Overview

overview

10

Static

static

10

UwU-client.exe

windows10-2004-x64

10

UwU-client.exe

windows11-ltsc_2024-x64

10

Resubmissions

14/10/2026, 00:17

261014-ak2saasy6q10

13/10/2026, 23:57

261013-3zmwwssx6q10

12/10/2026, 17:20

261012-vwrrnsytfv10

Analysis

  • max time kernel
    150s
  • max time network
    139s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    14/10/2026, 00:17

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General

  • Target
    UwU-client.exe
  • Size 244KB
  • Sample261014-ak2saasy6q
  • SHA256 ef977b955df7ad07c5c5e061331a92b9281b78d1dd5d2364907d1872f0fd6367
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
adwarediscoveryexecutionasyncratpersistenceratspyware

Malware Config

Signatures

  • Family: AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

    ratasyncrat
  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Downloads MZ/PE file 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Contacts third-party web service commonly abused for C2 1 TTPs 3 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
    execution
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

    execution
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

    discovery
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Modifies registry class 40 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

    persistenceexecution
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 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.

    persistence

Processes

  • C:\Users\Admin\AppData\Local\Temp\UwU-client.exe
    "C:\Users\Admin\AppData\Local\Temp\UwU-client.exe"
    1⤵
    • Downloads MZ/PE file
    • Drops file in Windows directory
    • Reads the TCP/IP host and domain name from the registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1604
    • C:\Users\Admin\AppData\Local\Temp\UwUAntiUSB.exe
      "C:\Users\Admin\AppData\Local\Temp\UwUAntiUSB.exe"
      2⤵
      • Executes dropped EXE
      PID:5708
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "UwUsvchost" /tr '"C:\Windows\pidor\UwUTEST\UwUsvchost.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:124
      • C:\Windows\system32\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "UwUsvchost" /tr '"C:\Windows\pidor\UwUTEST\UwUsvchost.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:5056
    • C:\Windows\explorer.exe
      "C:\Windows\explorer.exe" /select,"C:\Users\Admin\AppData\Local\Temp\UwU-client.exe"
      2⤵
        PID:908
      • C:\Windows\SYSTEM32\wscript.exe
        "wscript.exe" //B //Nologo "C:\Users\Admin\AppData\Local\Temp\UwUwd.vbs"
        2⤵
        • Executes a VBScript file via the Windows Script Host.
        PID:2644
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      PID:5028
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:5232
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k GPSvcGroup
        1⤵
          PID:3760

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              UwUAntiUSB.exe
              • Path C:\Users\Admin\AppData\Local\Temp\UwUAntiUSB.exe
              • Size 5KB
              • SHA256 e47fe8f340543f636a58d47705c9853de5bd3bfa599a4fb02f97d4c879afae89
              • MD5 SHA1 SHA512 SSDEEP TLSH
              Submit Download

              UwUwd.vbs
              • Path C:\Users\Admin\AppData\Local\Temp\UwUwd.vbs
              • Size 278B
              • SHA256 7c974c63763e649b39084652df3433a3816568f706c857e67df9e28a8824a6fb
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              memory/1604-0-0x00000144194D0000-0x0000014419512000-memory.dmp
              Download

              memory/1604-1-0x00007FFF3E14F000-0x00007FFF3E150000-memory.dmp
              Download

              memory/1604-2-0x00007FFF3DFC0000-0x00007FFF3E964000-memory.dmp
              Download

              memory/1604-3-0x00007FFF3DFC0000-0x00007FFF3E964000-memory.dmp
              Download

              memory/1604-16-0x00007FFF3DFC0000-0x00007FFF3E964000-memory.dmp
              Download

              memory/1604-17-0x00007FFF3DFC0000-0x00007FFF3E964000-memory.dmp
              Download

              memory/5708-12-0x0000015B7CD80000-0x0000015B7CD88000-memory.dmp
              Download

              memory/5708-13-0x00007FFF3DFC0000-0x00007FFF3E964000-memory.dmp
              Download

              memory/5708-18-0x00007FFF3DFC0000-0x00007FFF3E964000-memory.dmp
              Download