Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
09/12/2024, 02:45
General
- Target Client-built.exe
- Size 3.1MB
- Sample241209-c856qatlam
- SHA256 f58e7f0c990786066a2493513c11087fdd4680fb2053b9f52ec60d1d2dde6921
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
10.0.0.132:4782
-
0d8449ad-bc65-4692-bc2e-440d227260cb
-
encryption_key
2070844D17065869428344B78D6D5F7002ED90BD
-
install_name
shot.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 family
- 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\Client-built.exe"C:\Users\Admin\AppData\Local\Temp\Client-built.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\shot.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\SubDir\shot.exe"C:\Users\Admin\AppData\Roaming\SubDir\shot.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 "Quasar Client Startup" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\shot.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
shot.exe
memory/1388-0-0x00007FFB5E6D3000-0x00007FFB5E6D5000-memory.dmp
memory/1388-1-0x00000000004F0000-0x0000000000814000-memory.dmp
memory/1388-2-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp
memory/1388-9-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp
memory/2952-10-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp
memory/2952-11-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp
memory/2952-12-0x000000001CF70000-0x000000001CFC0000-memory.dmp
memory/2952-13-0x000000001D080000-0x000000001D132000-memory.dmp
memory/2952-14-0x00007FFB5E6D0000-0x00007FFB5F191000-memory.dmp