Analysis

  • max time kernel
    139s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 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 21 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe
    "C:\Users\Admin\AppData\Local\Temp\873D9DB7925A4EC75BFECF636D0EF454.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:460
    • 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:3312
      • 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:628
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC043.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4560
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:4140
      • C:\Users\Admin\AppData\Roaming\svhost.exe
        "C:\Users\Admin\AppData\Roaming\svhost.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:864

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\tmpC043.tmp.bat

          Filesize

          150B

          MD5

          9ad37ebb44ffbb56c01934fbfebd073b

          SHA1

          e895a634c897ace6cd5d8f1315a2ea2bbb98ff32

          SHA256

          630644ad287fc01e4d432b7b379aefc9f90da37c7b3bb10a8eb7e3f99913f970

          SHA512

          4cbaaaa9615d66a0e1bd936fb67d19b6e376d82e4962a4a04c4363a9d0435324015aff252c1bc30cbd464cff25c2d7b64711dea835a23110f68b1318096d3938

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

          Filesize

          69KB

          MD5

          873d9db7925a4ec75bfecf636d0ef454

          SHA1

          aa3f6724934db998d963cd18d2b358a62dfcdbbc

          SHA256

          689d3736122823defa550657e98157f7c57646369df7081cbc8efb245d8a0a06

          SHA512

          00570e3cab520d34db457b50a4f2be0604baa62e9f95a28d1d7e36127064954199c95ad90d9a49ec3e06db04a1b49c6e3cdeef2ddbc20b7be457edf313e3d616

        • memory/460-3-0x0000000005880000-0x000000000591C000-memory.dmp

          Filesize

          624KB

        • memory/460-0-0x0000000075320000-0x0000000075AD0000-memory.dmp

          Filesize

          7.7MB

        • memory/460-8-0x0000000075320000-0x0000000075AD0000-memory.dmp

          Filesize

          7.7MB

        • memory/460-2-0x00000000057D0000-0x00000000057E0000-memory.dmp

          Filesize

          64KB

        • memory/460-1-0x0000000000CD0000-0x0000000000CE8000-memory.dmp

          Filesize

          96KB

        • memory/864-13-0x0000000075270000-0x0000000075A20000-memory.dmp

          Filesize

          7.7MB

        • memory/864-14-0x00000000056C0000-0x00000000056D0000-memory.dmp

          Filesize

          64KB

        • memory/864-15-0x0000000006000000-0x00000000065A4000-memory.dmp

          Filesize

          5.6MB

        • memory/864-16-0x0000000005A50000-0x0000000005AB6000-memory.dmp

          Filesize

          408KB

        • memory/864-17-0x0000000075270000-0x0000000075A20000-memory.dmp

          Filesize

          7.7MB

        • memory/864-18-0x00000000056C0000-0x00000000056D0000-memory.dmp

          Filesize

          64KB