Analysis
- max time kernel
150s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
24/01/2024, 15:09
General
- Target Client.exe
- Size 3.1MB
- Sample240124-sjfsjadcc9
- SHA256 93f4ec6466dcaee98fcc1cfef832f2709f650204d46e506c3a7e8d1524b22ab1
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
192.168.1.26:4782
-
299afefd-a27f-434c-a610-4fc0123e1956
-
encryption_key
F67EA4CFAE36451627913052B16A82FAC47C8E15
-
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 2 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
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Downloads
Client.exe.log
Client.exe
memory/1200-10-0x00007FFBCA4F0000-0x00007FFBCAFB1000-memory.dmp
memory/1200-11-0x000000001B750000-0x000000001B760000-memory.dmp
memory/1200-12-0x000000001C0B0000-0x000000001C100000-memory.dmp
memory/1200-13-0x000000001C1C0000-0x000000001C272000-memory.dmp
memory/1200-14-0x00007FFBCA4F0000-0x00007FFBCAFB1000-memory.dmp
memory/3740-0-0x0000000000570000-0x0000000000894000-memory.dmp
memory/3740-1-0x00007FFBCA4F0000-0x00007FFBCAFB1000-memory.dmp
memory/3740-2-0x000000001B6A0000-0x000000001B6B0000-memory.dmp
memory/3740-9-0x00007FFBCA4F0000-0x00007FFBCAFB1000-memory.dmp