Analysis
- max time kernel
156s - max time network
165s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
10/01/2024, 09:49
General
- Target 1839c6634e34e874a7b71b2601229ec69d3bbefbed652bff51596c7d212541c9.exe
- Size 3.1MB
- Sample240110-ltevnaeae6
- SHA256 1839c6634e34e874a7b71b2601229ec69d3bbefbed652bff51596c7d212541c9
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
192.168.0.106:8111
-
87f23ae3-17d3-431d-bda5-307b65d46d77
-
encryption_key
D912B92DAFB4D0C9D52F85801E609319CA9564F2
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 2 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\1839c6634e34e874a7b71b2601229ec69d3bbefbed652bff51596c7d212541c9.exe"C:\Users\Admin\AppData\Local\Temp\1839c6634e34e874a7b71b2601229ec69d3bbefbed652bff51596c7d212541c9.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
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⤵
- Creates scheduled task(s)
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
memory/4328-0-0x0000000000C00000-0x0000000000F24000-memory.dmp
memory/4328-1-0x00007FFBA7B50000-0x00007FFBA8611000-memory.dmp
memory/4328-2-0x000000001BB50000-0x000000001BB60000-memory.dmp
memory/4328-4-0x000000001C930000-0x000000001C9E2000-memory.dmp
memory/4328-3-0x000000001C820000-0x000000001C870000-memory.dmp
memory/4328-5-0x00007FFBA7B50000-0x00007FFBA8611000-memory.dmp
memory/4328-6-0x000000001BB50000-0x000000001BB60000-memory.dmp