Analysis

  • max time kernel
    87s
  • max time network
    93s
  • 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, 01:25

General

  • Target

    file.exe

  • Size

    1.2MB

  • MD5

    f2c582462a4fba2085d1136a1970e802

  • SHA1

    3fd5d2222fcea1470b30cc2ba93b416ee384dae6

  • SHA256

    2c3797129f5d7a4e77af52d590e88187b073931a7a2b3d9bd51e588608880814

  • SHA512

    36ba022c296ed3494a03670e7cd46b168f0f540addca604ab71e845428e8d962b676dd2f85fb4ea76569ea91a16e3569f0c33518ba0cb00628b890fe5f1c1667

  • SSDEEP

    24576:OfOyK6ypZ3RT5J/K092mNKllYlesvIO+0QP1rARpJjBBp/D:OGt6iK0NNslUesQHd92pvBp

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:864
    • C:\Users\Admin\AppData\Local\Temp\is-ARG83.tmp\is-3QGLD.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-ARG83.tmp\is-3QGLD.tmp" /SL4 $C0042 "C:\Users\Admin\AppData\Local\Temp\file.exe" 989431 139776
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:4316
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 1
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1996
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 1
          4⤵
            PID:1380
        • C:\Program Files (x86)\ReiSpacer71\ReiSpacer71.exe
          "C:\Program Files (x86)\ReiSpacer71\ReiSpacer71.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2012
          • C:\Users\Admin\AppData\Roaming\{5c35b6da-1056-11ee-85b8-806e6f6e6963}\GKs0MJgGh46o.exe
            4⤵
            • Executes dropped EXE
            PID:3300
          • 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⤵
            • Suspicious use of WriteProcessMemory
            PID:4060
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /im "ReiSpacer71.exe" /f
              5⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:2156

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            Filesize

            1.1MB

            MD5

            c27ceacf26f8c92f58b351c1c35d4c19

            SHA1

            0ae847f095fe7fff22a367fda18af19c252a194c

            SHA256

            33dc8f0bb864efce31f5e01ea2437e69834cda6b1b819099352b759c1452c223

            SHA512

            6def1b6ff32676cded879624e1a0e8edd9868ff698a20753c11a782893e31e5246da23ac7613d5c6a15276dd1793fd0b8d74a870e08ffa61d65a37c10570bb40

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

            Filesize

            1.1MB

            MD5

            c27ceacf26f8c92f58b351c1c35d4c19

            SHA1

            0ae847f095fe7fff22a367fda18af19c252a194c

            SHA256

            33dc8f0bb864efce31f5e01ea2437e69834cda6b1b819099352b759c1452c223

            SHA512

            6def1b6ff32676cded879624e1a0e8edd9868ff698a20753c11a782893e31e5246da23ac7613d5c6a15276dd1793fd0b8d74a870e08ffa61d65a37c10570bb40

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

            Filesize

            4KB

            MD5

            ce494d2d223aed950fea67f657d3fa3e

            SHA1

            97a19c02487c41e3a079cd6764afffeb5e838b26

            SHA256

            c8fa111c5b9537e3b6cab9ba763e164e27fa469f2232b82a54b206a7d892b9e9

            SHA512

            687bf3bd7de28dc45ea622672dc59d7e45d9ce83530a7db6462447ea247a9bde061738c454e09b48531aab9cce802c8491aa730e4da65e63daf31c65ffc39fe1

          • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\2YMNL2J1\dll[1].htm

            Filesize

            1B

            MD5

            cfcd208495d565ef66e7dff9f98764da

            SHA1

            b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

            SHA256

            5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

            SHA512

            31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

          • C:\Users\Admin\AppData\Local\Temp\is-ARG83.tmp\is-3QGLD.tmp

            Filesize

            729KB

            MD5

            68bf4df1230cb1bc58336ef6350c5a74

            SHA1

            b551c8c301b63db439a6316af0d7d577434043ba

            SHA256

            410221a48dc0d2cc667c8d68ee819039be2ac515abc5f1beea0da1d68ec742ff

            SHA512

            52e9d08592d5c26b68644d1694ed2295f6edfb47c5db599b4b88d148668fda590c7ca7c779f97f417aa07c3019b9ab5d901a52838ce67cc95f873c092a451b10

          • C:\Users\Admin\AppData\Local\Temp\is-ARG83.tmp\is-3QGLD.tmp

            Filesize

            729KB

            MD5

            68bf4df1230cb1bc58336ef6350c5a74

            SHA1

            b551c8c301b63db439a6316af0d7d577434043ba

            SHA256

            410221a48dc0d2cc667c8d68ee819039be2ac515abc5f1beea0da1d68ec742ff

            SHA512

            52e9d08592d5c26b68644d1694ed2295f6edfb47c5db599b4b88d148668fda590c7ca7c779f97f417aa07c3019b9ab5d901a52838ce67cc95f873c092a451b10

          • C:\Users\Admin\AppData\Local\Temp\is-EQR1B.tmp\_isetup\_iscrypt.dll

            Filesize

            2KB

            MD5

            a69559718ab506675e907fe49deb71e9

            SHA1

            bc8f404ffdb1960b50c12ff9413c893b56f2e36f

            SHA256

            2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

            SHA512

            e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

          • C:\Users\Admin\AppData\Roaming\{5c35b6da-1056-11ee-85b8-806e6f6e6963}\GKs0MJgGh46o.exe

            Filesize

            72KB

            MD5

            3fb36cb0b7172e5298d2992d42984d06

            SHA1

            439827777df4a337cbb9fa4a4640d0d3fa1738b7

            SHA256

            27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

            SHA512

            6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

          • C:\Users\Admin\AppData\Roaming\{5c35b6da-1056-11ee-85b8-806e6f6e6963}\GKs0MJgGh46o.exe

            Filesize

            72KB

            MD5

            3fb36cb0b7172e5298d2992d42984d06

            SHA1

            439827777df4a337cbb9fa4a4640d0d3fa1738b7

            SHA256

            27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

            SHA512

            6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

          • memory/864-336-0x0000000000400000-0x0000000000428000-memory.dmp

            Filesize

            160KB

          • memory/864-356-0x0000000000400000-0x0000000000428000-memory.dmp

            Filesize

            160KB

          • memory/864-133-0x0000000000400000-0x0000000000428000-memory.dmp

            Filesize

            160KB

          • memory/2012-323-0x0000000000400000-0x0000000001312000-memory.dmp

            Filesize

            15.1MB

          • memory/2012-339-0x0000000000400000-0x0000000001312000-memory.dmp

            Filesize

            15.1MB

          • memory/2012-331-0x0000000010000000-0x000000001001B000-memory.dmp

            Filesize

            108KB

          • memory/2012-354-0x0000000000400000-0x0000000001312000-memory.dmp

            Filesize

            15.1MB

          • memory/4316-337-0x0000000000400000-0x00000000004C6000-memory.dmp

            Filesize

            792KB

          • memory/4316-355-0x0000000000400000-0x00000000004C6000-memory.dmp

            Filesize

            792KB

          • memory/4316-154-0x0000000002350000-0x0000000002351000-memory.dmp

            Filesize

            4KB