Analysis
- max time kernel
149s - max time network
141s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
02/10/2024, 01:15
General
- Target 4a04da4d657c3c6bc45ea42cfef67039cd51173159ce7b707467f69146e086f9.exe
- Size 3.1MB
- Sample241002-bl8snazcpl
- SHA256 4a04da4d657c3c6bc45ea42cfef67039cd51173159ce7b707467f69146e086f9
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
39.102.36.209:4782
-
6d2ccfb9-4bf8-4a23-933c-5674d8e6fac2
-
encryption_key
F48794CF898BB4C5B6223D4F472D7C5E4AD2EF9D
-
install_name
Clienty.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\4a04da4d657c3c6bc45ea42cfef67039cd51173159ce7b707467f69146e086f9.exe"C:\Users\Admin\AppData\Local\Temp\4a04da4d657c3c6bc45ea42cfef67039cd51173159ce7b707467f69146e086f9.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\Clienty.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\SubDir\Clienty.exe"C:\Users\Admin\AppData\Roaming\SubDir\Clienty.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\Clienty.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Clienty.exe
memory/3728-0-0x00007FFAD5833000-0x00007FFAD5835000-memory.dmp
memory/3728-1-0x00000000001D0000-0x00000000004F4000-memory.dmp
memory/3728-2-0x00007FFAD5830000-0x00007FFAD62F1000-memory.dmp
memory/3728-10-0x00007FFAD5830000-0x00007FFAD62F1000-memory.dmp
memory/4876-9-0x00007FFAD5830000-0x00007FFAD62F1000-memory.dmp
memory/4876-11-0x00007FFAD5830000-0x00007FFAD62F1000-memory.dmp
memory/4876-12-0x000000001C440000-0x000000001C490000-memory.dmp
memory/4876-13-0x000000001C550000-0x000000001C602000-memory.dmp
memory/4876-14-0x00007FFAD5830000-0x00007FFAD62F1000-memory.dmp