:46

Platform

win10v2004-20220812-en

Max time kernel

112s

Max time network

115s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Client-built2.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-built2.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Client-built2.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Client-built2.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\Client-built2.exe

"C:\Users\Admin\AppData\Local\Temp\Client-built2.exe"

Network

Country Destination Domain Proto
N/A 192.168.0.195:1604 tcp
N/A 192.168.0.1:1604 tcp
N/A 52.182.143.210:443 tcp
N/A 46.212.113.82:1604 tcp
N/A 67.24.171.254:80 tcp
N/A 67.24.171.254:80 tcp
N/A 192.168.0.195:1604 tcp
N/A 192.168.0.1:1604 tcp
N/A 46.212.113.82:1604 tcp
N/A 8.8.8.8:53 udp
N/A 185.172.148.96:443 tcp

Files

memory/2248-132-0x0000000000330000-0x00000000003B4000-memory.dmp

memory/2248-133-0x00007FF905BB0000-0x00007FF906671000-memory.dmp

memory/2248-134-0x000000001CA90000-0x000000001CAE0000-memory.dmp

memory/2248-135-0x000000001CBA0000-0x000000001CC52000-memory.dmp

memory/2248-136-0x00007FF905BB0000-0x00007FF906671000-memory.dmp