Resubmissions

07-02-2022 00:34

220207-aw81qsdce2 10

Analysis

  • max time kernel
    154s
  • max time network
    243s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    07-02-2022 00:34

General

  • Target

    Hulu.exe

  • Size

    1.4MB

  • MD5

    64be5264f3a58325446865be38c05b34

  • SHA1

    fdbad9468075747a4999b7b30fa7cb7b60fdcb4e

  • SHA256

    561a8b830e902a0ba18457a0aa8db8a8c663de8ee33e6009f236cedff00f8cbb

  • SHA512

    d48fac03082d1f12cf1d175978f64e9d2df467828601b34474c77bf139c6c0dae5002ad2f1e106c46e6fb6c4ef8083e011931a74dd0adcbb0a43cdeae16cd0d0

Score
8/10

Malware Config

Signatures

  • Executes dropped EXE 3 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Drops startup file 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 4 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 49 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Hulu.exe
    "C:\Users\Admin\AppData\Local\Temp\Hulu.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2212
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c echo xlEPMOAZC
      2⤵
        PID:3688
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c C:\Windows\system32\cmd.exe < Strazii.xlsm
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3160
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe
          3⤵
          • Suspicious use of WriteProcessMemory
          PID:2100
          • C:\Windows\SysWOW64\findstr.exe
            findstr /V /R "^unowfSGqElRNjSdIsHGXTopdtGkBtbAqMZrTUgLOVVaETGrALikdphrYfSXIHyWiJRqhPbOeWSeXPEbbDKPWjlRmWyDwsruPYkUwFPLgzoxdlypLcmyWfqVmqBsKTMLSLjYEJcRNZBDrPAgQW$" Nel.xlm
            4⤵
              PID:2700
            • C:\Users\Admin\AppData\Roaming\rzVBBfiLGjYqEZEI\Custodiva.exe.com
              Custodiva.exe.com x
              4⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:464
              • C:\Users\Admin\AppData\Roaming\rzVBBfiLGjYqEZEI\Custodiva.exe.com
                C:\Users\Admin\AppData\Roaming\rzVBBfiLGjYqEZEI\Custodiva.exe.com x
                5⤵
                • Executes dropped EXE
                • Drops startup file
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:1020
                • C:\Users\Admin\AppData\Roaming\rzVBBfiLGjYqEZEI\RegAsm.exe
                  C:\Users\Admin\AppData\Roaming\rzVBBfiLGjYqEZEI\RegAsm.exe
                  6⤵
                  • Executes dropped EXE
                  PID:3588
            • C:\Windows\SysWOW64\PING.EXE
              ping 127.0.0.1 -n 30
              4⤵
              • Runs ping.exe
              PID:3756
      • C:\Windows\system32\MusNotifyIcon.exe
        %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
        1⤵
        • Checks processor information in registry
        PID:2512
      • C:\Windows\system32\MusNotifyIcon.exe
        %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 13
        1⤵
        • Checks processor information in registry
        PID:3832
      • C:\Windows\System32\svchost.exe
        C:\Windows\System32\svchost.exe -k NetworkService -p
        1⤵
        • Drops file in Windows directory
        • Modifies data under HKEY_USERS
        PID:1820

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • memory/1020-138-0x00000000012B0000-0x00000000012B1000-memory.dmp

        Filesize

        4KB

      • memory/3588-139-0x0000000001000000-0x0000000001050000-memory.dmp

        Filesize

        320KB

      • memory/3588-144-0x0000000005A60000-0x0000000006004000-memory.dmp

        Filesize

        5.6MB

      • memory/3588-147-0x0000000005550000-0x00000000055E2000-memory.dmp

        Filesize

        584KB

      • memory/3588-148-0x00000000057C0000-0x0000000005982000-memory.dmp

        Filesize

        1.8MB

      • memory/3588-149-0x00000000055F0000-0x0000000005666000-memory.dmp

        Filesize

        472KB

      • memory/3588-150-0x00000000054B0000-0x0000000005A54000-memory.dmp

        Filesize

        5.6MB