Malware Analysis Report

2025-01-18 04:07

Sample ID 241104-2dmhkayhkq
Target kreo q zi.7z
SHA256 282d6f5ddc83351dab51e6decc1293b078638f0cfd0baca4673afc8246fd32bd
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

282d6f5ddc83351dab51e6decc1293b078638f0cfd0baca4673afc8246fd32bd

Threat Level: Known bad

The file kreo q zi.7z was found to be: Known bad.

Malicious Activity Summary

quasar office04 spyware trojan

Quasar family

Quasar RAT

Quasar payload

Executes dropped EXE

Uses Task Scheduler COM API

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Scheduled Task/Job: Scheduled Task

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-04 22:28

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-04 22:28

Reported

2024-11-04 22:28

Platform

win10ltsc2021-20241023-en

Max time kernel

15s

Max time network

21s

Command Line

"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\kreo q zi.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\kreo q zi.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\SubDir\Client.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: 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\kreo q zi.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:\Program Files\7-Zip\7zFM.exe N/A
N/A N/A C:\Program Files\7-Zip\7zFM.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:\Program Files\7-Zip\7zFM.exe

"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\kreo q zi.7z"

C:\Users\Admin\Desktop\kreo q zi.exe

"C:\Users\Admin\Desktop\kreo q zi.exe"

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "Quasar Client Startup" /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 "Quasar Client Startup" /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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 74.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.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 hola435-24858.portmap.host udp
DE 193.161.193.99:24858 hola435-24858.portmap.host 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 99.193.161.193.in-addr.arpa udp
US 8.8.8.8:53 94.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp

Files

C:\Users\Admin\Desktop\kreo q zi.exe

MD5 28ac02fc40c8f1c2a8989ee3c09a1372
SHA1 b182758b62a1482142c0fce4be78c786e08b7025
SHA256 0fe81f9a51cf0068408de3c3605ce2033a00bd7ec90cc9516c38f6069e06433b
SHA512 2cbf2f6af46e5fae8e67144e1ac70bc748036c7adb7f7810d7d7d9f255ccf5d163cce07f11fb6526f9ab61c39f28bdf2356cc315b19a61cd2115612882eab767

memory/2800-4-0x00007FF892D03000-0x00007FF892D05000-memory.dmp

memory/2800-5-0x0000000000E10000-0x0000000001134000-memory.dmp

memory/2800-6-0x00007FF892D00000-0x00007FF8937C2000-memory.dmp

memory/2800-9-0x00007FF892D00000-0x00007FF8937C2000-memory.dmp

memory/3216-10-0x000000001B5E0000-0x000000001B630000-memory.dmp

memory/3216-11-0x000000001CDB0000-0x000000001CE62000-memory.dmp

memory/3216-14-0x000000001B8C0000-0x000000001B8D2000-memory.dmp

memory/3216-15-0x000000001CD30000-0x000000001CD6C000-memory.dmp