Analysis
- max time kernel
84s - max time network
133s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
18/06/2024, 16:27
General
- Target KR6nDu9fLhop1bFe.exe
- Size 3.1MB
- Sample240618-tx8adavhlj
- SHA256 164e19d48c8d3ed423d4d4c68dff47899f375b6ef4f2a27005562e16b3a8d33f
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
94.228.166.40:4782
-
172a89d7-b9b2-4d82-b5ed-6beb5326f544
-
encryption_key
7970C2029EDBB83E6BD65073BE18684AC9FF3F48
-
install_name
KR6nDu9fLhop1bFe.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
Defender.proces
-
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).
- 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 FindShellTrayWindow 2 IoCs
- Suspicious use of SendNotifyMessage 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\KR6nDu9fLhop1bFe.exe"C:\Users\Admin\AppData\Local\Temp\KR6nDu9fLhop1bFe.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Defender.proces" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe" /rl HIGHEST /f2⤵
- Scheduled Task/Job: Scheduled Task
-
-
C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe"C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "Defender.proces" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\KR6nDu9fLhop1bFe.exe" /rl HIGHEST /f3⤵
- Scheduled Task/Job: Scheduled Task
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
KR6nDu9fLhop1bFe.exe.log
KR6nDu9fLhop1bFe.exe
memory/3912-0-0x00007FFBA4AA3000-0x00007FFBA4AA5000-memory.dmp
memory/3912-1-0x00000000006C0000-0x00000000009E4000-memory.dmp
memory/3912-2-0x00007FFBA4AA0000-0x00007FFBA5561000-memory.dmp
memory/3912-10-0x00007FFBA4AA0000-0x00007FFBA5561000-memory.dmp
memory/4512-11-0x00007FFBA4AA0000-0x00007FFBA5561000-memory.dmp
memory/4512-12-0x00007FFBA4AA0000-0x00007FFBA5561000-memory.dmp
memory/4512-13-0x000000001C7F0000-0x000000001C840000-memory.dmp
memory/4512-14-0x000000001C900000-0x000000001C9B2000-memory.dmp
memory/4512-15-0x000000001C860000-0x000000001C872000-memory.dmp
memory/4512-16-0x000000001C8C0000-0x000000001C8FC000-memory.dmp
memory/4512-17-0x00007FFBA4AA0000-0x00007FFBA5561000-memory.dmp