Analysis
- max time kernel
119s - max time network
120s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
31/08/2024, 07:51
General
- Target fdddba9fd0561d3141f8f12095237280N.exe
- Size 3.1MB
- Sample240831-jqaqesshpp
- SHA256 de6df8b82acbe5222ae3a1dfc2cb7ade1c1fe83ef5e654637b10e68fdc50e7b6
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
127.0.0.1:4782
-
49514be3-4e5e-4a34-81e3-ffdd96dd2300
-
encryption_key
B4801D92763AA0AA38AF1B9F9E0C22095E45BF5F
-
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\fdddba9fd0561d3141f8f12095237280N.exe"C:\Users\Admin\AppData\Local\Temp\fdddba9fd0561d3141f8f12095237280N.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/1944-0-0x00007FF8F62D3000-0x00007FF8F62D5000-memory.dmp
memory/1944-1-0x0000000000FE0000-0x0000000001304000-memory.dmp
memory/1944-2-0x00007FF8F62D0000-0x00007FF8F6D91000-memory.dmp
memory/1944-11-0x00007FF8F62D0000-0x00007FF8F6D91000-memory.dmp
memory/2876-9-0x00007FF8F62D0000-0x00007FF8F6D91000-memory.dmp
memory/2876-10-0x00007FF8F62D0000-0x00007FF8F6D91000-memory.dmp
memory/2876-12-0x000000001C340000-0x000000001C390000-memory.dmp
memory/2876-13-0x000000001C450000-0x000000001C502000-memory.dmp
memory/2876-14-0x00007FF8F62D0000-0x00007FF8F6D91000-memory.dmp