Analysis
- max time kernel
149s - max time network
19s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
24/07/2026, 02:23
General
- Target TENDER-20005953911.vbs
- Size 37KB
- Sample260724-cvdvbaeb77
- SHA256 642905ce09772b7ee37efac563f1d14581b2d677a738aa8f44244659d331f921
Malware Config
Signatures
- Family: SiriusRAT
SiriusRAT is a Windows RAT written in C++ with HVNC, offline keylogging, and remote desktop capabilities.
- Detects SiriusRAT 1 IoCs
- Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
- Badlisted process makes network request 1 IoCs
Network request originating from process or tool commonly abused by malware.
- Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
- Suspicious use of SetThreadContext 1 IoCs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
- Suspicious behavior: EnumeratesProcesses 56 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 10 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:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\TENDER-20005953911.vbs"1⤵
- Executes a VBScript file via the Windows Script Host.
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -NoProfile -Command "Invoke-Expression $env:polysiloxanes"1⤵
- Process spawned unexpected child process
- Badlisted process makes network request
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Caspol.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\Caspol.exe2⤵
-
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C:\Windows\system32\conhost.execonhost.exe1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe2⤵
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
memory/3196-23-0x0000000140000000-0x0000000140558000-memory.dmp
memory/4112-12-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-14-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-5-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-6-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-7-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-8-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-9-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-10-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-11-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-0-0x00007FFDCCC7F000-0x00007FFDCCC80000-memory.dmp
memory/4112-4-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-15-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-13-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-16-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-17-0x0000020AD57E0000-0x0000020AD5894000-memory.dmp
memory/4112-18-0x0000020ABCDD0000-0x0000020ABCDDA000-memory.dmp
memory/4112-19-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-21-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-22-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp
memory/4112-3-0x0000020ABCD90000-0x0000020ABCDB2000-memory.dmp
memory/4112-25-0x00007FFDCCAF0000-0x00007FFDCD494000-memory.dmp