Analysis

  • max time kernel
    65s
  • max time network
    70s
  • platform
    windows7_x64
  • resource
    win7-20230705-en
  • resource tags

    arch:x64arch:x86image:win7-20230705-enlocale:en-usos:windows7-x64system
  • submitted
    11/07/2023, 01:16

General

  • Target
    file.exe
  • Size 1.2MB
  • Sample230711-bmsg3aea63
  • SHA256 bf04d3cd12ad8928037a50eb70b0bc789480c46eab2cf9eefe3f7eb8b6e2fd4a
  • MD5 SHA1 SHA512 SSDEEP

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:3012
    • C:\Users\Admin\AppData\Local\Temp\is-GV803.tmp\is-6C4QF.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-GV803.tmp\is-6C4QF.tmp" /SL4 $C0120 "C:\Users\Admin\AppData\Local\Temp\file.exe" 941861 117760
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:2004
      • C:\Windows\SysWOW64\net.exe
        "C:\Windows\system32\net.exe" helpmsg 10
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2424
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 helpmsg 10
          4⤵
            PID:2444
        • C:\Program Files (x86)\RerSpacer710\RerSpacer710.exe
          "C:\Program Files (x86)\RerSpacer710\RerSpacer710.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2904
          • C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\qiLVc5TS.exe
            4⤵
            • Executes dropped EXE
            PID:2148
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c taskkill /im "RerSpacer710.exe" /f & erase "C:\Program Files (x86)\RerSpacer710\RerSpacer710.exe" & exit
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:856
            • C:\Windows\SysWOW64\taskkill.exe
              taskkill /im "RerSpacer710.exe" /f
              5⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:2072

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          RerSpacer710.exe

          • Path C:\Program Files (x86)\RerSpacer710\RerSpacer710.exe
          • Size 1.1MB
          • SHA256 20cbffcb47960e624071adeee41ae1ca3a4acedbee769dc7d58d32f4b8d29d42
          • MD5 SHA1 SHA512 SSDEEP

          RerSpacer710.exe

          • Path C:\Program Files (x86)\RerSpacer710\RerSpacer710.exe
          • Size 1.1MB
          • SHA256 20cbffcb47960e624071adeee41ae1ca3a4acedbee769dc7d58d32f4b8d29d42
          • MD5 SHA1 SHA512 SSDEEP

          readme.txt

          • Path C:\Program Files (x86)\RerSpacer710\readme.txt
          • Size 4KB
          • SHA256 c8fa111c5b9537e3b6cab9ba763e164e27fa469f2232b82a54b206a7d892b9e9
          • MD5 SHA1 SHA512 SSDEEP

          dll[1].htm

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\ANFZKI5S\dll[1].htm
          • Size 1B
          • SHA256 5feceb66ffc86f38d952786c6d696c79c2dbc239dd4e91b46729d73a27fb57e9
          • MD5 SHA1 SHA512

          is-6C4QF.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-GV803.tmp\is-6C4QF.tmp
          • Size 712KB
          • SHA256 68fd47d30592128096c574b6281493b9b8e2ca3e412ab7545d0df50d246a3f3f
          • MD5 SHA1 SHA512 SSDEEP

          is-6C4QF.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\is-GV803.tmp\is-6C4QF.tmp
          • Size 712KB
          • SHA256 68fd47d30592128096c574b6281493b9b8e2ca3e412ab7545d0df50d246a3f3f
          • MD5 SHA1 SHA512 SSDEEP

          qiLVc5TS.exe

          • Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\qiLVc5TS.exe
          • Size 72KB
          • SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
          • MD5 SHA1 SHA512 SSDEEP

          RerSpacer710.exe

          • Path \Program Files (x86)\RerSpacer710\RerSpacer710.exe
          • Size 1.1MB
          • SHA256 20cbffcb47960e624071adeee41ae1ca3a4acedbee769dc7d58d32f4b8d29d42
          • MD5 SHA1 SHA512 SSDEEP

          is-6C4QF.tmp

          • Path \Users\Admin\AppData\Local\Temp\is-GV803.tmp\is-6C4QF.tmp
          • Size 712KB
          • SHA256 68fd47d30592128096c574b6281493b9b8e2ca3e412ab7545d0df50d246a3f3f
          • MD5 SHA1 SHA512 SSDEEP

          _iscrypt.dll

          • Path \Users\Admin\AppData\Local\Temp\is-KEB91.tmp\_isetup\_iscrypt.dll
          • Size 2KB
          • SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
          • MD5 SHA1 SHA512

          _shfoldr.dll

          • Path \Users\Admin\AppData\Local\Temp\is-KEB91.tmp\_isetup\_shfoldr.dll
          • Size 22KB
          • SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
          • MD5 SHA1 SHA512 SSDEEP

          _shfoldr.dll

          • Path \Users\Admin\AppData\Local\Temp\is-KEB91.tmp\_isetup\_shfoldr.dll
          • Size 22KB
          • SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
          • MD5 SHA1 SHA512 SSDEEP

          qiLVc5TS.exe

          • Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\qiLVc5TS.exe
          • Size 72KB
          • SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
          • MD5 SHA1 SHA512 SSDEEP

          memory/2004-251-0x0000000000400000-0x00000000004C1000-memory.dmp

          memory/2004-260-0x0000000003800000-0x0000000004715000-memory.dmp

          memory/2004-72-0x00000000001D0000-0x00000000001D1000-memory.dmp

          memory/2004-293-0x0000000000400000-0x00000000004C1000-memory.dmp

          memory/2004-248-0x0000000003800000-0x0000000004715000-memory.dmp

          memory/2904-249-0x0000000000400000-0x0000000001315000-memory.dmp

          memory/2904-261-0x0000000000400000-0x0000000001315000-memory.dmp

          memory/2904-262-0x0000000000400000-0x0000000001315000-memory.dmp

          memory/2904-266-0x0000000010000000-0x000000001001B000-memory.dmp

          memory/2904-273-0x0000000000400000-0x0000000001315000-memory.dmp

          memory/2904-292-0x0000000000400000-0x0000000001315000-memory.dmp

          memory/2904-252-0x0000000000400000-0x0000000001315000-memory.dmp

          memory/3012-54-0x0000000000400000-0x0000000000423000-memory.dmp

          memory/3012-250-0x0000000000400000-0x0000000000423000-memory.dmp

          memory/3012-294-0x0000000000400000-0x0000000000423000-memory.dmp