Analysis

  • max time kernel
    58s
  • max time network
    59s
  • platform
    windows7_x64
  • resource
    win7-20230621-en
  • resource tags

    arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-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

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.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 6 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1720
    • C:\Users\Admin\AppData\Local\Temp\is-9QHAB.tmp\is-C0NI5.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-9QHAB.tmp\is-C0NI5.tmp" /SL4 $A0122 "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:1092
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1156
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 2
          4⤵
            PID:800
        • C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe
          "C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1512
          • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\diXKsc.exe
            4⤵
            • Executes dropped EXE
            PID:1664
          • 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⤵
              PID:1856
              • C:\Windows\SysWOW64\taskkill.exe
                taskkill /im "RejSpacer72.exe" /f
                5⤵
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:1612

      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\readme.txt

              Filesize

              4KB

              MD5

              ce494d2d223aed950fea67f657d3fa3e

              SHA1

              97a19c02487c41e3a079cd6764afffeb5e838b26

              SHA256

              c8fa111c5b9537e3b6cab9ba763e164e27fa469f2232b82a54b206a7d892b9e9

              SHA512

              687bf3bd7de28dc45ea622672dc59d7e45d9ce83530a7db6462447ea247a9bde061738c454e09b48531aab9cce802c8491aa730e4da65e63daf31c65ffc39fe1

            • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\7DZDVCQ4\dll[1].htm

              Filesize

              1B

              MD5

              cfcd208495d565ef66e7dff9f98764da

              SHA1

              b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

              SHA256

              5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

              SHA512

              31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

            • C:\Users\Admin\AppData\Local\Temp\is-9QHAB.tmp\is-C0NI5.tmp

              Filesize

              664KB

              MD5

              ce35b2dad10a0e6d5e016772efb75ad2

              SHA1

              ac38173e753c499655ba566493e3c3ff71878d92

              SHA256

              31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

              SHA512

              cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

            • C:\Users\Admin\AppData\Local\Temp\is-9QHAB.tmp\is-C0NI5.tmp

              Filesize

              664KB

              MD5

              ce35b2dad10a0e6d5e016772efb75ad2

              SHA1

              ac38173e753c499655ba566493e3c3ff71878d92

              SHA256

              31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

              SHA512

              cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

            • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\diXKsc.exe

              Filesize

              72KB

              MD5

              3fb36cb0b7172e5298d2992d42984d06

              SHA1

              439827777df4a337cbb9fa4a4640d0d3fa1738b7

              SHA256

              27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

              SHA512

              6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

              Filesize

              1.1MB

              MD5

              6e22deac33931cc1db88823351f6129d

              SHA1

              8c8027a2adff930c4a3d31cc4a33703222d79a7a

              SHA256

              49fa4406bbbe8a02abf7e818e4712b9cf450277259e6d9c3ee6572b9e8985a0b

              SHA512

              98b7289144c54b457996a2080a082994e04eb6d5d287a623d25d4bb61c34c6a30684ff20cbd42e9b704207e1ee89810ad0a01d6a2452be313cdb2996b98b67e9

            • \Users\Admin\AppData\Local\Temp\is-9QHAB.tmp\is-C0NI5.tmp

              Filesize

              664KB

              MD5

              ce35b2dad10a0e6d5e016772efb75ad2

              SHA1

              ac38173e753c499655ba566493e3c3ff71878d92

              SHA256

              31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

              SHA512

              cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

            • \Users\Admin\AppData\Local\Temp\is-QUNEM.tmp\_isetup\_iscrypt.dll

              Filesize

              2KB

              MD5

              a69559718ab506675e907fe49deb71e9

              SHA1

              bc8f404ffdb1960b50c12ff9413c893b56f2e36f

              SHA256

              2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

              SHA512

              e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

            • \Users\Admin\AppData\Local\Temp\is-QUNEM.tmp\_isetup\_shfoldr.dll

              Filesize

              22KB

              MD5

              92dc6ef532fbb4a5c3201469a5b5eb63

              SHA1

              3e89ff837147c16b4e41c30d6c796374e0b8e62c

              SHA256

              9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

              SHA512

              9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

            • \Users\Admin\AppData\Local\Temp\is-QUNEM.tmp\_isetup\_shfoldr.dll

              Filesize

              22KB

              MD5

              92dc6ef532fbb4a5c3201469a5b5eb63

              SHA1

              3e89ff837147c16b4e41c30d6c796374e0b8e62c

              SHA256

              9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

              SHA512

              9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

            • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\diXKsc.exe

              Filesize

              72KB

              MD5

              3fb36cb0b7172e5298d2992d42984d06

              SHA1

              439827777df4a337cbb9fa4a4640d0d3fa1738b7

              SHA256

              27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

              SHA512

              6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

            • memory/1092-248-0x0000000003970000-0x0000000004888000-memory.dmp

              Filesize

              15.1MB

            • memory/1092-290-0x0000000000400000-0x00000000004B5000-memory.dmp

              Filesize

              724KB

            • memory/1092-206-0x0000000000240000-0x0000000000241000-memory.dmp

              Filesize

              4KB

            • memory/1092-257-0x0000000000400000-0x00000000004B5000-memory.dmp

              Filesize

              724KB

            • memory/1512-249-0x0000000000400000-0x0000000001318000-memory.dmp

              Filesize

              15.1MB

            • memory/1512-258-0x0000000000400000-0x0000000001318000-memory.dmp

              Filesize

              15.1MB

            • memory/1512-262-0x0000000010000000-0x000000001001B000-memory.dmp

              Filesize

              108KB

            • memory/1512-265-0x0000000000400000-0x0000000001318000-memory.dmp

              Filesize

              15.1MB

            • memory/1512-269-0x0000000000400000-0x0000000001318000-memory.dmp

              Filesize

              15.1MB

            • memory/1512-250-0x0000000000400000-0x0000000001318000-memory.dmp

              Filesize

              15.1MB

            • memory/1512-289-0x0000000000400000-0x0000000001318000-memory.dmp

              Filesize

              15.1MB

            • memory/1720-256-0x0000000000400000-0x0000000000418000-memory.dmp

              Filesize

              96KB

            • memory/1720-54-0x0000000000400000-0x0000000000418000-memory.dmp

              Filesize

              96KB

            • memory/1720-291-0x0000000000400000-0x0000000000418000-memory.dmp

              Filesize

              96KB