Analysis
- max time kernel
148s - max time network
152s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
02/08/2026, 02:27
General
- Target bbxbef.za.exe
- Size 3.1MB
- Sample260802-cxn33asdla
- SHA256 c47274450692680b559ea15ff960abafef21908808210c32dadae4ff561fdf64
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
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bbxbef.za.com:443
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www.bbxbef.za.com:443
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bbxbef.za.com:80
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www.bbxbef.za.com:80
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2d514d86-f279-47e4-abf7-236f35e0370f
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encryption_key
ED3227F773701D05083B11A65776F95F93EEEF5E
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install_name
Client.exe
-
key_salt
bfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
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log_directory
Logs
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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
- 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 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
-
C:\Users\Admin\AppData\Local\Temp\bbxbef.za.exe"C:\Users\Admin\AppData\Local\Temp\bbxbef.za.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
-
-
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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-
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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/1152-16-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-2-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-3-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-4-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-5-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-6-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-7-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-8-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-9-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-10-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-11-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-12-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-13-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-14-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1152-1-0x0000000000050000-0x0000000000374000-memory.dmp
memory/1152-0-0x00007FFFAF95F000-0x00007FFFAF960000-memory.dmp
memory/1872-18-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-19-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-17-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-20-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-21-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-22-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-23-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-24-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-25-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-26-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-27-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-28-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-29-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-30-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp
memory/1872-33-0x000000001D520000-0x000000001D5D2000-memory.dmp
memory/1872-32-0x000000001D410000-0x000000001D460000-memory.dmp
memory/1872-34-0x00007FFFAF7D0000-0x00007FFFB0174000-memory.dmp