Malware Analysis Report

2024-10-19 08:41

Sample ID 240418-rt2bjsgg81
Target asdasd.exe
SHA256 39f626850f3dbd66ff5b75f99cd531cf74e4418338ddd45d0ae20fb7ceda2b6f
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

39f626850f3dbd66ff5b75f99cd531cf74e4418338ddd45d0ae20fb7ceda2b6f

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar spyware trojan

Quasar family

Quasar RAT

Quasar payload

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Creates scheduled task(s)

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious use of SendNotifyMessage

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-18 14:29

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

2024-04-18 14:29

Reported

2024-04-18 14:33

Platform

win10v2004-20240412-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\asdasd.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\Client.exe N/A

Enumerates physical storage devices

Creates scheduled task(s)

persistence
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\asdasd.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\asdasd.exe

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

C:\Windows\SYSTEM32\schtasks.exe

"schtasks" /create /tn "python" /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 "python" /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 69.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
US 8.8.8.8:53 156.33.209.4.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
DE 193.161.193.99:1194 tcp
US 8.8.8.8:53 21.114.53.23.in-addr.arpa udp
US 8.8.8.8:53 99.193.161.193.in-addr.arpa udp
N/A 192.168.254.152:1194 tcp
DE 193.161.193.99:1194 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
N/A 192.168.254.152:1194 tcp
US 8.8.8.8:53 65.139.73.23.in-addr.arpa udp
DE 193.161.193.99:1194 tcp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
N/A 192.168.254.152:1194 tcp
US 8.8.8.8:53 216.197.17.2.in-addr.arpa udp
DE 193.161.193.99:1194 tcp
N/A 192.168.254.152:1194 tcp
DE 193.161.193.99:1194 tcp
N/A 192.168.254.152:1194 tcp
DE 193.161.193.99:1194 tcp
N/A 192.168.254.152:1194 tcp

Files

memory/4452-0-0x0000000000A50000-0x0000000000D74000-memory.dmp

memory/4452-1-0x00007FFA27F50000-0x00007FFA28A11000-memory.dmp

memory/4452-2-0x0000000002F40000-0x0000000002F50000-memory.dmp

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

MD5 30fdc0a0d22cca3c0b971c7928ca0e82
SHA1 517211383e5022bec91b521955832a69417f4042
SHA256 39f626850f3dbd66ff5b75f99cd531cf74e4418338ddd45d0ae20fb7ceda2b6f
SHA512 dcd9ae5e6ce11c93826b2d7b4d9acd201ac53cd41f20d815b308d2f3fd938b3774ea6d64f9f13ce159238ddbead7e8e126d514fe85af0da11d416de94415b404

memory/4452-9-0x00007FFA27F50000-0x00007FFA28A11000-memory.dmp

memory/4392-10-0x00007FFA27F50000-0x00007FFA28A11000-memory.dmp

memory/4392-11-0x000000001BC00000-0x000000001BC10000-memory.dmp

memory/4392-12-0x000000001C830000-0x000000001C880000-memory.dmp

memory/4392-13-0x000000001C940000-0x000000001C9F2000-memory.dmp

memory/4392-14-0x00007FFA27F50000-0x00007FFA28A11000-memory.dmp