Analysis
- max time kernel
149s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260911-en - resource tags
- submitted
14/11/2026, 07:14
General
- Target Client-built.exe
- Size 3.1MB
- Sample261114-h231nset8t
- SHA256 52a7e960ea241564c0c7dcc5f58843b3bde81f0005ac493f9dae7f7d88adae4e
Malware Config
Extracted
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quasar
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1.4.1
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Office04
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public.zinguard.net:4782
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zinguard.net:4782
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blog.wifi6certified.com:4782
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wifi6certified.com:4782
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hempnationonline.com:4782
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agarport.co:4782
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record.radio.fm:4782
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activate-audiovisual.co.uk:4782
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tech.tmd45.in:4782
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feroxsports.com:4782
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member.meslot1688.com:4782
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https://public.zinguard.net/vn/:443
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km8kbet.com:443
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km8kbet.com:8080
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km8kbet.com:80
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m.518timebet.com:80
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m.518timebet.com:443
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m.518timebet.com:8080
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518timebet.com:443
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518timebet.com:40
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4833781f-ab77-4c9e-af36-793930f77164
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encryption_key
61D61573755A2E8791F777F44FE72A8C404B3F90
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install_name
Client.exe
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key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
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log_directory
Logs
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reconnect_delay
50
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startup_key
Quasar Client Startup
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subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Executes a command shell one-liner 1 TTPs 4 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 4 IoCs
Adversaries may check for Internet connectivity on compromised systems.
- Runs ping.exe 1 TTPs 4 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 6 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\X3cdnTa7srCa.bat" "3⤵
- Executes a command shell one-liner
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C:\Windows\system32\chcp.comchcp 650014⤵
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C:\Windows\system32\PING.EXEping -n 10 localhost4⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"4⤵
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f5⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\xUVwEodMyWxu.bat" "5⤵
- Executes a command shell one-liner
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C:\Windows\system32\chcp.comchcp 650016⤵
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C:\Windows\system32\PING.EXEping -n 10 localhost6⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"6⤵
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f7⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\y1RkR4cWYKtN.bat" "7⤵
- Executes a command shell one-liner
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C:\Windows\system32\chcp.comchcp 650018⤵
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C:\Windows\system32\PING.EXEping -n 10 localhost8⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"8⤵
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f9⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\NbkxTVMat85f.bat" "9⤵
- Executes a command shell one-liner
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C:\Windows\system32\chcp.comchcp 6500110⤵
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C:\Windows\system32\PING.EXEping -n 10 localhost10⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"10⤵
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C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f11⤵
- Scheduled Task/Job: Scheduled Task
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C:\Users\Admin\AppData\Roaming\SubDir\Client.exeC:\Users\Admin\AppData\Roaming\SubDir\Client.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
NbkxTVMat85f.bat
X3cdnTa7srCa.bat
xUVwEodMyWxu.bat
y1RkR4cWYKtN.bat
Client.exe
memory/988-34-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-31-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-46-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-38-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-36-0x000000001AFE0000-0x000000001B030000-memory.dmp
memory/988-37-0x000000001C6E0000-0x000000001C792000-memory.dmp
memory/988-32-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-33-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-30-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-29-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-21-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-22-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-23-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-24-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-25-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-26-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-27-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/988-28-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-10-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-7-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-20-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-12-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-0-0x00007FF832A5F000-0x00007FF832A60000-memory.dmp
memory/4288-11-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-13-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-4-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-14-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-6-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-9-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-5-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-8-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-3-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-2-0x00007FF8328D0000-0x00007FF833274000-memory.dmp
memory/4288-1-0x0000000000010000-0x0000000000334000-memory.dmp