Analysis

  • max time kernel
    76s
  • max time network
    117s
  • 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, 10:32

General

  • Target

    file.exe

  • Size

    1.1MB

  • MD5

    fbfea617467d03515ac2a6baedce87c1

  • SHA1

    830c28207bf689f02d728b3b2643700cc8fb4c3b

  • SHA256

    e88259872bb2df0913c156511df3eba707e0a39f520fecd3316654c26cd05334

  • SHA512

    5da3bd14d8abb0716d1235b726a7e73df8abdffe77c8b428b70a7685cbddf2de65e5b9301fe479b57f39690c0240f2e7c4e09567ce8f677d4a9cf031227308af

  • SSDEEP

    24576:JfOy2xV+GXtP1PWpZu7tZTeL9dctfnNUWCMW6:JGR+0p3R8RWvT

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:4864
    • C:\Users\Admin\AppData\Local\Temp\is-VI77T.tmp\is-42ALL.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-VI77T.tmp\is-42ALL.tmp" /SL4 $F016C "C:\Users\Admin\AppData\Local\Temp\file.exe" 929047 73728
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1260
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2860
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 2
          4⤵
            PID:4184
        • C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe
          "C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe"
          3⤵
          • Executes dropped EXE
          PID:4028

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

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

            Filesize

            1.1MB

            MD5

            6e22deac33931cc1db88823351f6129d

            SHA1

            8c8027a2adff930c4a3d31cc4a33703222d79a7a

            SHA256

            49fa4406bbbe8a02abf7e818e4712b9cf450277259e6d9c3ee6572b9e8985a0b

            SHA512

            98b7289144c54b457996a2080a082994e04eb6d5d287a623d25d4bb61c34c6a30684ff20cbd42e9b704207e1ee89810ad0a01d6a2452be313cdb2996b98b67e9

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

            Filesize

            1.1MB

            MD5

            6e22deac33931cc1db88823351f6129d

            SHA1

            8c8027a2adff930c4a3d31cc4a33703222d79a7a

            SHA256

            49fa4406bbbe8a02abf7e818e4712b9cf450277259e6d9c3ee6572b9e8985a0b

            SHA512

            98b7289144c54b457996a2080a082994e04eb6d5d287a623d25d4bb61c34c6a30684ff20cbd42e9b704207e1ee89810ad0a01d6a2452be313cdb2996b98b67e9

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

            Filesize

            4KB

            MD5

            ce494d2d223aed950fea67f657d3fa3e

            SHA1

            97a19c02487c41e3a079cd6764afffeb5e838b26

            SHA256

            c8fa111c5b9537e3b6cab9ba763e164e27fa469f2232b82a54b206a7d892b9e9

            SHA512

            687bf3bd7de28dc45ea622672dc59d7e45d9ce83530a7db6462447ea247a9bde061738c454e09b48531aab9cce802c8491aa730e4da65e63daf31c65ffc39fe1

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

            Filesize

            2KB

            MD5

            a69559718ab506675e907fe49deb71e9

            SHA1

            bc8f404ffdb1960b50c12ff9413c893b56f2e36f

            SHA256

            2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

            SHA512

            e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

          • C:\Users\Admin\AppData\Local\Temp\is-VI77T.tmp\is-42ALL.tmp

            Filesize

            664KB

            MD5

            ce35b2dad10a0e6d5e016772efb75ad2

            SHA1

            ac38173e753c499655ba566493e3c3ff71878d92

            SHA256

            31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

            SHA512

            cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

          • C:\Users\Admin\AppData\Local\Temp\is-VI77T.tmp\is-42ALL.tmp

            Filesize

            664KB

            MD5

            ce35b2dad10a0e6d5e016772efb75ad2

            SHA1

            ac38173e753c499655ba566493e3c3ff71878d92

            SHA256

            31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

            SHA512

            cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

          • memory/1260-204-0x0000000000650000-0x0000000000651000-memory.dmp

            Filesize

            4KB

          • memory/1260-324-0x0000000000400000-0x00000000004B5000-memory.dmp

            Filesize

            724KB

          • memory/4028-323-0x0000000000400000-0x0000000001318000-memory.dmp

            Filesize

            15.1MB

          • memory/4864-133-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/4864-325-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB