Malware Analysis Report

2025-04-14 05:06

Sample ID 230126-hecj7scf67
Target Client-built.exe
SHA256 c42aab483df3e41b9c4e006cba50655b35606b565c80750637c5fe6aad3f90a6
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 Overview

score
10/10

SHA256

c42aab483df3e41b9c4e006cba50655b35606b565c80750637c5fe6aad3f90a6

Threat Level: Known bad

The file Client-built.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 FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-01-26 06:38

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 06:38

Reported

2023-01-26 06:39

Platform

win7-20221111-en

Max time kernel

56s

Max time network

63s

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
N/A 192.168.0.195:1604 tcp
N/A 192.168.0.195:1604 tcp
N/A 192.168.0.195:1604 tcp

Files

memory/1216-54-0x0000000000F70000-0x0000000000FF4000-memory.dmp

memory/1216-55-0x000007FEFBF31000-0x000007FEFBF33000-memory.dmp