Malware Analysis Report

2024-10-23 21:28

Sample ID 240411-j5qeesae9x
Target Client.exe
SHA256 5a0c1f8c117e97ea489329daaf64834554dcabd0263480675c6277b17f70f4f4
Tags
office04 quasar 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

5a0c1f8c117e97ea489329daaf64834554dcabd0263480675c6277b17f70f4f4

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar spyware trojan

Quasar family

Quasar RAT

Quasar payload

Executes dropped EXE

Enumerates physical storage devices

Unsigned PE

Uses Task Scheduler COM API

Enumerates system info in registry

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of SendNotifyMessage

Suspicious use of FindShellTrayWindow

Creates scheduled task(s)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-11 08:15

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: behavioral1

Detonation Overview

Submitted

2024-04-11 08:15

Reported

2024-04-11 08:20

Platform

win7-20240221-en

Max time kernel

51s

Max time network

153s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer C:\Program Files\Google\Chrome\Application\chrome.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Client.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
Token: SeShutdownPrivilege N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
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N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
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N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
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N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
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N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
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N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
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N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
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N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A
N/A N/A C:\Program Files\Google\Chrome\Application\chrome.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2280 wrote to memory of 992 N/A C:\Users\Admin\AppData\Local\Temp\Client.exe C:\Windows\system32\schtasks.exe
PID 2280 wrote to memory of 992 N/A C:\Users\Admin\AppData\Local\Temp\Client.exe C:\Windows\system32\schtasks.exe
PID 2280 wrote to memory of 992 N/A C:\Users\Admin\AppData\Local\Temp\Client.exe C:\Windows\system32\schtasks.exe
PID 2532 wrote to memory of 1972 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 1972 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 1972 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2400 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 320 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 320 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 320 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe
PID 2532 wrote to memory of 2596 N/A C:\Program Files\Google\Chrome\Application\chrome.exe C:\Program Files\Google\Chrome\Application\chrome.exe

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\system32\schtasks.exe

"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f

C:\Windows\explorer.exe

"C:\Windows\explorer.exe"

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe"

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef2429758,0x7fef2429768,0x7fef2429778

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1136 --field-trial-handle=1228,i,9023685747623355050,18351889635634770188,131072 /prefetch:2

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1500 --field-trial-handle=1228,i,9023685747623355050,18351889635634770188,131072 /prefetch:8

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1576 --field-trial-handle=1228,i,9023685747623355050,18351889635634770188,131072 /prefetch:8

C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe

"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2300 --field-trial-handle=1228,i,9023685747623355050,18351889635634770188,131072 /prefetch:1

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2312 --field-trial-handle=1228,i,9023685747623355050,18351889635634770188,131072 /prefetch:1

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=1652 --field-trial-handle=1228,i,9023685747623355050,18351889635634770188,131072 /prefetch:2

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=3216 --field-trial-handle=1228,i,9023685747623355050,18351889635634770188,131072 /prefetch:1

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3516 --field-trial-handle=1228,i,9023685747623355050,18351889635634770188,131072 /prefetch:8

C:\Program Files\Google\Chrome\Application\chrome.exe

"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3532 --field-trial-handle=1228,i,9023685747623355050,18351889635634770188,131072 /prefetch:8

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.google.com udp
GB 142.250.178.4:443 www.google.com tcp
US 8.8.8.8:53 apis.google.com udp
GB 216.58.201.110:443 apis.google.com tcp

Files

memory/2280-0-0x0000000001080000-0x00000000013A4000-memory.dmp

memory/2280-1-0x000007FEF5CA0000-0x000007FEF668C000-memory.dmp

memory/2280-2-0x000000001B240000-0x000000001B2C0000-memory.dmp

\??\pipe\crashpad_2532_KNFAZZRZGJLHSZFI

MD5 d41d8cd98f00b204e9800998ecf8427e
SHA1 da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256 e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512 cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\000007.dbtmp

MD5 18e723571b00fb1694a3bad6c78e4054
SHA1 afcc0ef32d46fe59e0483f9a3c891d3034d12f32
SHA256 8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa
SHA512 43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1

MD5 f50f89a0a91564d0b8a211f8921aa7de
SHA1 112403a17dd69d5b9018b8cede023cb3b54eab7d
SHA256 b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec
SHA512 bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58

memory/2280-53-0x000007FEF5CA0000-0x000007FEF668C000-memory.dmp

memory/2280-62-0x000000001B240000-0x000000001B2C0000-memory.dmp

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

MD5 fadd6be85fa8e5efd7277bf6af56d8de
SHA1 5f26b3fb7c3e70d985da2f19efc59f49a5b244ab
SHA256 eff78ee802fba29c7337276a3795f42b8c516e28b8354b9fd9f841db1f912e25
SHA512 b6a691e983a0abaef71b60fb69019682fea9bb7e47bdfe2d6a55a39aed2e34050b651735ff34b6c239d1240378c8fa7786faf7128ae17220088bd3d853ca39c5

C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

MD5 03eab9c5938784647152249bebc4f756
SHA1 77ac81860bfff4a864932ea7aadfd651d7f3818d
SHA256 fd42006b3241d166330d9625d7c1fec6725d9d6259098335832becff2967f4db
SHA512 60fc15bdd3211b7cfbbad21a0a83b036dd4a62aa0d64840fddb4ea19a9001612300d1fa29286851d402f470f9a63ee31acb2bbbafc55dad2f44a683afb6565e1

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-11 08:15

Reported

2024-04-11 08:20

Platform

win10v2004-20240226-en

Max time kernel

146s

Max time network

154s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
Description Indicator Process Target
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A
N/A N/A C:\Windows\SYSTEM32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Client.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of SendNotifyMessage

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 71.159.190.20.in-addr.arpa udp
N/A 192.168.178.113:4782 tcp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
N/A 192.168.178.113:4782 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 17.143.109.104.in-addr.arpa udp
N/A 192.168.178.113:4782 tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
N/A 192.168.178.113:4782 tcp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
N/A 192.168.178.113:4782 tcp
N/A 192.168.178.113:4782 tcp
US 8.8.8.8:53 23.173.189.20.in-addr.arpa udp

Files

memory/5052-0-0x0000000000E40000-0x0000000001164000-memory.dmp

memory/5052-1-0x00007FF80A380000-0x00007FF80AE41000-memory.dmp

memory/5052-2-0x000000001BE70000-0x000000001BE80000-memory.dmp

C:\Users\Admin\AppData\Roaming\SubDir\Client.exe

MD5 06c48b0057d41710e891201feb25782a
SHA1 1910dedf7da045aa142c2606ee4aa55729241178
SHA256 5a0c1f8c117e97ea489329daaf64834554dcabd0263480675c6277b17f70f4f4
SHA512 818a46ce9fabaa244d74cffe435ea2e2740bf1e20da49402b3bb1147b994f979cf89e06ee0d3302a8c4fa33d4cfc2dc7f9eeb612125478cef4da9e4899ea9bed

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Client.exe.log

MD5 baf55b95da4a601229647f25dad12878
SHA1 abc16954ebfd213733c4493fc1910164d825cac8
SHA256 ee954c5d8156fd8890e582c716e5758ed9b33721258f10e758bdc31ccbcb1924
SHA512 24f502fedb1a305d0d7b08857ffc1db9b2359ff34e06d5748ecc84e35c985f29a20d9f0a533bea32d234ab37097ec0481620c63b14ac89b280e75e14d19fd545

memory/5052-10-0x00007FF80A380000-0x00007FF80AE41000-memory.dmp

memory/3032-11-0x00007FF80A380000-0x00007FF80AE41000-memory.dmp

memory/3032-12-0x000000001B1C0000-0x000000001B1D0000-memory.dmp

memory/3032-13-0x000000001BE20000-0x000000001BE70000-memory.dmp

memory/3032-14-0x000000001BF30000-0x000000001BFE2000-memory.dmp

memory/3032-15-0x00007FF80A380000-0x00007FF80AE41000-memory.dmp

memory/3032-16-0x000000001B1C0000-0x000000001B1D0000-memory.dmp