Analysis
- max time kernel
95s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
30/09/2024, 12:18
General
- Target Client-built.exe
- Size 3.1MB
- Sample240930-pgm72svcnp
- SHA256 6f0b640dbd519d8aa982534a4463aa43fe557f3582bd63276a2bd91e43d2eadf
Malware Config
Extracted
-
quasar
-
1.4.1
-
Office04
-
124.197.52.189:4782
-
ba23b2fe-45c8-40c7-9af1-0e3d55e8cff5
-
encryption_key
DADCD3BA446527090CDE2CF3C12DBD5DABE4A3D5
-
install_name
Client.exe
-
log_directory
Logs
-
reconnect_delay
3000
-
startup_key
DDLC Client Startup
-
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 3 IoCs
- Suspicious use of SendNotifyMessage 3 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 "DDLC Client 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 FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\SYSTEM32\schtasks.exe"schtasks" /create /tn "DDLC Client 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/868-10-0x00007FFE63770000-0x00007FFE64231000-memory.dmp
memory/868-11-0x00007FFE63770000-0x00007FFE64231000-memory.dmp
memory/868-12-0x000000001C1C0000-0x000000001C210000-memory.dmp
memory/868-13-0x000000001C2D0000-0x000000001C382000-memory.dmp
memory/868-14-0x00007FFE63770000-0x00007FFE64231000-memory.dmp
memory/868-17-0x000000001C240000-0x000000001C252000-memory.dmp
memory/868-18-0x000000001CED0000-0x000000001CF0C000-memory.dmp
memory/2156-0-0x00007FFE63773000-0x00007FFE63775000-memory.dmp
memory/2156-1-0x0000000000A10000-0x0000000000D34000-memory.dmp
memory/2156-2-0x00007FFE63770000-0x00007FFE64231000-memory.dmp
memory/2156-9-0x00007FFE63770000-0x00007FFE64231000-memory.dmp