Analysis
- max time kernel
1794s - max time network
1800s - platform
windows11-21h2_x64 - resource
win11-20240611-en - resource tags
- submitted
28/06/2024, 01:53
General
- Target Client-built.exe
- Size 3.1MB
- Sample240628-ca1tcaxeql
- SHA256 a847f4126ae5f0d337e772adfae8e9a2c95b6056e6153f36c5f36f93105f84ec
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
10.0.0.21:4782
-
345650a9-273e-4187-b07b-92bd3be96cfb
-
encryption_key
01B099D258EFB3A3BEB2CAB36B11707A9FD8D1F3
-
install_name
playertraka.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
- 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\playertraka.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\SubDir\playertraka.exe"C:\Users\Admin\AppData\Roaming\SubDir\playertraka.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\playertraka.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
playertraka.exe
memory/1196-9-0x00007FF880480000-0x00007FF880F42000-memory.dmp
memory/1196-10-0x00007FF880480000-0x00007FF880F42000-memory.dmp
memory/1196-11-0x0000000002570000-0x00000000025C0000-memory.dmp
memory/1196-12-0x000000001B8A0000-0x000000001B952000-memory.dmp
memory/1196-13-0x00007FF880480000-0x00007FF880F42000-memory.dmp
memory/4880-0-0x00007FF880483000-0x00007FF880485000-memory.dmp
memory/4880-1-0x0000000000880000-0x0000000000BA4000-memory.dmp
memory/4880-2-0x00007FF880480000-0x00007FF880F42000-memory.dmp
memory/4880-8-0x00007FF880480000-0x00007FF880F42000-memory.dmp