Malware Analysis Report

2024-10-19 08:36

Sample ID 240731-apetba1dnb
Target 36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522
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: 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

36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522

Threat Level: Known bad

The file 36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522 was found to be: Known bad.

Malicious Activity Summary

quasar office04 spyware trojan

Quasar payload

Quasar family

Quasar RAT

Executes dropped EXE

Unsigned PE

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-07-31 00:23

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 00:22

Reported

2024-07-31 00:25

Platform

win10v2004-20240730-en

Max time kernel

95s

Max time network

136s

Command Line

"C:\Users\Admin\AppData\Local\Temp\36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522.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\36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522.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\36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522.exe

"C:\Users\Admin\AppData\Local\Temp\36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522.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 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
CA 51.222.21.20:4782 tcp
US 8.8.8.8:53 ipwho.is udp
DE 195.201.57.90:443 ipwho.is tcp
US 8.8.8.8:53 20.21.222.51.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp

Files

memory/4724-0-0x00007FFA58393000-0x00007FFA58395000-memory.dmp

memory/4724-1-0x00000000005D0000-0x00000000008F4000-memory.dmp

memory/4724-2-0x00007FFA58390000-0x00007FFA58E51000-memory.dmp

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

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

memory/4724-9-0x00007FFA58390000-0x00007FFA58E51000-memory.dmp

memory/2672-10-0x00007FFA58390000-0x00007FFA58E51000-memory.dmp

memory/2672-11-0x000000001D500000-0x000000001D550000-memory.dmp

memory/2672-12-0x000000001D610000-0x000000001D6C2000-memory.dmp

memory/2672-13-0x000000001BDE0000-0x000000001BDF2000-memory.dmp

memory/2672-14-0x000000001D590000-0x000000001D5CC000-memory.dmp

memory/2672-15-0x00007FFA58390000-0x00007FFA58E51000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-07-31 00:22

Reported

2024-07-31 00:25

Platform

win11-20240730-en

Max time kernel

91s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522.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\36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522.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\36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522.exe

"C:\Users\Admin\AppData\Local\Temp\36e6a3dd4bfc86c4e707f43cd9515707442d6c424b7661cb41766cfdca322522.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
US 8.8.8.8:53 ipwho.is udp
DE 195.201.57.90:443 ipwho.is tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp

Files

memory/2820-0-0x00007FFCEB9B3000-0x00007FFCEB9B5000-memory.dmp

memory/2820-1-0x0000000000CD0000-0x0000000000FF4000-memory.dmp

memory/2820-2-0x00007FFCEB9B0000-0x00007FFCEC472000-memory.dmp

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

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

memory/3916-9-0x00007FFCEB9B0000-0x00007FFCEC472000-memory.dmp

memory/2820-10-0x00007FFCEB9B0000-0x00007FFCEC472000-memory.dmp

memory/3916-11-0x000000001CC00000-0x000000001CC50000-memory.dmp

memory/3916-12-0x000000001CD10000-0x000000001CDC2000-memory.dmp

memory/3916-13-0x000000001CC70000-0x000000001CC82000-memory.dmp

memory/3916-14-0x000000001CCD0000-0x000000001CD0C000-memory.dmp

memory/3916-15-0x00007FFCEB9B0000-0x00007FFCEC472000-memory.dmp