Malware Analysis Report

2025-08-05 14:11

Sample ID 230816-g344pagb78
Target myproject.exe
SHA256 9d3b91e313cc1183cbc94c36a1aa0b50e5a2e2178293240e935d5626c4994db2
Tags
quasar clppso persistence spyware trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

9d3b91e313cc1183cbc94c36a1aa0b50e5a2e2178293240e935d5626c4994db2

Threat Level: Known bad

The file myproject.exe was found to be: Known bad.

Malicious Activity Summary

quasar clppso persistence spyware trojan

Quasar RAT

Quasar payload

Adds Run key to start application

Suspicious use of SetThreadContext

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-08-16 06:20

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-16 06:20

Reported

2023-08-16 06:30

Platform

win7-20230712-en

Max time kernel

0s

Max time network

3s

Command Line

"C:\Users\Admin\AppData\Local\Temp\myproject.exe"

Signatures

N/A

Processes

C:\Users\Admin\AppData\Local\Temp\myproject.exe

"C:\Users\Admin\AppData\Local\Temp\myproject.exe"

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-16 06:20

Reported

2023-08-16 06:23

Platform

win10v2004-20230703-en

Max time kernel

142s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\myproject.exe"

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1722984668-1829624581-3022101259-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winrar = "C:\\Users\\Admin\\AppData\\Roaming\\winrar.exe" C:\Users\Admin\AppData\Local\Temp\myproject.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4164 set thread context of 824 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A
N/A N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4164 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 4500 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 4500 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 4500 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
PID 4164 wrote to memory of 824 N/A C:\Users\Admin\AppData\Local\Temp\myproject.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Processes

C:\Users\Admin\AppData\Local\Temp\myproject.exe

"C:\Users\Admin\AppData\Local\Temp\myproject.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 108.211.229.192.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
US 5.249.163.32:4782 tcp
US 8.8.8.8:53 ipwho.is udp
CA 108.181.98.179:443 ipwho.is tcp
US 8.8.8.8:53 32.163.249.5.in-addr.arpa udp
US 8.8.8.8:53 179.98.181.108.in-addr.arpa udp
US 8.8.8.8:53 64.13.109.52.in-addr.arpa udp
US 8.8.8.8:53 104.193.132.51.in-addr.arpa udp

Files

memory/4164-133-0x0000000074B60000-0x0000000075310000-memory.dmp

memory/4164-134-0x0000000000D90000-0x0000000000F7E000-memory.dmp

memory/4164-135-0x0000000006000000-0x00000000065A4000-memory.dmp

memory/4164-136-0x0000000005990000-0x0000000005A22000-memory.dmp

memory/4164-137-0x0000000005900000-0x0000000005910000-memory.dmp

memory/4164-138-0x0000000005970000-0x000000000597A000-memory.dmp

memory/4164-139-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-140-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-142-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-144-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-146-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-148-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-150-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-152-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-154-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-156-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-158-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-160-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-162-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-164-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-166-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-168-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-170-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-172-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-174-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-176-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-178-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-180-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-182-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-184-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-186-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-188-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-190-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-194-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-192-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-196-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-198-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-200-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-202-0x0000000007020000-0x00000000071F4000-memory.dmp

memory/4164-694-0x0000000074B60000-0x0000000075310000-memory.dmp

memory/4164-773-0x0000000005900000-0x0000000005910000-memory.dmp

memory/4164-1217-0x0000000005C10000-0x0000000005C11000-memory.dmp

memory/824-1221-0x0000000000400000-0x0000000000724000-memory.dmp

memory/824-1222-0x0000000074B60000-0x0000000075310000-memory.dmp

memory/824-1223-0x0000000005920000-0x0000000005930000-memory.dmp

memory/4164-1224-0x0000000074B60000-0x0000000075310000-memory.dmp

memory/824-1225-0x0000000007020000-0x0000000007638000-memory.dmp

memory/824-1226-0x0000000006BB0000-0x0000000006C00000-memory.dmp

memory/824-1227-0x0000000006E10000-0x0000000006EC2000-memory.dmp

memory/824-1230-0x0000000007DE0000-0x0000000007DF2000-memory.dmp

memory/824-1231-0x0000000007E40000-0x0000000007E7C000-memory.dmp

memory/824-1232-0x0000000007EF0000-0x0000000007F56000-memory.dmp

memory/824-1233-0x0000000074B60000-0x0000000075310000-memory.dmp

memory/824-1234-0x0000000005920000-0x0000000005930000-memory.dmp