Analysis
- max time kernel
140s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20230831-en - resource tags
- submitted
02/09/2023, 01:00
General
- Target c63ce128ee4c0442e303b86d27e3e7df8eff15a04a44ada8cabfa965144ccf56.exe
- Size 66KB
- Sample230902-bcsp3sae2s
- SHA256 c63ce128ee4c0442e303b86d27e3e7df8eff15a04a44ada8cabfa965144ccf56
Malware Config
Extracted
-
asyncrat
-
| Edit 3LOSH RAT
-
Default
-
marli27.duckdns.org:2727
-
AsyncMutex_6SI8OkPnk
-
delay
3
-
install
false
-
install_folder
%AppData%
Signatures
- AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Drops file in System32 directory 1 IoCs
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 2 IoCs
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 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\c63ce128ee4c0442e303b86d27e3e7df8eff15a04a44ada8cabfa965144ccf56.exe"C:\Users\Admin\AppData\Local\Temp\c63ce128ee4c0442e303b86d27e3e7df8eff15a04a44ada8cabfa965144ccf56.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
memory/1428-1-0x00000000744F0000-0x0000000074CA0000-memory.dmp
memory/1428-0-0x00000000007B0000-0x00000000007C6000-memory.dmp
memory/1428-9-0x00000000050A0000-0x00000000050B0000-memory.dmp
memory/1428-10-0x0000000005A30000-0x0000000005FD4000-memory.dmp
memory/1428-11-0x0000000005670000-0x0000000005702000-memory.dmp
memory/1428-12-0x0000000005660000-0x000000000566A000-memory.dmp
memory/1428-13-0x00000000744F0000-0x0000000074CA0000-memory.dmp
memory/1428-14-0x00000000050A0000-0x00000000050B0000-memory.dmp