Malware Analysis Report

2024-10-19 08:36

Sample ID 240731-vejpqsteqp
Target Client-built.exe
SHA256 63a6116026ded4e6c7061bbebb6ca2c1b58fdad9c65925328d4250eb3d061eaf
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: 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

63a6116026ded4e6c7061bbebb6ca2c1b58fdad9c65925328d4250eb3d061eaf

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

2024-07-31 16:54

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

2024-07-31 16:54

Reported

2024-07-31 16:56

Platform

win7-20240704-en

Max time kernel

131s

Max time network

140s

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 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp

Files

memory/3032-0-0x000007FEF6193000-0x000007FEF6194000-memory.dmp

memory/3032-1-0x00000000009E0000-0x0000000000D04000-memory.dmp

memory/3032-2-0x000007FEF6190000-0x000007FEF6B7C000-memory.dmp

memory/3032-3-0x000007FEF6193000-0x000007FEF6194000-memory.dmp

memory/3032-4-0x000007FEF6190000-0x000007FEF6B7C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-31 16:54

Reported

2024-07-31 16:56

Platform

win10v2004-20240730-en

Max time kernel

149s

Max time network

151s

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

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 147.185.221.20:18563 tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 74.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 ipwho.is udp
DE 195.201.57.90:443 ipwho.is tcp
US 8.8.8.8:53 20.221.185.147.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 147.185.221.20:9835 tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp
US 147.185.221.20:18563 tcp
US 147.185.221.20:9835 tcp
US 8.8.8.8:53 11.179.89.13.in-addr.arpa udp

Files

memory/2164-0-0x00007FFE9E7B3000-0x00007FFE9E7B5000-memory.dmp

memory/2164-1-0x0000000000840000-0x0000000000B64000-memory.dmp

memory/2164-2-0x00007FFE9E7B0000-0x00007FFE9F271000-memory.dmp

memory/2164-3-0x000000001C260000-0x000000001C2B0000-memory.dmp

memory/2164-4-0x000000001C370000-0x000000001C422000-memory.dmp

memory/2164-5-0x000000001C230000-0x000000001C242000-memory.dmp

memory/2164-6-0x000000001C2F0000-0x000000001C32C000-memory.dmp

memory/2164-7-0x000000001CF70000-0x000000001D119000-memory.dmp

memory/2164-9-0x00007FFE9E7B3000-0x00007FFE9E7B5000-memory.dmp

memory/2164-8-0x000000001CF70000-0x000000001D119000-memory.dmp

memory/2164-10-0x00007FFE9E7B0000-0x00007FFE9F271000-memory.dmp