Malware Analysis Report

2024-10-23 21:24

Sample ID 240802-3l6rvavfpj
Target solara.rar
SHA256 72e98b7008bc9306db84caf8577e00fa8edca0e2fdd473b234b490b16f87ae82
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

72e98b7008bc9306db84caf8577e00fa8edca0e2fdd473b234b490b16f87ae82

Threat Level: Known bad

The file solara.rar was found to be: Known bad.

Malicious Activity Summary

office04 quasar spyware trojan

Quasar payload

Quasar RAT

Quasar family

Executes dropped EXE

Unsigned PE

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-02 23:37

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

2024-08-02 23:37

Reported

2024-08-02 23:37

Platform

win7-20240704-en

Max time kernel

6s

Max time network

7s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar payload

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

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
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\solara.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1512 wrote to memory of 2248 N/A C:\Users\Admin\AppData\Local\Temp\solara.exe C:\Windows\system32\schtasks.exe
PID 1512 wrote to memory of 2248 N/A C:\Users\Admin\AppData\Local\Temp\solara.exe C:\Windows\system32\schtasks.exe
PID 1512 wrote to memory of 2248 N/A C:\Users\Admin\AppData\Local\Temp\solara.exe C:\Windows\system32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\system32\schtasks.exe

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

Network

N/A

Files

memory/1512-0-0x000007FEF59B3000-0x000007FEF59B4000-memory.dmp

memory/1512-1-0x00000000012D0000-0x00000000015F4000-memory.dmp

memory/1512-2-0x000007FEF59B0000-0x000007FEF639C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-02 23:37

Reported

2024-08-02 23:37

Platform

win10v2004-20240802-en

Max time kernel

17s

Max time network

22s

Command Line

"C:\Users\Admin\AppData\Local\Temp\solara.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\NovaRecoil.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\solara.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\NovaRecoil.exe N/A

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\SYSTEM32\schtasks.exe

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

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

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

C:\Windows\SYSTEM32\schtasks.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
N/A 192.168.86.42:4782 tcp

Files

memory/396-0-0x00007FFB449C3000-0x00007FFB449C5000-memory.dmp

memory/396-1-0x0000000000080000-0x00000000003A4000-memory.dmp

memory/396-2-0x00007FFB449C0000-0x00007FFB45481000-memory.dmp

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

MD5 1bdf6c7fda1c36dab1558b37aeb0d631
SHA1 9f7dc44275ee93dd42a8bffba2fc905c5ea56c24
SHA256 b7871caa008e2b9b56b23b6d9623064e6f773b58e5508b41001d125e29d71956
SHA512 52ddf7ee9b33cbd0fbd0f753cabb32763f2789a42abe995420f6a5d79aa9f841bb3707d088c29c5a9908f7e5c008f69e6f1971d36b2e0baedbe7ab2ac0cce0ce

memory/1124-9-0x00007FFB449C0000-0x00007FFB45481000-memory.dmp

memory/396-10-0x00007FFB449C0000-0x00007FFB45481000-memory.dmp

memory/1124-11-0x00007FFB449C0000-0x00007FFB45481000-memory.dmp

memory/1124-12-0x000000001BD30000-0x000000001BD80000-memory.dmp

memory/1124-13-0x000000001BE40000-0x000000001BEF2000-memory.dmp