Analysis

  • max time kernel
    58s
  • max time network
    60s
  • platform
    windows7_x64
  • resource
    win7-20230621-en
  • resource tags

    arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
  • submitted
    01/07/2023, 22:20

General

  • Target

    file.exe

  • Size

    1.2MB

  • MD5

    5bbb01b5f3d539b79bac02d4b4174143

  • SHA1

    7f401b44ac3dc3739f0a437b0d1c9e0fbcd7dba6

  • SHA256

    bb31c2cc4403265b94db99bb1e213fdc86f1c90c8ced3a31e463a2a735510ccf

  • SHA512

    834d31b7db82238efa232cfabdaa960527229e480ca37e06d55d169efa489dede59976ac99d2daea94bad38918940f15a612ad223e721c74f9579f8aa2e6e40e

  • SSDEEP

    24576:OfOy9B1xjqOP0HaGaMvmrHIvsXvCZNlhgz3f5F8EK1rARpJjBBp/D:OGgLxOCMukuvUZghS2pvBp

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:1200
    • C:\Users\Admin\AppData\Local\Temp\is-SHGFA.tmp\is-84OTN.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-SHGFA.tmp\is-84OTN.tmp" /SL4 $70126 "C:\Users\Admin\AppData\Local\Temp\file.exe" 971571 139776
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1132
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 1
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1788
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 1
          4⤵
            PID:292
        • C:\Program Files (x86)\ReiSpacer71\ReiSpacer71.exe
          "C:\Program Files (x86)\ReiSpacer71\ReiSpacer71.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:600
          • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\40Fyx9GXO.exe
            4⤵
            • Executes dropped EXE
            PID:1208
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c taskkill /im "ReiSpacer71.exe" /f & erase "C:\Program Files (x86)\ReiSpacer71\ReiSpacer71.exe" & exit
            4⤵
              PID:992
              • C:\Windows\SysWOW64\taskkill.exe
                taskkill /im "ReiSpacer71.exe" /f
                5⤵
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:1032

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            • C:\Program Files (x86)\ReiSpacer71\ReiSpacer71.exe

              Filesize

              1.1MB

              MD5

              b750b533ff4adb69b47754597617cf08

              SHA1

              eaea052724bf29097149ed66dbc245781dfe8693

              SHA256

              61932b6a34f3252b454dfe512aab52e1daefd1b7b00026c61149bf232f63fb3c

              SHA512

              cc482c78676de036d3d26f8c736d8072c5adca7e54fa15721e487adfafdb5efbb9b510614fab8d31d3dc7618d4d2261f07cea52be834bfb27183414feab01c4e

            • C:\Program Files (x86)\ReiSpacer71\readme.txt

              Filesize

              4KB

              MD5

              ce494d2d223aed950fea67f657d3fa3e

              SHA1

              97a19c02487c41e3a079cd6764afffeb5e838b26

              SHA256

              c8fa111c5b9537e3b6cab9ba763e164e27fa469f2232b82a54b206a7d892b9e9

              SHA512

              687bf3bd7de28dc45ea622672dc59d7e45d9ce83530a7db6462447ea247a9bde061738c454e09b48531aab9cce802c8491aa730e4da65e63daf31c65ffc39fe1

            • C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\C7A8D1KQ\dll[1].htm

              Filesize

              1B

              MD5

              cfcd208495d565ef66e7dff9f98764da

              SHA1

              b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

              SHA256

              5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

              SHA512

              31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

            • C:\Users\Admin\AppData\Local\Temp\is-SHGFA.tmp\is-84OTN.tmp

              Filesize

              729KB

              MD5

              68bf4df1230cb1bc58336ef6350c5a74

              SHA1

              b551c8c301b63db439a6316af0d7d577434043ba

              SHA256

              410221a48dc0d2cc667c8d68ee819039be2ac515abc5f1beea0da1d68ec742ff

              SHA512

              52e9d08592d5c26b68644d1694ed2295f6edfb47c5db599b4b88d148668fda590c7ca7c779f97f417aa07c3019b9ab5d901a52838ce67cc95f873c092a451b10

            • C:\Users\Admin\AppData\Local\Temp\is-SHGFA.tmp\is-84OTN.tmp

              Filesize

              729KB

              MD5

              68bf4df1230cb1bc58336ef6350c5a74

              SHA1

              b551c8c301b63db439a6316af0d7d577434043ba

              SHA256

              410221a48dc0d2cc667c8d68ee819039be2ac515abc5f1beea0da1d68ec742ff

              SHA512

              52e9d08592d5c26b68644d1694ed2295f6edfb47c5db599b4b88d148668fda590c7ca7c779f97f417aa07c3019b9ab5d901a52838ce67cc95f873c092a451b10

            • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\40Fyx9GXO.exe

              Filesize

              72KB

              MD5

              3fb36cb0b7172e5298d2992d42984d06

              SHA1

              439827777df4a337cbb9fa4a4640d0d3fa1738b7

              SHA256

              27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

              SHA512

              6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

            • \Program Files (x86)\ReiSpacer71\ReiSpacer71.exe

              Filesize

              1.1MB

              MD5

              b750b533ff4adb69b47754597617cf08

              SHA1

              eaea052724bf29097149ed66dbc245781dfe8693

              SHA256

              61932b6a34f3252b454dfe512aab52e1daefd1b7b00026c61149bf232f63fb3c

              SHA512

              cc482c78676de036d3d26f8c736d8072c5adca7e54fa15721e487adfafdb5efbb9b510614fab8d31d3dc7618d4d2261f07cea52be834bfb27183414feab01c4e

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

              Filesize

              2KB

              MD5

              a69559718ab506675e907fe49deb71e9

              SHA1

              bc8f404ffdb1960b50c12ff9413c893b56f2e36f

              SHA256

              2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

              SHA512

              e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

              Filesize

              22KB

              MD5

              92dc6ef532fbb4a5c3201469a5b5eb63

              SHA1

              3e89ff837147c16b4e41c30d6c796374e0b8e62c

              SHA256

              9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

              SHA512

              9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

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

              Filesize

              22KB

              MD5

              92dc6ef532fbb4a5c3201469a5b5eb63

              SHA1

              3e89ff837147c16b4e41c30d6c796374e0b8e62c

              SHA256

              9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

              SHA512

              9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

            • \Users\Admin\AppData\Local\Temp\is-SHGFA.tmp\is-84OTN.tmp

              Filesize

              729KB

              MD5

              68bf4df1230cb1bc58336ef6350c5a74

              SHA1

              b551c8c301b63db439a6316af0d7d577434043ba

              SHA256

              410221a48dc0d2cc667c8d68ee819039be2ac515abc5f1beea0da1d68ec742ff

              SHA512

              52e9d08592d5c26b68644d1694ed2295f6edfb47c5db599b4b88d148668fda590c7ca7c779f97f417aa07c3019b9ab5d901a52838ce67cc95f873c092a451b10

            • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\40Fyx9GXO.exe

              Filesize

              72KB

              MD5

              3fb36cb0b7172e5298d2992d42984d06

              SHA1

              439827777df4a337cbb9fa4a4640d0d3fa1738b7

              SHA256

              27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

              SHA512

              6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

            • memory/600-249-0x0000000000400000-0x0000000001312000-memory.dmp

              Filesize

              15.1MB

            • memory/600-250-0x0000000000400000-0x0000000001312000-memory.dmp

              Filesize

              15.1MB

            • memory/600-258-0x0000000000400000-0x0000000001312000-memory.dmp

              Filesize

              15.1MB

            • memory/600-262-0x0000000010000000-0x000000001001B000-memory.dmp

              Filesize

              108KB

            • memory/600-268-0x0000000000400000-0x0000000001312000-memory.dmp

              Filesize

              15.1MB

            • memory/600-288-0x0000000000400000-0x0000000001312000-memory.dmp

              Filesize

              15.1MB

            • memory/1132-252-0x0000000000400000-0x00000000004C6000-memory.dmp

              Filesize

              792KB

            • memory/1132-248-0x0000000003CF0000-0x0000000004C02000-memory.dmp

              Filesize

              15.1MB

            • memory/1132-241-0x0000000000240000-0x0000000000241000-memory.dmp

              Filesize

              4KB

            • memory/1132-289-0x0000000000400000-0x00000000004C6000-memory.dmp

              Filesize

              792KB

            • memory/1200-251-0x0000000000400000-0x0000000000428000-memory.dmp

              Filesize

              160KB

            • memory/1200-54-0x0000000000400000-0x0000000000428000-memory.dmp

              Filesize

              160KB

            • memory/1200-290-0x0000000000400000-0x0000000000428000-memory.dmp

              Filesize

              160KB