Analysis

  • max time kernel
    149s
  • max time network
    148s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    02/06/2026, 02:25

General

  • Target
    cxvlasdasd.exe
  • Size 45KB
  • Sample260602-cwn2nsc18l
  • SHA256 e18c55cf32307cee52793be5fb871cdebdca9318315afac6e855afa4f39d6238
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • spica.jp.net:80

  • spica.jp.net:443

  • www.spica.jp.net:80

  • www.spica.jp.net:443

  • remote.spica.jp.net:80

  • remote.spica.jp.net:443

  • hack.spica.jp.net:80

  • hack.spica.jp.net:443

  • malware.spica.jp.net:80

  • malware.spica.jp.net:443

  • acas.spica.jp.net:80

  • acas.spica.jp.net:443

Mutex
  • AWctMUS7cRHe

Attributes
  • delay

    3

  • install

    true

  • install_file

    cxvlasdasd.exe

  • install_folder

    %AppData%

aes.plain

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).

  • System Location Discovery: System Language Discovery 1 TTPs 7 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 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cxvlasdasd.exe
    "C:\Users\Admin\AppData\Local\Temp\cxvlasdasd.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3528
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "cxvlasdasd" /tr '"C:\Users\Admin\AppData\Roaming\cxvlasdasd.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4432
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "cxvlasdasd" /tr '"C:\Users\Admin\AppData\Roaming\cxvlasdasd.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:6016
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpF26E.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2456
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:6088
      • C:\Users\Admin\AppData\Roaming\cxvlasdasd.exe
        "C:\Users\Admin\AppData\Roaming\cxvlasdasd.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5732
  • C:\Users\Admin\AppData\Roaming\cxvlasdasd.exe
    "C:\Users\Admin\AppData\Roaming\cxvlasdasd.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:3236

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        cxvlasdasd.exe.log

        • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\cxvlasdasd.exe.log
        • Size 522B
        • SHA256 3a8c487575696f7ace931dc220c85a47d33e0ead96aa9e47c705fee5dfac667a
        • MD5 SHA1 SHA512 TLSH

        tmpF26E.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmpF26E.tmp.bat
        • Size 154B
        • SHA256 1e1c984f2a4c61bf2abf43726c9df5d3530dc7535728079f59b41ccc7980ee4a
        • MD5 SHA1 SHA512 TLSH

        cxvlasdasd.exe

        • Path C:\Users\Admin\AppData\Roaming\cxvlasdasd.exe
        • Size 45KB
        • SHA256 e18c55cf32307cee52793be5fb871cdebdca9318315afac6e855afa4f39d6238
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3528-0-0x0000000000750000-0x0000000000762000-memory.dmp

        memory/3528-1-0x0000000005250000-0x0000000005260000-memory.dmp

        memory/3528-2-0x0000000005260000-0x00000000052FC000-memory.dmp