Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    11/05/2026, 02:17

General

  • Target
    AsyncRat.exe
  • Size 56KB
  • Sample260511-cqtpzaas71
  • SHA256 e21df37bfcee66180ae1004df03b569333c23bad60f1cde991352d594b0a1aee
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • prefer.it.com:443

  • prefer.it.com:8848

  • prefer.it.com:8080

Mutex
  • TBqzBekQyHvO

Attributes
  • delay

    3

  • install

    true

  • install_file

    AsyncRat.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 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AsyncRat.exe
    "C:\Users\Admin\AppData\Local\Temp\AsyncRat.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1592
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "AsyncRat" /tr '"C:\Users\Admin\AppData\Roaming\AsyncRat.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4384
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "AsyncRat" /tr '"C:\Users\Admin\AppData\Roaming\AsyncRat.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:5040
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp21FA.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4828
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:2820
      • C:\Users\Admin\AppData\Roaming\AsyncRat.exe
        "C:\Users\Admin\AppData\Roaming\AsyncRat.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1672
  • C:\Users\Admin\AppData\Roaming\AsyncRat.exe
    "C:\Users\Admin\AppData\Roaming\AsyncRat.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:4248

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        AsyncRat.exe.log

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

        tmp21FA.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp21FA.tmp.bat
        • Size 152B
        • SHA256 410d33a0b1432ad387bdedc1467335a17c711757ed6237607e319ded090ec934
        • MD5 SHA1 SHA512 TLSH

        AsyncRat.exe

        • Path C:\Users\Admin\AppData\Roaming\AsyncRat.exe
        • Size 56KB
        • SHA256 e21df37bfcee66180ae1004df03b569333c23bad60f1cde991352d594b0a1aee
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1592-0-0x0000000000020000-0x0000000000034000-memory.dmp

        memory/1592-1-0x00000000050D0000-0x00000000050E0000-memory.dmp

        memory/1592-2-0x0000000005190000-0x000000000522C000-memory.dmp

        memory/1592-9-0x0000000004FF0000-0x00000000050B1000-memory.dmp

        memory/1592-7-0x00000000049E0000-0x0000000004FE2000-memory.dmp

        memory/1672-15-0x0000000005E40000-0x0000000005F01000-memory.dmp

        memory/1672-14-0x0000000005830000-0x0000000005E32000-memory.dmp

        memory/4248-17-0x0000000005D00000-0x0000000005DC1000-memory.dmp

        memory/4248-16-0x00000000056F0000-0x0000000005CF2000-memory.dmp