Analysis
- max time kernel
148s - max time network
150s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
04/08/2026, 01:16
General
- Target 6ba71ed48ddc33ed555f8f9a99e104970c52011e732a27d2783eec06fbed4ba6.exe
- Size 245KB
- Sample260804-bnacwazgla
- SHA256 6ba71ed48ddc33ed555f8f9a99e104970c52011e732a27d2783eec06fbed4ba6
Malware Config
Extracted
-
asyncrat
-
Venom RAT + HVNC + Stealer + Grabber v6.0.3
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Default
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vs_buildtools
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delay
1
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install
true
-
install_file
vs_buildtools.exe
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install_folder
%AppData%
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local_host
127.0.0.1
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 33 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of SetWindowsHookEx 1 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
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C:\Users\Admin\AppData\Local\Temp\6ba71ed48ddc33ed555f8f9a99e104970c52011e732a27d2783eec06fbed4ba6.exe"C:\Users\Admin\AppData\Local\Temp\6ba71ed48ddc33ed555f8f9a99e104970c52011e732a27d2783eec06fbed4ba6.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 "vs_buildtools" /tr '"C:\Users\Admin\AppData\Roaming\vs_buildtools.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 "vs_buildtools" /tr '"C:\Users\Admin\AppData\Roaming\vs_buildtools.exe"'3⤵
- Scheduled Task/Job: Scheduled Task
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-
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9DBD.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\vs_buildtools.exe"C:\Users\Admin\AppData\Roaming\vs_buildtools.exe"3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
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-
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C:\Users\Admin\AppData\Roaming\vs_buildtools.exe"C:\Users\Admin\AppData\Roaming\vs_buildtools.exe"1⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
tmp9DBD.tmp.bat
DataLogs.conf
vs_buildtools.exe
memory/4824-0-0x00007FFF9595F000-0x00007FFF95960000-memory.dmp
memory/4824-1-0x00000000004D0000-0x0000000000512000-memory.dmp
memory/4824-3-0x00007FFF957D0000-0x00007FFF96174000-memory.dmp
memory/4824-4-0x00007FFF957D0000-0x00007FFF96174000-memory.dmp
memory/4824-5-0x00007FFF957D0000-0x00007FFF96174000-memory.dmp
memory/4824-6-0x00007FFF957D0000-0x00007FFF96174000-memory.dmp
memory/4824-7-0x00007FFF957D0000-0x00007FFF96174000-memory.dmp
memory/4824-12-0x00007FFF957D0000-0x00007FFF96174000-memory.dmp