Malware Analysis Report

2024-10-23 21:24

Sample ID 240804-pdq5jaygne
Target 9c682f5b5000cd003e76530706955a72.exe
SHA256 36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522
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

36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522

Threat Level: Known bad

The file 9c682f5b5000cd003e76530706955a72.exe was found to be: Known bad.

Malicious Activity Summary

quasar office04 spyware trojan

Quasar RAT

Quasar family

Quasar payload

Executes dropped EXE

Unsigned PE

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-04 12:13

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

2024-08-04 12:13

Reported

2024-08-04 12:15

Platform

win10v2004-20240802-en

Max time kernel

149s

Max time network

140s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9c682f5b5000cd003e76530706955a72.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\svchost.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
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\9c682f5b5000cd003e76530706955a72.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\svchost.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\9c682f5b5000cd003e76530706955a72.exe

"C:\Users\Admin\AppData\Local\Temp\9c682f5b5000cd003e76530706955a72.exe"

C:\Windows\SYSTEM32\schtasks.exe

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

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

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

C:\Windows\SYSTEM32\schtasks.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 204.79.197.237:443 g.bing.com tcp
CA 51.222.21.20:4782 tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
CA 51.222.21.20:4782 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 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
CA 51.222.21.20:4782 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
CA 51.222.21.20:4782 tcp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
CA 51.222.21.20:4782 tcp
CA 51.222.21.20:4782 tcp
CA 51.222.21.20:4782 tcp

Files

memory/408-0-0x00007FF810C13000-0x00007FF810C15000-memory.dmp

memory/408-1-0x0000000000AB0000-0x0000000000DD4000-memory.dmp

memory/408-2-0x00007FF810C10000-0x00007FF8116D1000-memory.dmp

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

MD5 9c682f5b5000cd003e76530706955a72
SHA1 1a69da76e05d114a317342dae3e9c7b10f107d43
SHA256 36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522
SHA512 33bd859542e1ae74d8c81427af44022cb91861dc02ee4202505f1e010487d06cb27e1aa83be6af17be4e2d8973289595b2ebe9bdf99a187956662df30b6dc88f

memory/408-9-0x00007FF810C10000-0x00007FF8116D1000-memory.dmp

memory/2720-10-0x00007FF810C10000-0x00007FF8116D1000-memory.dmp

memory/2720-11-0x000000001D450000-0x000000001D4A0000-memory.dmp

memory/2720-12-0x000000001D560000-0x000000001D612000-memory.dmp

memory/2720-13-0x00007FF810C10000-0x00007FF8116D1000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-04 12:13

Reported

2024-08-04 12:15

Platform

win7-20240729-en

Max time kernel

150s

Max time network

135s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9c682f5b5000cd003e76530706955a72.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
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\svchost.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
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\9c682f5b5000cd003e76530706955a72.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\svchost.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\9c682f5b5000cd003e76530706955a72.exe

"C:\Users\Admin\AppData\Local\Temp\9c682f5b5000cd003e76530706955a72.exe"

C:\Windows\system32\schtasks.exe

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

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

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

C:\Windows\system32\schtasks.exe

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

Network

Country Destination Domain Proto
CA 51.222.21.20:4782 tcp
CA 51.222.21.20:4782 tcp
CA 51.222.21.20:4782 tcp
CA 51.222.21.20:4782 tcp
CA 51.222.21.20:4782 tcp
CA 51.222.21.20:4782 tcp
CA 51.222.21.20:4782 tcp

Files

memory/2548-0-0x000007FEF5643000-0x000007FEF5644000-memory.dmp

memory/2548-1-0x0000000000B90000-0x0000000000EB4000-memory.dmp

memory/2548-2-0x000007FEF5640000-0x000007FEF602C000-memory.dmp

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

MD5 9c682f5b5000cd003e76530706955a72
SHA1 1a69da76e05d114a317342dae3e9c7b10f107d43
SHA256 36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522
SHA512 33bd859542e1ae74d8c81427af44022cb91861dc02ee4202505f1e010487d06cb27e1aa83be6af17be4e2d8973289595b2ebe9bdf99a187956662df30b6dc88f

memory/2548-9-0x000007FEF5640000-0x000007FEF602C000-memory.dmp

memory/1388-8-0x00000000003F0000-0x0000000000714000-memory.dmp

memory/1388-10-0x000007FEF5640000-0x000007FEF602C000-memory.dmp

memory/1388-11-0x000007FEF5640000-0x000007FEF602C000-memory.dmp

memory/1388-12-0x000007FEF5640000-0x000007FEF602C000-memory.dmp