Malware Analysis Report

2025-01-18 04:07

Sample ID 241104-aa1ggaxlax
Target Fps unlocker.7z
SHA256 418bca7ff00a6c66b907d677b1c476962d0ae01fc1f69f235aa1394d7809750c
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 Overview

score
10/10

SHA256

418bca7ff00a6c66b907d677b1c476962d0ae01fc1f69f235aa1394d7809750c

Threat Level: Known bad

The file Fps unlocker.7z was found to be: Known bad.

Malicious Activity Summary

quasar office04 spyware trojan

Quasar payload

Quasar RAT

Quasar family

Executes dropped EXE

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Suspicious use of SendNotifyMessage

Scheduled Task/Job: Scheduled Task

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-04 00:01

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-04 00:01

Reported

2024-11-04 00:02

Platform

win10ltsc2021-20241023-en

Max time kernel

62s

Max time network

76s

Command Line

"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Fps unlocker.7z"

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\Desktop\Fps unlocker.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Enumerates physical storage devices

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: SeRestorePrivilege N/A C:\Program Files\7-Zip\7zFM.exe N/A
Token: 35 N/A C:\Program Files\7-Zip\7zFM.exe N/A
Token: SeSecurityPrivilege N/A C:\Program Files\7-Zip\7zFM.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Desktop\Fps unlocker.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of SendNotifyMessage

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

Uses Task Scheduler COM API

persistence

Processes

C:\Program Files\7-Zip\7zFM.exe

"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Fps unlocker.7z"

C:\Users\Admin\Desktop\Fps unlocker.exe

"C:\Users\Admin\Desktop\Fps unlocker.exe"

C:\Windows\SYSTEM32\schtasks.exe

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

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

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

C:\Windows\SYSTEM32\schtasks.exe

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 72.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 checkappexec.microsoft.com udp
GB 51.11.108.188:443 checkappexec.microsoft.com tcp
US 8.8.8.8:53 188.108.11.51.in-addr.arpa udp
US 8.8.8.8:53 203.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 Inversin-43597.portmap.host udp
DE 193.161.193.99:43597 Inversin-43597.portmap.host tcp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 ipwho.is udp
DE 195.201.57.90:443 ipwho.is tcp
US 8.8.8.8:53 99.193.161.193.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 fd.api.iris.microsoft.com udp
IE 20.223.36.55:443 fd.api.iris.microsoft.com tcp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp

Files

C:\Users\Admin\Desktop\Fps unlocker.exe

MD5 bf656c2e5e1e942c41fa918132faa7ab
SHA1 1c2ddd815378e54db9e21dd2e61d89067c94da4f
SHA256 b70c5aea64d75fc98a82b3c88cfecc6c2856f2a4987f4c1212c3fcf866ec9c9f
SHA512 54bef34ab722d69f1d3b7f5316f1fbc10fc629bb134f70eecb6a368330b7b73305ef5fa0b9e83c104e6e679ccd1d6e7f5a20caf4f39e6b03d4940b4ed9540b7d

memory/2224-4-0x00007FFFC2A73000-0x00007FFFC2A75000-memory.dmp

memory/2224-5-0x00000000005F0000-0x0000000000914000-memory.dmp

memory/2224-6-0x00007FFFC2A70000-0x00007FFFC3532000-memory.dmp

memory/2224-9-0x00007FFFC2A70000-0x00007FFFC3532000-memory.dmp

memory/2904-10-0x000000001C7E0000-0x000000001C830000-memory.dmp

memory/2904-11-0x000000001C8F0000-0x000000001C9A2000-memory.dmp

memory/2904-14-0x000000001C830000-0x000000001C842000-memory.dmp

memory/2904-15-0x000000001C890000-0x000000001C8CC000-memory.dmp