Analysis
- max time kernel
150s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
10/08/2026, 15:19
General
- Target 9ff71870aa71591e2763e86b228ddfd9aacc32bc6678ad10063a2bd3177a2475.js
- Size 1.7MB
- Sample260810-sp6wxaxtcs
- SHA256 9ff71870aa71591e2763e86b228ddfd9aacc32bc6678ad10063a2bd3177a2475
Malware Config
Extracted
-
asyncrat
-
Default
-
ss423guoma.localto.net:8148:8848
-
ss423guoma.localto.net:8233:8848
-
delay
1
-
install
false
-
install_folder
%AppData%
-
local_host
127.0.0.1
Signatures
- Family: AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Uses the VBS compiler for execution 1 TTPs
- Suspicious use of SetThreadContext 1 IoCs
- Command and Scripting Interpreter: JavaScript 1 TTPs
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Using powershell.exe command.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Windows\system32\wscript.exewscript.exe C:\Users\Admin\AppData\Local\Temp\9ff71870aa71591e2763e86b228ddfd9aacc32bc6678ad10063a2bd3177a2475.js1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\Temp\decoded.ps1"2⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe#by-unknown3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
-
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
__PSScriptPolicyTest_nmbbewlw.fsi.ps1
decoded.ps1
memory/1748-38-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-32-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-12-0x000001FDAE5F0000-0x000001FDAE6AE000-memory.dmp
memory/1748-13-0x000001FDAD4B0000-0x000001FDAD4C0000-memory.dmp
memory/1748-14-0x000001FDAE540000-0x000001FDAE562000-memory.dmp
memory/1748-34-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-40-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-41-0x000001FDAE580000-0x000001FDAE581000-memory.dmp
memory/1748-2-0x000001FDAD4B0000-0x000001FDAD4C0000-memory.dmp
memory/1748-15-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-36-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-3-0x000001FDAE1B0000-0x000001FDAE1D2000-memory.dmp
memory/1748-30-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-29-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-26-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-24-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-22-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-20-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-18-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/1748-16-0x000001FDAE540000-0x000001FDAE55C000-memory.dmp
memory/5052-42-0x0000000000400000-0x000000000041E000-memory.dmp