Analysis

  • max time kernel
    79s
  • max time network
    126s
  • 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, 16:58

General

  • Target

    file.exe

  • Size

    1.1MB

  • MD5

    8c9dc6785cb72f5fdfe4cade60a9f9c4

  • SHA1

    079772fa7021f1fdf08bd59dc1936036e8408c98

  • SHA256

    0e538582376de2930268f9c4d20d75924e446f14c4ff30ab486ef87c38316be4

  • SHA512

    60f56e6543fbe015aa3eb01597d2123cd93eb0ca78bd256090bed6ca846e6fdeed26f053f755e3cb4537d72c17e3d8efda55cf29b7800bc13128b603f58c6c77

  • SSDEEP

    24576:JfOyP2uR/IiE5afCbKOtN6jIMMIs2YsekT90bOunNUWCMW6:JGp065aKuOj6jIPIseevbOuvT

Malware Config

Extracted

Family

gcleaner

C2

45.12.253.56

45.12.253.72

45.12.253.98

45.12.253.75

Signatures

  • GCleaner

    GCleaner is a Pay-Per-Install malware loader first discovered in early 2019.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 3 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).

  • Kills process with taskkill 1 IoCs
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5024
    • C:\Users\Admin\AppData\Local\Temp\is-52JHP.tmp\is-H27UC.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-52JHP.tmp\is-H27UC.tmp" /SL4 $D01C2 "C:\Users\Admin\AppData\Local\Temp\file.exe" 894802 73728
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:4900
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4816
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 2
          4⤵
            PID:1040
        • C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe
          "C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2228
          • C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\FKGC2UEhuDsZD.exe
            4⤵
            • Executes dropped EXE
            PID:2784
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c taskkill /im "RejSpacer72.exe" /f & erase "C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe" & exit
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1156
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /im "RejSpacer72.exe" /f
              5⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:4224

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            1.1MB

            MD5

            abb2375e8bf3aa8c1e1c0310c125e839

            SHA1

            75490d4f057d96d7ab5d7d59d0b5d3e16bd7b929

            SHA256

            d099ee6471fd270589028dde97bdd9dcbd0c985c724628d8dc86d58f96206cae

            SHA512

            68c9375d8058b75620d46ea9d4331945d22adabbc6df4dd7ae55bf4364639ffed2925e300531527d058a4b9ef92ef03c2c9ccd3869119452f3751ed4d5351c0c

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

            Filesize

            1.1MB

            MD5

            abb2375e8bf3aa8c1e1c0310c125e839

            SHA1

            75490d4f057d96d7ab5d7d59d0b5d3e16bd7b929

            SHA256

            d099ee6471fd270589028dde97bdd9dcbd0c985c724628d8dc86d58f96206cae

            SHA512

            68c9375d8058b75620d46ea9d4331945d22adabbc6df4dd7ae55bf4364639ffed2925e300531527d058a4b9ef92ef03c2c9ccd3869119452f3751ed4d5351c0c

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

            Filesize

            4KB

            MD5

            ce494d2d223aed950fea67f657d3fa3e

            SHA1

            97a19c02487c41e3a079cd6764afffeb5e838b26

            SHA256

            c8fa111c5b9537e3b6cab9ba763e164e27fa469f2232b82a54b206a7d892b9e9

            SHA512

            687bf3bd7de28dc45ea622672dc59d7e45d9ce83530a7db6462447ea247a9bde061738c454e09b48531aab9cce802c8491aa730e4da65e63daf31c65ffc39fe1

          • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G63C5RNT\dll[1].htm

            Filesize

            1B

            MD5

            cfcd208495d565ef66e7dff9f98764da

            SHA1

            b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

            SHA256

            5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

            SHA512

            31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

          • C:\Users\Admin\AppData\Local\Temp\is-52JHP.tmp\is-H27UC.tmp

            Filesize

            664KB

            MD5

            ce35b2dad10a0e6d5e016772efb75ad2

            SHA1

            ac38173e753c499655ba566493e3c3ff71878d92

            SHA256

            31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

            SHA512

            cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

          • C:\Users\Admin\AppData\Local\Temp\is-52JHP.tmp\is-H27UC.tmp

            Filesize

            664KB

            MD5

            ce35b2dad10a0e6d5e016772efb75ad2

            SHA1

            ac38173e753c499655ba566493e3c3ff71878d92

            SHA256

            31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

            SHA512

            cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

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

            Filesize

            2KB

            MD5

            a69559718ab506675e907fe49deb71e9

            SHA1

            bc8f404ffdb1960b50c12ff9413c893b56f2e36f

            SHA256

            2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

            SHA512

            e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

          • C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\FKGC2UEhuDsZD.exe

            Filesize

            72KB

            MD5

            3fb36cb0b7172e5298d2992d42984d06

            SHA1

            439827777df4a337cbb9fa4a4640d0d3fa1738b7

            SHA256

            27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

            SHA512

            6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

          • C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\FKGC2UEhuDsZD.exe

            Filesize

            72KB

            MD5

            3fb36cb0b7172e5298d2992d42984d06

            SHA1

            439827777df4a337cbb9fa4a4640d0d3fa1738b7

            SHA256

            27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

            SHA512

            6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

          • memory/2228-323-0x0000000000400000-0x0000000001318000-memory.dmp

            Filesize

            15.1MB

          • memory/2228-324-0x0000000000400000-0x0000000001318000-memory.dmp

            Filesize

            15.1MB

          • memory/2228-332-0x0000000010000000-0x000000001001B000-memory.dmp

            Filesize

            108KB

          • memory/2228-339-0x0000000000400000-0x0000000001318000-memory.dmp

            Filesize

            15.1MB

          • memory/2228-355-0x0000000000400000-0x0000000001318000-memory.dmp

            Filesize

            15.1MB

          • memory/4900-338-0x0000000000400000-0x00000000004B5000-memory.dmp

            Filesize

            724KB

          • memory/4900-148-0x0000000002330000-0x0000000002331000-memory.dmp

            Filesize

            4KB

          • memory/4900-356-0x0000000000400000-0x00000000004B5000-memory.dmp

            Filesize

            724KB

          • memory/5024-133-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/5024-337-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/5024-357-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB