Analysis

  • max time kernel
    40s
  • max time network
    44s
  • 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, 05:31

General

  • Target

    RejSpacer72.exe

  • Size

    1.1MB

  • MD5

    bd481fbe21d690f2e15243f233fe1f92

  • SHA1

    afd3b8d8c9e75b748d759e7fa73d5a1470e08a13

  • SHA256

    cb6f91dc0ef15705a4449ece2ee7324c9e24a75dbf852651d095179dcaf2739b

  • SHA512

    8a4790612726cf81ea5b22bec9a18f29cf89c2afa8b8682ce53bcce54aaf112db3e3d219aa6d5996b1ef79269ec5946210c67eba4fc12932b993b90839dfbc41

  • SSDEEP

    24576:QhIpFgNyp/e06M4Vn5JL/OJoHG87aq9lWVJ:kwvN4V5J3J2

Score
10/10

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 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\RejSpacer72.exe
    "C:\Users\Admin\AppData\Local\Temp\RejSpacer72.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3560
    • C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\6QC5LufDLiAxuJ.exe
      2⤵
      • Executes dropped EXE
      PID:2248
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "RejSpacer72.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\RejSpacer72.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4780
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "RejSpacer72.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2644

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G63C5RNT\dll[1].htm

          Filesize

          1B

          MD5

          cfcd208495d565ef66e7dff9f98764da

          SHA1

          b6589fc6ab0dc82cf12099d1c2d40ab994e8410c

          SHA256

          5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9

          SHA512

          31bca02094eb78126a517b206a88c73cfa9ec6f704c7030d18212cace820f025f00bf0ea68dbf3f3a5436ca63b53bf7bf80ad8d5de7d8359d0b7fed9dbc3ab99

        • C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\6QC5LufDLiAxuJ.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\6QC5LufDLiAxuJ.exe

          Filesize

          72KB

          MD5

          3fb36cb0b7172e5298d2992d42984d06

          SHA1

          439827777df4a337cbb9fa4a4640d0d3fa1738b7

          SHA256

          27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

          SHA512

          6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

        • memory/3560-133-0x0000000000400000-0x0000000001318000-memory.dmp

          Filesize

          15.1MB

        • memory/3560-134-0x0000000000400000-0x0000000001318000-memory.dmp

          Filesize

          15.1MB

        • memory/3560-142-0x0000000010000000-0x000000001001B000-memory.dmp

          Filesize

          108KB

        • memory/3560-147-0x0000000000400000-0x0000000001318000-memory.dmp

          Filesize

          15.1MB

        • memory/3560-159-0x0000000000400000-0x0000000001318000-memory.dmp

          Filesize

          15.1MB