Malware Analysis Report

2025-04-14 04:54

Sample ID 241213-hqf2rstjfp
Target IMVUDineroIlimitado.exe
SHA256 5a3b284cfc49a72f3a28b91aad715c0181c13c10672433323569e92f15afa0c1
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

5a3b284cfc49a72f3a28b91aad715c0181c13c10672433323569e92f15afa0c1

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar spyware trojan

Quasar payload

Quasar RAT

Quasar family

Executes dropped EXE

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Scheduled Task/Job: Scheduled Task

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-13 06:56

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

2024-12-13 06:56

Reported

2024-12-13 06:58

Platform

win7-20241023-en

Max time kernel

148s

Max time network

150s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar family

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\WindowsUpdate.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\IMVUDineroIlimitado.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe N/A

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\system32\schtasks.exe

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

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

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

C:\Windows\system32\schtasks.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 azxq0ap.localto.net udp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp

Files

memory/2396-0-0x000007FEF5EB3000-0x000007FEF5EB4000-memory.dmp

memory/2396-1-0x00000000001E0000-0x0000000000532000-memory.dmp

memory/2396-2-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp

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

MD5 507321e95801a8d7833c15613d60fa6f
SHA1 b5805546dbdff837b9a0f6c6e619ef660bb23b97
SHA256 5a3b284cfc49a72f3a28b91aad715c0181c13c10672433323569e92f15afa0c1
SHA512 bd3edf014ed1aed2aac6331307c07997dba8a5fe631cb1209eea7a3f72deb7901cc8175b73832142c9552a510f0e9d9d2cbf65008c961c4e26e992daab4c1dba

memory/2396-8-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp

memory/2232-10-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp

memory/2232-9-0x0000000001110000-0x0000000001462000-memory.dmp

memory/2232-11-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp

memory/2232-12-0x000007FEF5EB0000-0x000007FEF689C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-13 06:56

Reported

2024-12-13 06:58

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

150s

Command Line

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

Signatures

Quasar RAT

trojan spyware quasar

Quasar family

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\WindowsUpdate.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\IMVUDineroIlimitado.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\WindowsUpdate.exe N/A

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

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

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

C:\Windows\SYSTEM32\schtasks.exe

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

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

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

C:\Windows\SYSTEM32\schtasks.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 180.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 azxq0ap.localto.net udp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 134.130.81.91.in-addr.arpa udp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 8.8.8.8:53 41.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 23.158.232.33:3425 azxq0ap.localto.net tcp
US 8.8.8.8:53 udp

Files

memory/2812-0-0x00007FF867A23000-0x00007FF867A25000-memory.dmp

memory/2812-1-0x0000000000340000-0x0000000000692000-memory.dmp

memory/2812-2-0x00007FF867A20000-0x00007FF8684E1000-memory.dmp

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

MD5 507321e95801a8d7833c15613d60fa6f
SHA1 b5805546dbdff837b9a0f6c6e619ef660bb23b97
SHA256 5a3b284cfc49a72f3a28b91aad715c0181c13c10672433323569e92f15afa0c1
SHA512 bd3edf014ed1aed2aac6331307c07997dba8a5fe631cb1209eea7a3f72deb7901cc8175b73832142c9552a510f0e9d9d2cbf65008c961c4e26e992daab4c1dba

memory/2812-9-0x00007FF867A20000-0x00007FF8684E1000-memory.dmp

memory/1716-10-0x00007FF867A20000-0x00007FF8684E1000-memory.dmp

memory/1716-11-0x00007FF867A20000-0x00007FF8684E1000-memory.dmp

memory/1716-12-0x00000000035A0000-0x00000000035F0000-memory.dmp

memory/1716-13-0x000000001C7A0000-0x000000001C852000-memory.dmp

memory/1716-14-0x00007FF867A20000-0x00007FF8684E1000-memory.dmp