Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
22/09/2024, 17:29
General
- Target Backround.exe
- Size 3.1MB
- Sample240922-v2qfss1fln
- SHA256 017198139a7d539e38ad4c82a43af0adb75b887a529f5c54951745d29ae74bc8
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
22.ip.gl.ply.gg:56299
-
e51d5be6-e9f1-4a56-82c6-845df21ad73c
-
encryption_key
26C51B7302E32DA0CBF387237A66638261EBDF66
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Startup
-
subdirectory
SubDir
Signatures
- Quasar RAT
Quasar is an open source Remote Access Tool.
- Quasar payload 2 IoCs
- Executes dropped EXE 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 6 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\Backround.exe"C:\Users\Admin\AppData\Local\Temp\Backround.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
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 SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
Client.exe
memory/1568-0-0x00007FFA8C643000-0x00007FFA8C645000-memory.dmp
memory/1568-1-0x0000000000ED0000-0x00000000011F4000-memory.dmp
memory/1568-2-0x00007FFA8C640000-0x00007FFA8D101000-memory.dmp
memory/1568-9-0x00007FFA8C640000-0x00007FFA8D101000-memory.dmp
memory/4780-10-0x00007FFA8C640000-0x00007FFA8D101000-memory.dmp
memory/4780-11-0x00007FFA8C640000-0x00007FFA8D101000-memory.dmp
memory/4780-13-0x000000001B910000-0x000000001B9C2000-memory.dmp
memory/4780-12-0x000000001B090000-0x000000001B0E0000-memory.dmp
memory/4780-14-0x00007FFA8C640000-0x00007FFA8D101000-memory.dmp