Overview

overview

10

Static

static

3

file.exe

windows7-x64

7

file.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    75s
  • max time network
    139s
  • 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, 04:11

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General

  • Target
    file.exe
  • Size 1.1MB
  • Sample230702-erxt5abg2w
  • SHA256 a43a7a8d46e524734b4fa9f36fd8b360e40cf314fc9c7775f4ffe651303f69c8
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
gcleanerdiscoveryloader

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.

    loadergcleaner
  • 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.

    discovery
  • 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
    evasion
  • 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:4952
    • C:\Users\Admin\AppData\Local\Temp\is-QEBOS.tmp\is-UCNU8.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-QEBOS.tmp\is-UCNU8.tmp" /SL4 $E0030 "C:\Users\Admin\AppData\Local\Temp\file.exe" 930166 73728
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1252
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 2
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:852
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 2
          4⤵
            PID:4720
        • C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe
          "C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe"
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:4116
          • C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\YSpPFFUP1.exe
            4⤵
            • Executes dropped EXE
            PID:5092
          • 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:824
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /im "RejSpacer72.exe" /f
              5⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:1588

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          RejSpacer72.exe
          • Path C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe
          • Size 1.1MB
          • SHA256 9d92ad3c0868140802616a5e20288025cb842b8c2b03ea4f6aa2bfdbccd3ae36
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          RejSpacer72.exe
          • Path C:\Program Files (x86)\RejSpacer72\RejSpacer72.exe
          • Size 1.1MB
          • SHA256 9d92ad3c0868140802616a5e20288025cb842b8c2b03ea4f6aa2bfdbccd3ae36
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          readme.txt
          • Path C:\Program Files (x86)\RejSpacer72\readme.txt
          • Size 4KB
          • SHA256 c8fa111c5b9537e3b6cab9ba763e164e27fa469f2232b82a54b206a7d892b9e9
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          dll[1].htm
          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\G63C5RNT\dll[1].htm
          • Size 1B
          • SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
          • MD5 SHA1 SHA512
          Submit Download

          _iscrypt.dll
          • Path C:\Users\Admin\AppData\Local\Temp\is-J08F2.tmp\_isetup\_iscrypt.dll
          • Size 2KB
          • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
          • MD5 SHA1 SHA512
          Submit Download

          is-UCNU8.tmp
          • Path C:\Users\Admin\AppData\Local\Temp\is-QEBOS.tmp\is-UCNU8.tmp
          • Size 664KB
          • SHA256 31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          is-UCNU8.tmp
          • Path C:\Users\Admin\AppData\Local\Temp\is-QEBOS.tmp\is-UCNU8.tmp
          • Size 664KB
          • SHA256 31f933169e44b127e3f0a80077a088ed208c2504773a084bfca4de2f53b839c6
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          YSpPFFUP1.exe
          • Path C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\YSpPFFUP1.exe
          • Size 72KB
          • SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          YSpPFFUP1.exe
          • Path C:\Users\Admin\AppData\Roaming\{f4724154-103f-11ee-9fa7-806e6f6e6963}\YSpPFFUP1.exe
          • Size 72KB
          • SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
          • MD5 SHA1 SHA512 SSDEEP
          Submit Download

          memory/1252-337-0x0000000000400000-0x00000000004B5000-memory.dmp
          Download

          memory/1252-148-0x0000000000630000-0x0000000000631000-memory.dmp
          Download

          memory/1252-355-0x0000000000400000-0x00000000004B5000-memory.dmp
          Download

          memory/4116-323-0x0000000000400000-0x0000000001318000-memory.dmp
          Download

          memory/4116-339-0x0000000000400000-0x0000000001318000-memory.dmp
          Download

          memory/4116-331-0x0000000010000000-0x000000001001B000-memory.dmp
          Download

          memory/4116-354-0x0000000000400000-0x0000000001318000-memory.dmp
          Download

          memory/4952-336-0x0000000000400000-0x0000000000418000-memory.dmp
          Download

          memory/4952-133-0x0000000000400000-0x0000000000418000-memory.dmp
          Download

          memory/4952-356-0x0000000000400000-0x0000000000418000-memory.dmp
          Download