Analysis
- max time kernel
147s - max time network
154s - platform
windows11-21h2_x64 - resource
win11-20241007-en - resource tags
- submitted
10/12/2024, 00:03
General
- Target Client-built.exe
- Size 3.1MB
- Sample241210-ab7bea1ncn
- SHA256 dcda7ad82a917a329939789f9a8514e7afa205d208c3af9356988cb1fe1f596d
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
68.8.112.15:443
-
68c72d56-7c01-4752-8b16-99645c1898fc
-
encryption_key
6A865538EA2172CEA230F0158FFB3F9E7FC36141
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
5
-
startup_key
Quasar Client Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar family
- 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-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.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
memory/572-9-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp
memory/572-10-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp
memory/572-12-0x000000001C660000-0x000000001C712000-memory.dmp
memory/572-11-0x000000001C550000-0x000000001C5A0000-memory.dmp
memory/572-13-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp
memory/3996-0-0x00007FFE8EB83000-0x00007FFE8EB85000-memory.dmp
memory/3996-1-0x00000000004A0000-0x00000000007C4000-memory.dmp
memory/3996-2-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp
memory/3996-8-0x00007FFE8EB80000-0x00007FFE8F642000-memory.dmp