Malware Analysis Report

2025-01-18 04:09

Sample ID 241103-wr8eastjgm
Target FpsBoosterUpdated.exe
SHA256 91d3d30addc138a7e5792098b38e0d0600e4e81044372306d857ae05002a1e48
Tags
office04 quasar discovery 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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

91d3d30addc138a7e5792098b38e0d0600e4e81044372306d857ae05002a1e48

Threat Level: Known bad

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

Malicious Activity Summary

office04 quasar discovery spyware trojan

Quasar family

Quasar RAT

Quasar payload

Executes dropped EXE

Loads dropped DLL

Looks up external IP address via web service

Drops file in Program Files directory

System Location Discovery: System Language Discovery

Unsigned PE

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-03 18:10

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

2024-11-03 18:10

Reported

2024-11-03 18:13

Platform

win7-20240708-en

Max time kernel

147s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.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
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\SubDir\FpsBooster.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Drops file in Program Files directory

Description Indicator Process Target
File opened for modification C:\Program Files (x86)\SubDir C:\Program Files (x86)\SubDir\FpsBooster.exe N/A
File created C:\Program Files (x86)\SubDir\FpsBooster.exe C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe N/A
File opened for modification C:\Program Files (x86)\SubDir\FpsBooster.exe C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\SubDir\FpsBooster.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\SubDir\FpsBooster.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2196 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe C:\Windows\SysWOW64\schtasks.exe
PID 2196 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe C:\Windows\SysWOW64\schtasks.exe
PID 2196 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe C:\Windows\SysWOW64\schtasks.exe
PID 2196 wrote to memory of 2752 N/A C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe C:\Windows\SysWOW64\schtasks.exe
PID 2196 wrote to memory of 2832 N/A C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe C:\Program Files (x86)\SubDir\FpsBooster.exe
PID 2196 wrote to memory of 2832 N/A C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe C:\Program Files (x86)\SubDir\FpsBooster.exe
PID 2196 wrote to memory of 2832 N/A C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe C:\Program Files (x86)\SubDir\FpsBooster.exe
PID 2196 wrote to memory of 2832 N/A C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe C:\Program Files (x86)\SubDir\FpsBooster.exe
PID 2832 wrote to memory of 2608 N/A C:\Program Files (x86)\SubDir\FpsBooster.exe C:\Windows\SysWOW64\schtasks.exe
PID 2832 wrote to memory of 2608 N/A C:\Program Files (x86)\SubDir\FpsBooster.exe C:\Windows\SysWOW64\schtasks.exe
PID 2832 wrote to memory of 2608 N/A C:\Program Files (x86)\SubDir\FpsBooster.exe C:\Windows\SysWOW64\schtasks.exe
PID 2832 wrote to memory of 2608 N/A C:\Program Files (x86)\SubDir\FpsBooster.exe C:\Windows\SysWOW64\schtasks.exe

Processes

C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe

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

C:\Windows\SysWOW64\schtasks.exe

"schtasks" /create /tn "FpsBooster" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe" /rl HIGHEST /f

C:\Program Files (x86)\SubDir\FpsBooster.exe

"C:\Program Files (x86)\SubDir\FpsBooster.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks" /create /tn "FpsBooster" /sc ONLOGON /tr "C:\Program Files (x86)\SubDir\FpsBooster.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 208.95.112.1:80 ip-api.com tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp

Files

memory/2196-0-0x0000000073E6E000-0x0000000073E6F000-memory.dmp

memory/2196-1-0x0000000000910000-0x000000000096E000-memory.dmp

memory/2196-2-0x0000000073E60000-0x000000007454E000-memory.dmp

memory/2196-3-0x0000000073E6E000-0x0000000073E6F000-memory.dmp

\Program Files (x86)\SubDir\FpsBooster.exe

MD5 290b4ade8d6facb2bddad3eb853c1bcf
SHA1 f86966d34bc407090f418192ebbd1bc88346b98e
SHA256 91d3d30addc138a7e5792098b38e0d0600e4e81044372306d857ae05002a1e48
SHA512 5d0ebf9b4d9fb1c88dac4be649e2e0fc88972d89fe5c090e02b0fcf736d26b57371bc6702195c37d2711c661afb685cb4bbf87d2224c2ae333051d6acfa8286b

memory/2196-11-0x0000000073E60000-0x000000007454E000-memory.dmp

memory/2832-13-0x0000000073E60000-0x000000007454E000-memory.dmp

memory/2196-14-0x0000000073E60000-0x000000007454E000-memory.dmp

memory/2832-12-0x0000000073E60000-0x000000007454E000-memory.dmp

memory/2832-10-0x0000000000AE0000-0x0000000000B3E000-memory.dmp

memory/2832-15-0x0000000073E60000-0x000000007454E000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-03 18:10

Reported

2024-11-03 18:13

Platform

win10v2004-20241007-en

Max time kernel

146s

Max time network

146s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.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:\Program Files (x86)\SubDir\FpsBooster.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files (x86)\SubDir\FpsBooster.exe C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe N/A
File opened for modification C:\Program Files (x86)\SubDir\FpsBooster.exe C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe N/A
File opened for modification C:\Program Files (x86)\SubDir C:\Program Files (x86)\SubDir\FpsBooster.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\SubDir\FpsBooster.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\schtasks.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A
N/A N/A C:\Windows\SysWOW64\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe N/A
Token: SeDebugPrivilege N/A C:\Program Files (x86)\SubDir\FpsBooster.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe

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

C:\Windows\SysWOW64\schtasks.exe

"schtasks" /create /tn "FpsBooster" /sc ONLOGON /tr "C:\Users\Admin\AppData\Local\Temp\FpsBoosterUpdated.exe" /rl HIGHEST /f

C:\Program Files (x86)\SubDir\FpsBooster.exe

"C:\Program Files (x86)\SubDir\FpsBooster.exe"

C:\Windows\SysWOW64\schtasks.exe

"schtasks" /create /tn "FpsBooster" /sc ONLOGON /tr "C:\Program Files (x86)\SubDir\FpsBooster.exe" /rl HIGHEST /f

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 150.171.27.10:443 g.bing.com tcp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 75.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 101.11.19.2.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp
N/A 127.0.0.1:4782 tcp

Files

memory/4464-0-0x00000000746AE000-0x00000000746AF000-memory.dmp

memory/4464-1-0x00000000006F0000-0x000000000074E000-memory.dmp

memory/4464-2-0x0000000005660000-0x0000000005C04000-memory.dmp

memory/4464-3-0x00000000050B0000-0x0000000005142000-memory.dmp

memory/4464-4-0x00000000746A0000-0x0000000074E50000-memory.dmp

memory/4464-5-0x0000000005030000-0x0000000005096000-memory.dmp

memory/4464-6-0x0000000005630000-0x0000000005642000-memory.dmp

memory/4464-7-0x0000000006230000-0x000000000626C000-memory.dmp

C:\Program Files (x86)\SubDir\FpsBooster.exe

MD5 290b4ade8d6facb2bddad3eb853c1bcf
SHA1 f86966d34bc407090f418192ebbd1bc88346b98e
SHA256 91d3d30addc138a7e5792098b38e0d0600e4e81044372306d857ae05002a1e48
SHA512 5d0ebf9b4d9fb1c88dac4be649e2e0fc88972d89fe5c090e02b0fcf736d26b57371bc6702195c37d2711c661afb685cb4bbf87d2224c2ae333051d6acfa8286b

memory/3484-13-0x00000000746A0000-0x0000000074E50000-memory.dmp

memory/4464-14-0x00000000746A0000-0x0000000074E50000-memory.dmp

memory/3484-15-0x00000000746A0000-0x0000000074E50000-memory.dmp

memory/3484-16-0x0000000006B40000-0x0000000006B4A000-memory.dmp

memory/3484-17-0x00000000746A0000-0x0000000074E50000-memory.dmp