Malware Analysis Report

2024-10-19 08:42

Sample ID 240418-rqq2eagf71
Target aa.exe
SHA256 d12e1428a758363be465222740a635e1cce61d4dda7373cfdce035f3051aeccd
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

d12e1428a758363be465222740a635e1cce61d4dda7373cfdce035f3051aeccd

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar spyware trojan

Quasar family

Quasar payload

Quasar RAT

Executes dropped EXE

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious use of SendNotifyMessage

Suspicious use of FindShellTrayWindow

Suspicious use of AdjustPrivilegeToken

Uses Task Scheduler COM API

Creates scheduled task(s)

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-18 14:24

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 14:24

Reported

2024-04-18 14:26

Platform

win10v2004-20240412-en

Max time kernel

146s

Max time network

148s

Command Line

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

"C:\Users\Admin\AppData\Local\Temp\aa.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 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 9.228.82.20.in-addr.arpa udp
NL 23.62.61.171:443 www.bing.com tcp
DE 193.161.193.99:1194 tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 67.32.209.4.in-addr.arpa udp
US 8.8.8.8:53 171.61.62.23.in-addr.arpa udp
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
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
US 8.8.8.8:53 81.139.73.23.in-addr.arpa udp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp
DE 193.161.193.99:1194 tcp

Files

memory/1420-0-0x0000000000EC0000-0x00000000011E4000-memory.dmp

memory/1420-1-0x00007FFFF9BF0000-0x00007FFFFA6B1000-memory.dmp

memory/1420-2-0x000000001BEE0000-0x000000001BEF0000-memory.dmp

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

MD5 3e8cdd629813c4e75a1b2e6d6c46d39f
SHA1 98a6b4bcfe37ffc5a8a2884d8b0b1f9b0e5f1444
SHA256 d12e1428a758363be465222740a635e1cce61d4dda7373cfdce035f3051aeccd
SHA512 42491a72c8a60c566b73a15afe67e667242991124fff3420f66d7e8444dc995893fa79a1f32f91d29611410be4c0c651e701e815b01f3d5fbc72ac3e0c048466

memory/1420-9-0x00007FFFF9BF0000-0x00007FFFFA6B1000-memory.dmp

memory/4400-10-0x00007FFFF9BF0000-0x00007FFFFA6B1000-memory.dmp

memory/4400-11-0x000000001BD30000-0x000000001BD40000-memory.dmp

memory/4400-12-0x000000001C9F0000-0x000000001CA40000-memory.dmp

memory/4400-13-0x000000001CB00000-0x000000001CBB2000-memory.dmp

memory/4400-14-0x00007FFFF9BF0000-0x00007FFFFA6B1000-memory.dmp

memory/4400-15-0x000000001BD30000-0x000000001BD40000-memory.dmp