Analysis
- user interaction
yes - max time kernel
67s - max time network
69s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
08/08/2026, 06:44
General
- Target spoofer/spoofer.exe
- Size 3.1MB
- Sample260808-hhqagavzhy
- SHA256 ddf89cfc0d8a9e567e19d245208d5c6db890d5e50c7db0366f68beac20305285
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
192.168.178.183:4782
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bc85232d-fe66-413a-afc7-ca3b698d5f1f
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encryption_key
AE70F005A7173CC2689173DCA5DC3075631C66C5
-
install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
-
log_directory
Logs
-
reconnect_delay
3000
-
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
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 28 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 8 IoCs
- Suspicious use of FindShellTrayWindow 45 IoCs
- Suspicious use of SendNotifyMessage 45 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\spoofer\spoofer.exe"C:\Users\Admin\AppData\Local\Temp\spoofer\spoofer.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 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
-
C:\Windows\system32\taskmgr.exe"C:\Windows\system32\taskmgr.exe" /41⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
Client.exe
memory/2416-8-0x000000001BE60000-0x000000001BE70000-memory.dmp
memory/2416-10-0x0000000003300000-0x0000000003350000-memory.dmp
memory/2416-11-0x000000001C560000-0x000000001C612000-memory.dmp
memory/4072-0-0x0000000000DB0000-0x00000000010D4000-memory.dmp
memory/4072-1-0x000000001BE00000-0x000000001BE10000-memory.dmp
memory/4412-15-0x000001E094D30000-0x000001E094D31000-memory.dmp
memory/4412-14-0x000001E094D30000-0x000001E094D31000-memory.dmp
memory/4412-13-0x000001E094D30000-0x000001E094D31000-memory.dmp
memory/4412-25-0x000001E094D30000-0x000001E094D31000-memory.dmp
memory/4412-24-0x000001E094D30000-0x000001E094D31000-memory.dmp
memory/4412-23-0x000001E094D30000-0x000001E094D31000-memory.dmp
memory/4412-22-0x000001E094D30000-0x000001E094D31000-memory.dmp
memory/4412-21-0x000001E094D30000-0x000001E094D31000-memory.dmp
memory/4412-20-0x000001E094D30000-0x000001E094D31000-memory.dmp
memory/4412-19-0x000001E094D30000-0x000001E094D31000-memory.dmp