Analysis
- max time kernel
149s - max time network
148s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
09/08/2026, 17:55
General
- Target System.exe
- Size 63KB
- Sample260809-whtjsasgrb
- SHA256 2bacc73b133acd79185f75edd32b60f24bb23d9ad08125ccc36cbd2d389ce2e4
Malware Config
Extracted
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asyncrat
-
5.0.5
-
Venom Clients
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windows-services.linkpc.net:4449
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Venom_RAT_HVNC_Mutex_Venom RAT_HVNC
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delay
1
-
install
true
-
install_file
System.exe
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install_folder
%AppData%
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Async RAT payload 1 IoCs
- Executes dropped EXE 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 2 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- Delays execution with timeout.exe 1 IoCs
- Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 31 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 5 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\System.exe"C:\Users\Admin\AppData\Local\Temp\System.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "System" /tr '"C:\Users\Admin\AppData\Roaming\System.exe"' & exit2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "System" /tr '"C:\Users\Admin\AppData\Roaming\System.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9159.tmp.bat""2⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\System.exe"C:\Users\Admin\AppData\Roaming\System.exe"3⤵
- Executes dropped EXE
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-
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C:\Users\Admin\AppData\Roaming\System.exe"C:\Users\Admin\AppData\Roaming\System.exe"1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp9159.tmp.bat
System.exe
memory/1272-6-0x00007FF90CA40000-0x00007FF90D3E4000-memory.dmp
memory/1272-3-0x00007FF90CA40000-0x00007FF90D3E4000-memory.dmp
memory/1272-4-0x00007FF90CA40000-0x00007FF90D3E4000-memory.dmp
memory/1272-5-0x00007FF90CA40000-0x00007FF90D3E4000-memory.dmp
memory/1272-0-0x0000000000FF0000-0x0000000001006000-memory.dmp
memory/1272-7-0x00007FF90CA40000-0x00007FF90D3E4000-memory.dmp
memory/1272-8-0x00007FF90CA40000-0x00007FF90D3E4000-memory.dmp
memory/1272-9-0x00007FF90CA40000-0x00007FF90D3E4000-memory.dmp
memory/1272-13-0x00007FF90CA40000-0x00007FF90D3E4000-memory.dmp
memory/1272-2-0x00007FF90CA40000-0x00007FF90D3E4000-memory.dmp
memory/1272-1-0x00007FF90CBCF000-0x00007FF90CBD0000-memory.dmp
memory/1272-18-0x00007FF90CA40000-0x00007FF90D3E4000-memory.dmp