Malware Analysis Report

2025-01-18 04:16

Sample ID 240108-n4k6jahcbq
Target Client.exe
SHA256 3ca4e6deae0fb30f79adab295116a91011ca88e3d75187f334a39a91e22254cf
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

3ca4e6deae0fb30f79adab295116a91011ca88e3d75187f334a39a91e22254cf

Threat Level: Known bad

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

Malicious Activity Summary

quasar office04 spyware trojan

Quasar family

Quasar RAT

Quasar payload

Unsigned PE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-08 11:57

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: behavioral2

Detonation Overview

Submitted

2024-01-08 11:57

Reported

2024-01-08 11:59

Platform

win10v2004-20231222-en

Max time kernel

148s

Max time network

148s

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

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

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

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

Network

Country Destination Domain Proto
N/A 192.168.1.110:4782 tcp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 187.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 208.194.73.20.in-addr.arpa udp
US 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 59.128.231.4.in-addr.arpa udp
US 20.231.121.79:80 tcp
N/A 192.168.1.110:4782 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
N/A 192.168.1.110:4782 tcp
US 8.8.8.8:53 179.178.17.96.in-addr.arpa udp
N/A 192.168.1.110:4782 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
N/A 192.168.1.110:4782 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
N/A 192.168.1.110:4782 tcp
N/A 192.168.1.110:4782 tcp

Files

memory/3032-0-0x0000000000080000-0x00000000003A4000-memory.dmp

memory/3032-2-0x000000001AFA0000-0x000000001AFB0000-memory.dmp

memory/3032-1-0x00007FF9FED20000-0x00007FF9FF7E1000-memory.dmp

memory/3032-4-0x000000001D410000-0x000000001D4C2000-memory.dmp

memory/3032-3-0x000000001D300000-0x000000001D350000-memory.dmp

memory/3032-5-0x00007FF9FED20000-0x00007FF9FF7E1000-memory.dmp

memory/3032-6-0x000000001AFA0000-0x000000001AFB0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-08 11:57

Reported

2024-01-08 12:00

Platform

win7-20231215-en

Max time kernel

147s

Max time network

175s

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

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Processes

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

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

Network

Country Destination Domain Proto
N/A 192.168.1.110:4782 tcp
N/A 192.168.1.110:4782 tcp
N/A 192.168.1.110:4782 tcp
N/A 192.168.1.110:4782 tcp
N/A 192.168.1.110:4782 tcp
N/A 192.168.1.110:4782 tcp

Files

memory/2760-0-0x0000000000330000-0x0000000000654000-memory.dmp

memory/2760-1-0x000007FEF5450000-0x000007FEF5E3C000-memory.dmp

memory/2760-2-0x000000001B3A0000-0x000000001B420000-memory.dmp

memory/2760-3-0x000007FEF5450000-0x000007FEF5E3C000-memory.dmp

memory/2760-4-0x000000001B3A0000-0x000000001B420000-memory.dmp