Analysis

  • max time kernel
    122s
  • max time network
    171s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    01/03/2024, 18:31

General

  • Target

    873D9DB7925A4EC75BFECF636D0EF454.exe

  • Size

    69KB

  • MD5

    873d9db7925a4ec75bfecf636d0ef454

  • SHA1

    aa3f6724934db998d963cd18d2b358a62dfcdbbc

  • SHA256

    689d3736122823defa550657e98157f7c57646369df7081cbc8efb245d8a0a06

  • SHA512

    00570e3cab520d34db457b50a4f2be0604baa62e9f95a28d1d7e36127064954199c95ad90d9a49ec3e06db04a1b49c6e3cdeef2ddbc20b7be457edf313e3d616

  • SSDEEP

    1536:2uwRszlg+JOyyJJ9OVnFbI7pTmZmCZseQvDjvaUH57:2uwRWO+JMOVnFbI7QICZRSaUZ7

Score
10/10

Malware Config

Signatures

  • AsyncRat

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

  • Async RAT payload 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe
    "C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1920
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svhost" /tr '"C:\Users\Admin\AppData\Roaming\svhost.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2052
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "svhost" /tr '"C:\Users\Admin\AppData\Roaming\svhost.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:2532
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB5D7.tmp.bat""
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2720
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2540
      • C:\Users\Admin\AppData\Roaming\svhost.exe
        "C:\Users\Admin\AppData\Roaming\svhost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2804

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmpB5D7.tmp.bat

          Filesize

          150B

          MD5

          956d5b8c0359c39874ed5c93efe4b93b

          SHA1

          0489f7b5eb5a1a4008bce825fbed183760c86537

          SHA256

          dad2fdbe55a92859a7841f23752193e45ce1295aa130f1eaf44e3c7e27cc2cf3

          SHA512

          08b746b705aeb3f48e6c17ce26478d2227514965210a7e1710f2529740ef4ef5d07f3a1044275363418042884838e8fdd41183dd4bcb717028f7a1c5fef3b691

        • C:\Users\Admin\AppData\Roaming\svhost.exe

          Filesize

          69KB

          MD5

          873d9db7925a4ec75bfecf636d0ef454

          SHA1

          aa3f6724934db998d963cd18d2b358a62dfcdbbc

          SHA256

          689d3736122823defa550657e98157f7c57646369df7081cbc8efb245d8a0a06

          SHA512

          00570e3cab520d34db457b50a4f2be0604baa62e9f95a28d1d7e36127064954199c95ad90d9a49ec3e06db04a1b49c6e3cdeef2ddbc20b7be457edf313e3d616

        • memory/1920-0-0x0000000001040000-0x0000000001058000-memory.dmp

          Filesize

          96KB

        • memory/1920-1-0x0000000074EA0000-0x000000007558E000-memory.dmp

          Filesize

          6.9MB

        • memory/1920-2-0x0000000000610000-0x0000000000650000-memory.dmp

          Filesize

          256KB

        • memory/1920-11-0x0000000074EA0000-0x000000007558E000-memory.dmp

          Filesize

          6.9MB

        • memory/2804-16-0x0000000000B20000-0x0000000000B38000-memory.dmp

          Filesize

          96KB

        • memory/2804-17-0x0000000074E50000-0x000000007553E000-memory.dmp

          Filesize

          6.9MB

        • memory/2804-18-0x0000000004B60000-0x0000000004BA0000-memory.dmp

          Filesize

          256KB

        • memory/2804-36-0x0000000074E50000-0x000000007553E000-memory.dmp

          Filesize

          6.9MB

        • memory/2804-37-0x0000000004B60000-0x0000000004BA0000-memory.dmp

          Filesize

          256KB