Analysis

  • max time kernel
    85s
  • max time network
    107s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230621-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230621-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/07/2023, 04:52

General

  • Target

    file.exe

  • Size

    1.1MB

  • MD5

    10f02ac67d619ef4ed2b5cbe14e556db

  • SHA1

    125b59e8cba7dfd2095cda60c63a23def7360943

  • SHA256

    f42012d42d1efb0ce9a28eac63f9512ad4d873cf22d1148c71ce4230ad26abe2

  • SHA512

    6fbe78b7321047166ec4a8ed189154b198b23acd72b03915d26f5978479fd484a9f56354569644388381949fedaeadbcc794d25458b91eeae9b7d440ee52946d

  • SSDEEP

    24576:JfOyxyU3MB2dpS2WWy8vWwGQfOI2huiQhWX+5GLEl/nNUWCMW6:JGAyUe2drTwQ2r8GXQ/VvT

Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs net.exe
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4784
    • C:\Users\Admin\AppData\Local\Temp\is-3NLH1.tmp\is-B7K5H.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-3NLH1.tmp\is-B7K5H.tmp" /SL4 $1C0022 "C:\Users\Admin\AppData\Local\Temp\file.exe" 922350 73728
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1100
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1332
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 2
          4⤵
            PID:4612
        • C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe
          "C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe"
          3⤵
          • Executes dropped EXE
          PID:2680

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe

            Filesize

            1.1MB

            MD5

            8dddbb2925650c158676cf0b29ce6d10

            SHA1

            af8296ae35f58265a2852240a804e0ed9a661c9a

            SHA256

            106220886bf4198d697c2fb507771ded2ed503c97e6a5d15c176771d9d022f17

            SHA512

            6604dd4c1a2e1e113d0946c705892de4067ca8632a1f6e28e975675521388ed8a5e800a509923b9807d9e8608021b0fd3a9211e9a4b5ba8c37d7008ab74c15f6

          • C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe

            Filesize

            1.1MB

            MD5

            8dddbb2925650c158676cf0b29ce6d10

            SHA1

            af8296ae35f58265a2852240a804e0ed9a661c9a

            SHA256

            106220886bf4198d697c2fb507771ded2ed503c97e6a5d15c176771d9d022f17

            SHA512

            6604dd4c1a2e1e113d0946c705892de4067ca8632a1f6e28e975675521388ed8a5e800a509923b9807d9e8608021b0fd3a9211e9a4b5ba8c37d7008ab74c15f6

          • C:\Program Files (x86)\RejSpacer72\readme.txt

            Filesize

            4KB

            MD5

            ce494d2d223aed950fea67f657d3fa3e

            SHA1

            97a19c02487c41e3a079cd6764afffeb5e838b26

            SHA256

            c8fa111c5b9537e3b6cab9ba763e164e27fa469f2232b82a54b206a7d892b9e9

            SHA512

            687bf3bd7de28dc45ea622672dc59d7e45d9ce83530a7db6462447ea247a9bde061738c454e09b48531aab9cce802c8491aa730e4da65e63daf31c65ffc39fe1

          • C:\Users\Admin\AppData\Local\Temp\is-3NLH1.tmp\is-B7K5H.tmp

            Filesize

            664KB

            MD5

            ce35b2dad10a0e6d5e016772efb75ad2

            SHA1

            ac38173e753c499655ba566493e3c3ff71878d92

            SHA256

            31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

            SHA512

            cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

          • C:\Users\Admin\AppData\Local\Temp\is-3NLH1.tmp\is-B7K5H.tmp

            Filesize

            664KB

            MD5

            ce35b2dad10a0e6d5e016772efb75ad2

            SHA1

            ac38173e753c499655ba566493e3c3ff71878d92

            SHA256

            31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

            SHA512

            cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

          • C:\Users\Admin\AppData\Local\Temp\is-SDQF8.tmp\_isetup\_iscrypt.dll

            Filesize

            2KB

            MD5

            a69559718ab506675e907fe49deb71e9

            SHA1

            bc8f404ffdb1960b50c12ff9413c893b56f2e36f

            SHA256

            2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

            SHA512

            e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

          • memory/1100-204-0x0000000002230000-0x0000000002231000-memory.dmp

            Filesize

            4KB

          • memory/1100-324-0x0000000000400000-0x00000000004B5000-memory.dmp

            Filesize

            724KB

          • memory/2680-323-0x0000000000400000-0x0000000001318000-memory.dmp

            Filesize

            15.1MB

          • memory/4784-133-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/4784-325-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB