Analysis

  • max time kernel
    59s
  • max time network
    60s
  • platform
    windows7_x64
  • resource
    win7-20230621-en
  • resource tags

    arch:x64arch:x86image:win7-20230621-enlocale:en-usos:windows7-x64system
  • submitted
    02/07/2023, 15:05

General

  • Target

    file.exe

  • Size

    1.1MB

  • MD5

    6efed94141baaad0bcd8849ba910c7fa

  • SHA1

    74544c7207a89f7aa386115147b2a119dd4baf3c

  • SHA256

    878089116b0342bf962ed58a5c51ab9dbe845d7f64843cbf0dea9a000baad892

  • SHA512

    40f8df85b5a3d3307f8118502955149a41a685b6932829745f277c223f15e9e89c3b7449840f8d793215f795821705c94a54833e8827b6bb5d18b8cbefc3a831

  • SSDEEP

    24576:JfOyI9dtFxGG7BJxocnK+rMsD1oQtZX77gRVqnWnNUWCMW6:JGnTxGEycnrM81ro3qnWvT

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 31 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:1168
    • C:\Users\Admin\AppData\Local\Temp\is-QDJ6B.tmp\is-GUM36.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-QDJ6B.tmp\is-GUM36.tmp" /SL4 $70122 "C:\Users\Admin\AppData\Local\Temp\file.exe" 910176 73728
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:2036
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1060
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 2
          4⤵
            PID:988
        • 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:568
          • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\SfrXkCTyjP1Y.exe
            4⤵
            • Executes dropped EXE
            PID:240
          • 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:1760
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /im "RejSpacer72.exe" /f
              5⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:876

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            1.1MB

            MD5

            2ee855ce79977570a331f0ba588516ad

            SHA1

            9538270627e47945a219fcb0c64a03f9bf36fabb

            SHA256

            22ef352200de76eeb830824a8a24bd3abf2778c454d202d43be81f9f090efba6

            SHA512

            27e6cc15219703aa89c5a401f623d7d2b51f7a190721dab18bec74fede3eccbbc6777d07578b92f0cb83c6fba679daa062ca0a99df2b9f4242fdf15dadb0d1ae

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

            Filesize

            1.1MB

            MD5

            2ee855ce79977570a331f0ba588516ad

            SHA1

            9538270627e47945a219fcb0c64a03f9bf36fabb

            SHA256

            22ef352200de76eeb830824a8a24bd3abf2778c454d202d43be81f9f090efba6

            SHA512

            27e6cc15219703aa89c5a401f623d7d2b51f7a190721dab18bec74fede3eccbbc6777d07578b92f0cb83c6fba679daa062ca0a99df2b9f4242fdf15dadb0d1ae

          • 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\M90WC9I6\dll[1].htm

            Filesize

            1B

            MD5

            cfcd208495d565ef66e7dff9f98764da

            SHA1

            b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

            SHA256

            5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

            SHA512

            31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

          • C:\Users\Admin\AppData\Local\Temp\is-QDJ6B.tmp\is-GUM36.tmp

            Filesize

            664KB

            MD5

            ce35b2dad10a0e6d5e016772efb75ad2

            SHA1

            ac38173e753c499655ba566493e3c3ff71878d92

            SHA256

            31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

            SHA512

            cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

          • C:\Users\Admin\AppData\Local\Temp\is-QDJ6B.tmp\is-GUM36.tmp

            Filesize

            664KB

            MD5

            ce35b2dad10a0e6d5e016772efb75ad2

            SHA1

            ac38173e753c499655ba566493e3c3ff71878d92

            SHA256

            31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

            SHA512

            cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

          • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\SfrXkCTyjP1Y.exe

            Filesize

            72KB

            MD5

            3fb36cb0b7172e5298d2992d42984d06

            SHA1

            439827777df4a337cbb9fa4a4640d0d3fa1738b7

            SHA256

            27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

            SHA512

            6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

            Filesize

            1.1MB

            MD5

            2ee855ce79977570a331f0ba588516ad

            SHA1

            9538270627e47945a219fcb0c64a03f9bf36fabb

            SHA256

            22ef352200de76eeb830824a8a24bd3abf2778c454d202d43be81f9f090efba6

            SHA512

            27e6cc15219703aa89c5a401f623d7d2b51f7a190721dab18bec74fede3eccbbc6777d07578b92f0cb83c6fba679daa062ca0a99df2b9f4242fdf15dadb0d1ae

          • \Users\Admin\AppData\Local\Temp\is-6LC9F.tmp\_isetup\_iscrypt.dll

            Filesize

            2KB

            MD5

            a69559718ab506675e907fe49deb71e9

            SHA1

            bc8f404ffdb1960b50c12ff9413c893b56f2e36f

            SHA256

            2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

            SHA512

            e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

          • \Users\Admin\AppData\Local\Temp\is-6LC9F.tmp\_isetup\_shfoldr.dll

            Filesize

            22KB

            MD5

            92dc6ef532fbb4a5c3201469a5b5eb63

            SHA1

            3e89ff837147c16b4e41c30d6c796374e0b8e62c

            SHA256

            9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

            SHA512

            9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

          • \Users\Admin\AppData\Local\Temp\is-6LC9F.tmp\_isetup\_shfoldr.dll

            Filesize

            22KB

            MD5

            92dc6ef532fbb4a5c3201469a5b5eb63

            SHA1

            3e89ff837147c16b4e41c30d6c796374e0b8e62c

            SHA256

            9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

            SHA512

            9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

          • \Users\Admin\AppData\Local\Temp\is-QDJ6B.tmp\is-GUM36.tmp

            Filesize

            664KB

            MD5

            ce35b2dad10a0e6d5e016772efb75ad2

            SHA1

            ac38173e753c499655ba566493e3c3ff71878d92

            SHA256

            31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6

            SHA512

            cdd97e8bbf568e9d6d6708bb427f3ce9d5433d320cd577e1e7bab1154c224efbb3960a24980ceec3e2bf471c72caf2309b13e7075c3216f6d43072d277a6642c

          • \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\SfrXkCTyjP1Y.exe

            Filesize

            72KB

            MD5

            3fb36cb0b7172e5298d2992d42984d06

            SHA1

            439827777df4a337cbb9fa4a4640d0d3fa1738b7

            SHA256

            27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

            SHA512

            6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

          • memory/568-249-0x0000000000400000-0x0000000001318000-memory.dmp

            Filesize

            15.1MB

          • memory/568-250-0x0000000000400000-0x0000000001318000-memory.dmp

            Filesize

            15.1MB

          • memory/568-258-0x0000000000400000-0x0000000001318000-memory.dmp

            Filesize

            15.1MB

          • memory/568-262-0x0000000010000000-0x000000001001B000-memory.dmp

            Filesize

            108KB

          • memory/568-268-0x0000000000400000-0x0000000001318000-memory.dmp

            Filesize

            15.1MB

          • memory/568-288-0x0000000000400000-0x0000000001318000-memory.dmp

            Filesize

            15.1MB

          • memory/1168-251-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/1168-54-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/1168-290-0x0000000000400000-0x0000000000418000-memory.dmp

            Filesize

            96KB

          • memory/2036-252-0x0000000000400000-0x00000000004B5000-memory.dmp

            Filesize

            724KB

          • memory/2036-248-0x0000000003BC0000-0x0000000004AD8000-memory.dmp

            Filesize

            15.1MB

          • memory/2036-289-0x0000000000400000-0x00000000004B5000-memory.dmp

            Filesize

            724KB

          • memory/2036-241-0x0000000000240000-0x0000000000241000-memory.dmp

            Filesize

            4KB