Analysis
- max time kernel
149s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20230703-en - resource tags
- submitted
03/08/2023, 09:46
General
- Target client.exe
- Size 3.1MB
- Sample230803-lrmgqacf69
- SHA256 dc20017aaf4eeba0943edb41bbc0296b6d08d996eb3a86562347d7c33e2a7f5c
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
localhost:4782
-
a170efd4-f33e-4571-b9ff-090b6e695b58
-
encryption_key
ABF434F48565DB677A9E794368208E8319DC8759
-
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 3 IoCs
- Executes dropped EXE 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of AdjustPrivilegeToken 2 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
Processes
-
C:\Users\Admin\AppData\Local\Temp\client.exe"C:\Users\Admin\AppData\Local\Temp\client.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
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
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe.log
Client.exe
Client.exe
memory/1804-142-0x00007FFC96840000-0x00007FFC97301000-memory.dmp
memory/1804-144-0x0000000003110000-0x0000000003120000-memory.dmp
memory/1804-145-0x000000001E0B0000-0x000000001E100000-memory.dmp
memory/1804-146-0x000000001E1C0000-0x000000001E272000-memory.dmp
memory/1804-147-0x00007FFC96840000-0x00007FFC97301000-memory.dmp
memory/1804-148-0x0000000003110000-0x0000000003120000-memory.dmp
memory/2224-135-0x000000001BB70000-0x000000001BB80000-memory.dmp
memory/2224-134-0x00007FFC96840000-0x00007FFC97301000-memory.dmp
memory/2224-133-0x0000000000C20000-0x0000000000F44000-memory.dmp
memory/2224-143-0x00007FFC96840000-0x00007FFC97301000-memory.dmp