Analysis
- max time kernel
149s - max time network
149s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
11/05/2026, 17:37
General
- Target Chrome Fixed (1).exe
- Size 3.2MB
- Sample260511-v7b6csbs4r
- SHA256 9a874ff30b136bf77e1d0cab6763c00b2606ea465b228e2d4703e3bc939e01d0
Malware Config
Extracted
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quasar
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1.4.1
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Office04
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www.vipbookssearch.radio.fm:80
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www.vipbookssearch.radio.fm:443
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vipbookssearch.radio.fm:443
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vipbookssearch.radio.fm:80
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vipbookssearch.radio.fm:8080
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www.vipbookssearch.radio.fm:8080
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1f0127ec-09ae-4222-a8e3-c8f0e57ea2fb
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encryption_key
71514463CA895B84E7E6B4A4FC68A8243476E095
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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
3000
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startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Family: Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 2 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of SetWindowsHookEx 1 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\Chrome Fixed (1).exe"C:\Users\Admin\AppData\Local\Temp\Chrome Fixed (1).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 FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- 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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-
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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
Client.exe
memory/132-19-0x000000001BDE0000-0x000000001BDF0000-memory.dmp
memory/132-42-0x000000001B9E0000-0x000000001BD58000-memory.dmp
memory/132-30-0x000000001B9E0000-0x000000001BD58000-memory.dmp
memory/132-20-0x000000001B9E0000-0x000000001BD58000-memory.dmp
memory/132-10-0x000000001BDE0000-0x000000001BDF0000-memory.dmp
memory/132-13-0x000000001C740000-0x000000001C7F2000-memory.dmp
memory/132-12-0x000000001C630000-0x000000001C680000-memory.dmp
memory/132-17-0x000000001B9E0000-0x000000001BD58000-memory.dmp
memory/132-18-0x000000001BDA0000-0x000000001BDB2000-memory.dmp
memory/2012-16-0x00000000024C0000-0x00000000024D2000-memory.dmp
memory/2012-15-0x000000001AEE0000-0x000000001B258000-memory.dmp
memory/3984-0-0x0000000000880000-0x0000000000BB4000-memory.dmp
memory/3984-8-0x000000001B7B0000-0x000000001BB28000-memory.dmp
memory/3984-9-0x0000000002D60000-0x0000000002D72000-memory.dmp
memory/3984-1-0x0000000002C90000-0x0000000002CA0000-memory.dmp