Malware Analysis Report

2025-04-14 04:54

Sample ID 241213-fxq47syrew
Target RedTiger V6.1.exe
SHA256 d7e3253a7183ac7ccd70a64f43fce756bdd7bb804a19f45bb51b4cc3606fb2e6
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 Overview

score
10/10

SHA256

d7e3253a7183ac7ccd70a64f43fce756bdd7bb804a19f45bb51b4cc3606fb2e6

Threat Level: Known bad

The file RedTiger V6.1.exe was found to be: Known bad.

Malicious Activity Summary

office04 quasar spyware trojan

Quasar family

Quasar RAT

Quasar payload

Executes dropped EXE

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious use of SendNotifyMessage

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-13 05:15

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 05:15

Reported

2024-12-13 05:15

Platform

win11-20241007-en

Max time kernel

10s

Max time network

10s

Command Line

"C:\Users\Admin\AppData\Local\Temp\RedTiger V6.1.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\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: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\RedTiger V6.1.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.exe N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A 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

Suspicious use of SetWindowsHookEx

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

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\RedTiger V6.1.exe

"C:\Users\Admin\AppData\Local\Temp\RedTiger V6.1.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "RedTiger Tool v6.1" /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 "RedTiger Tool v6.1" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
N/A 192.168.1.69:4782 tcp

Files

memory/4900-0-0x00007FFFCDB53000-0x00007FFFCDB55000-memory.dmp

memory/4900-1-0x00000000003C0000-0x00000000006E4000-memory.dmp

memory/4900-2-0x00007FFFCDB50000-0x00007FFFCE612000-memory.dmp

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

MD5 80a01617755c58445468779ef1bb1bdb
SHA1 cbf1d327b6205cf1f0e313d7da93e82c0c16c937
SHA256 d7e3253a7183ac7ccd70a64f43fce756bdd7bb804a19f45bb51b4cc3606fb2e6
SHA512 7237cd5a8fe9d1fb045d879c8b6efa57e2fa2b62977b9dea29bded315d4004d3c72049764bf76bf0b3ef7906b4c7271f001d5734a7daa2237ee80b1e1f2d7a4f

memory/4900-8-0x00007FFFCDB50000-0x00007FFFCE612000-memory.dmp

memory/1320-9-0x00007FFFCDB50000-0x00007FFFCE612000-memory.dmp

memory/1320-10-0x00007FFFCDB50000-0x00007FFFCE612000-memory.dmp

memory/1320-11-0x000000001C910000-0x000000001C960000-memory.dmp

memory/1320-12-0x000000001CA20000-0x000000001CAD2000-memory.dmp

memory/1320-13-0x00007FFFCDB50000-0x00007FFFCE612000-memory.dmp