Analysis

  • max time kernel
    90s
  • max time network
    117s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04-07-2023 20:45

General

  • Target

    file.exe

  • Size

    1.1MB

  • MD5

    ffa0037ecf6e87ab3187b0808981df34

  • SHA1

    f8bff52b7e7bb8ed5d047c48b285d9916436376a

  • SHA256

    d78bfbd6bccc7683d335742b20cdde322c12c3c248468f0298959f2e33eb5743

  • SHA512

    feb828014070978de477b12cbb5bc5b5d1f2ada1093c1df4e760096b0d0c2292b6369d37e91ed35f8ccc43ce0469bdb5bad8848a4cb81e0a52f585156681f274

  • SSDEEP

    24576:VfOy2ID2/h32P6a38xUCK9Kq4fZsQVRtCr92Is9pLrkxvtERtP/O1:VGjID2J5a38S9Kq4RswtM+pcER5/O1

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:4752
    • C:\Users\Admin\AppData\Local\Temp\is-IGTI6.tmp\is-T64UD.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-IGTI6.tmp\is-T64UD.tmp" /SL4 $B01C2 "C:\Users\Admin\AppData\Local\Temp\file.exe" 909422 59392
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:3748
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 4
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3136
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 4
          4⤵
            PID:1548
        • C:\Program Files (x86)\RelSpacer74\RelSpacer74.exe
          "C:\Program Files (x86)\RelSpacer74\RelSpacer74.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1468
          • C:\Users\Admin\AppData\Roaming\{c8f74260-19df-11ee-af62-806e6f6e6963}\Yb65lRyWhU.exe
            4⤵
            • Executes dropped EXE
            PID:4684
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c taskkill /im "RelSpacer74.exe" /f & erase "C:\Program Files (x86)\RelSpacer74\RelSpacer74.exe" & exit
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:1264
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /im "RelSpacer74.exe" /f
              5⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:1480

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\RelSpacer74\RelSpacer74.exe

      Filesize

      1.1MB

      MD5

      7eb679127f98af45342853e8127256b4

      SHA1

      759e0fa8dea7b58629c5bc31ae4763536ffaccc3

      SHA256

      172343777d6b34d362e7ba20887b685dd0096746b4ff04d4edc9a71180fa130f

      SHA512

      699bedbbe256dd26d4af8a6c953d5b24dc8aeb1bc8eff78a1af49a998872e143452dacf378a2ea048e8b7025b110f8f9a97c9d13e905fedad41c9f478f8c2280

    • C:\Program Files (x86)\RelSpacer74\RelSpacer74.exe

      Filesize

      1.1MB

      MD5

      7eb679127f98af45342853e8127256b4

      SHA1

      759e0fa8dea7b58629c5bc31ae4763536ffaccc3

      SHA256

      172343777d6b34d362e7ba20887b685dd0096746b4ff04d4edc9a71180fa130f

      SHA512

      699bedbbe256dd26d4af8a6c953d5b24dc8aeb1bc8eff78a1af49a998872e143452dacf378a2ea048e8b7025b110f8f9a97c9d13e905fedad41c9f478f8c2280

    • C:\Program Files (x86)\RelSpacer74\readme.txt

      Filesize

      4KB

      MD5

      ce494d2d223aed950fea67f657d3fa3e

      SHA1

      97a19c02487c41e3a079cd6764afffeb5e838b26

      SHA256

      c8fa111c5b9537e3b6cab9ba763e164e27fa469f2232b82a54b206a7d892b9e9

      SHA512

      687bf3bd7de28dc45ea622672dc59d7e45d9ce83530a7db6462447ea247a9bde061738c454e09b48531aab9cce802c8491aa730e4da65e63daf31c65ffc39fe1

    • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\42JDD8EA\dll[1].htm

      Filesize

      1B

      MD5

      cfcd208495d565ef66e7dff9f98764da

      SHA1

      b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

      SHA256

      5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

      SHA512

      31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

    • C:\Users\Admin\AppData\Local\Temp\is-B2Q8D.tmp\_isetup\_iscrypt.dll

      Filesize

      2KB

      MD5

      a69559718ab506675e907fe49deb71e9

      SHA1

      bc8f404ffdb1960b50c12ff9413c893b56f2e36f

      SHA256

      2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

      SHA512

      e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

    • C:\Users\Admin\AppData\Local\Temp\is-IGTI6.tmp\is-T64UD.tmp

      Filesize

      649KB

      MD5

      ab5dd892e1a9a07434450a0a334760df

      SHA1

      a0de3dce137a4199ab1baf7d576cf20b45cdb004

      SHA256

      3b58e81da4cd55481e442a74cb16b4249dc78364cc28e372524be77c1f282121

      SHA512

      91e0e244d2349384ea80f37fdb2d9ae94d8457b398709ac2f180fc0e645462068b4df86f747516b7b06ddcb5721f2e585c1514efa641ab004c485a59256d8bf9

    • C:\Users\Admin\AppData\Local\Temp\is-IGTI6.tmp\is-T64UD.tmp

      Filesize

      649KB

      MD5

      ab5dd892e1a9a07434450a0a334760df

      SHA1

      a0de3dce137a4199ab1baf7d576cf20b45cdb004

      SHA256

      3b58e81da4cd55481e442a74cb16b4249dc78364cc28e372524be77c1f282121

      SHA512

      91e0e244d2349384ea80f37fdb2d9ae94d8457b398709ac2f180fc0e645462068b4df86f747516b7b06ddcb5721f2e585c1514efa641ab004c485a59256d8bf9

    • C:\Users\Admin\AppData\Roaming\{c8f74260-19df-11ee-af62-806e6f6e6963}\Yb65lRyWhU.exe

      Filesize

      72KB

      MD5

      3fb36cb0b7172e5298d2992d42984d06

      SHA1

      439827777df4a337cbb9fa4a4640d0d3fa1738b7

      SHA256

      27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

      SHA512

      6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

    • C:\Users\Admin\AppData\Roaming\{c8f74260-19df-11ee-af62-806e6f6e6963}\Yb65lRyWhU.exe

      Filesize

      72KB

      MD5

      3fb36cb0b7172e5298d2992d42984d06

      SHA1

      439827777df4a337cbb9fa4a4640d0d3fa1738b7

      SHA256

      27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

      SHA512

      6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

    • memory/1468-323-0x0000000000400000-0x0000000001313000-memory.dmp

      Filesize

      15.1MB

    • memory/1468-324-0x0000000000400000-0x0000000001313000-memory.dmp

      Filesize

      15.1MB

    • memory/1468-332-0x0000000010000000-0x000000001001B000-memory.dmp

      Filesize

      108KB

    • memory/1468-339-0x0000000000400000-0x0000000001313000-memory.dmp

      Filesize

      15.1MB

    • memory/1468-355-0x0000000000400000-0x0000000001313000-memory.dmp

      Filesize

      15.1MB

    • memory/3748-338-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/3748-221-0x00000000005C0000-0x00000000005C1000-memory.dmp

      Filesize

      4KB

    • memory/3748-356-0x0000000000400000-0x00000000004B2000-memory.dmp

      Filesize

      712KB

    • memory/4752-133-0x0000000000400000-0x0000000000415000-memory.dmp

      Filesize

      84KB

    • memory/4752-337-0x0000000000400000-0x0000000000415000-memory.dmp

      Filesize

      84KB

    • memory/4752-357-0x0000000000400000-0x0000000000415000-memory.dmp

      Filesize

      84KB