Analysis

  • max time kernel
    221s
  • max time network
    221s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/10/2022, 14:47

General

  • Target
    Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)/App/ProcessLasso/QuickUpgrade.exe
  • Size 417KB
  • Sample221014-r5vm5sdfe7
  • SHA256 065a173c0b589faf2189310a5aea41350209c21e70082994880ccc8542e0fc37
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 6 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 18 IoCs
  • Suspicious use of FindShellTrayWindow 37 IoCs
  • Suspicious use of SendNotifyMessage 37 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\QuickUpgrade.exe
    "C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\QuickUpgrade.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:3928
    • C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\bitsumms.exe
      "C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\bitsumms.exe" /name:ProcessGovernor /stop
      2⤵
        PID:2604
      • C:\Users\Admin\AppData\Local\Temp\bitsum\processlasso\pl4sfx.exe
        "C:\Users\Admin\AppData\Local\Temp\bitsum\processlasso\pl4sfx.exe"
        2⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:4104
        • C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\PostUpdate.exe
          "C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\PostUpdate.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks processor information in registry
          • Suspicious use of WriteProcessMemory
          PID:1120
          • C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\processlasso.exe
            /postupdate
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Checks processor information in registry
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            • Suspicious use of WriteProcessMemory
            PID:1528
            • C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\processgovernor.exe
              "C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\processgovernor.exe"
              5⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Checks processor information in registry
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:3144
    • C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\bitsumsessionagent.exe
      "C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\bitsumsessionagent.exe" ----------------------------------------------------------------
      1⤵
      • Executes dropped EXE
      PID:2276
    • C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\bitsumsessionagent.exe
      "C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\bitsumsessionagent.exe" ----------------------------------------------------------------
      1⤵
      • Executes dropped EXE
      PID:2148

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          prolasso.ini

          • Path C:\Users\Admin\AppData\Local\ProcessLasso\config\prolasso.ini
          • Size 7KB
          • SHA256 cc92b1ffc62962e1e8267a47df08f5817df148be90a20e984e87ccabf67b2ca9
          • MD5 SHA1 SHA512 SSDEEP

          prolasso.ini

          • Path C:\Users\Admin\AppData\Local\ProcessLasso\config\prolasso.ini
          • Size 7KB
          • SHA256 cc92b1ffc62962e1e8267a47df08f5817df148be90a20e984e87ccabf67b2ca9
          • MD5 SHA1 SHA512 SSDEEP

          processlasso.log

          • Path C:\Users\Admin\AppData\Local\ProcessLasso\logs\processlasso.log
          • Size 1KB
          • SHA256 03098a60e8415bdbacb079be3e9ce4cc73de20697162bee681056e849d3172ab
          • MD5 SHA1 SHA512

          PostUpdate.exe

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\PostUpdate.exe
          • Size 614KB
          • SHA256 f02d52565f06f592104062b0b9e8e86978709a1404a427546331e4bc108175a1
          • MD5 SHA1 SHA512 SSDEEP

          PostUpdate.exe

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\PostUpdate.exe
          • Size 614KB
          • SHA256 f02d52565f06f592104062b0b9e8e86978709a1404a427546331e4bc108175a1
          • MD5 SHA1 SHA512 SSDEEP

          ProcessGovernor.exe

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\ProcessGovernor.exe
          • Size 1.1MB
          • SHA256 a292bdf7caaaec6ba91380fb3b6b27d7a9e110b827159dabd4d9d431f652d228
          • MD5 SHA1 SHA512 SSDEEP

          ProcessLasso.exe

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\ProcessLasso.exe
          • Size 1.5MB
          • SHA256 eb36e1727bc767f3981abb103d7e0b0237e02f2ebaab18eff4858f29337b430f
          • MD5 SHA1 SHA512 SSDEEP

          QuickUpgrade.exe.Replacement

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\QuickUpgrade.exe.Replacement
          • Size 417KB
          • SHA256 065a173c0b589faf2189310a5aea41350209c21e70082994880ccc8542e0fc37
          • MD5 SHA1 SHA512 SSDEEP

          bitsumsessionagent.exe

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\bitsumsessionagent.exe
          • Size 142KB
          • SHA256 d0e08bd4148e71c6baf63c64fdddc30372f2c7c5f5e50b71c6b868a3df865165
          • MD5 SHA1 SHA512 SSDEEP

          bitsumsessionagent.exe

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\bitsumsessionagent.exe
          • Size 142KB
          • SHA256 d0e08bd4148e71c6baf63c64fdddc30372f2c7c5f5e50b71c6b868a3df865165
          • MD5 SHA1 SHA512 SSDEEP

          bitsumsessionagent.exe

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\bitsumsessionagent.exe
          • Size 142KB
          • SHA256 d0e08bd4148e71c6baf63c64fdddc30372f2c7c5f5e50b71c6b868a3df865165
          • MD5 SHA1 SHA512 SSDEEP

          pl_rsrc_english.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\pl_rsrc_english.dll
          • Size 1.9MB
          • SHA256 3d1d3c2754d05573e81247c62a29c01bdadc72d7da2a665d823c93d752a727e2
          • MD5 SHA1 SHA512 SSDEEP

          pl_rsrc_english.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\pl_rsrc_english.dll
          • Size 1.9MB
          • SHA256 3d1d3c2754d05573e81247c62a29c01bdadc72d7da2a665d823c93d752a727e2
          • MD5 SHA1 SHA512 SSDEEP

          pl_rsrc_english.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\pl_rsrc_english.dll
          • Size 1.9MB
          • SHA256 3d1d3c2754d05573e81247c62a29c01bdadc72d7da2a665d823c93d752a727e2
          • MD5 SHA1 SHA512 SSDEEP

          pl_rsrc_english.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\pl_rsrc_english.dll
          • Size 1.9MB
          • SHA256 3d1d3c2754d05573e81247c62a29c01bdadc72d7da2a665d823c93d752a727e2
          • MD5 SHA1 SHA512 SSDEEP

          pl_rsrc_english.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\pl_rsrc_english.dll
          • Size 1.9MB
          • SHA256 3d1d3c2754d05573e81247c62a29c01bdadc72d7da2a665d823c93d752a727e2
          • MD5 SHA1 SHA512 SSDEEP

          pl_rsrc_english.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\pl_rsrc_english.dll
          • Size 1.9MB
          • SHA256 3d1d3c2754d05573e81247c62a29c01bdadc72d7da2a665d823c93d752a727e2
          • MD5 SHA1 SHA512 SSDEEP

          pl_rsrc_english.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\pl_rsrc_english.dll
          • Size 1.9MB
          • SHA256 3d1d3c2754d05573e81247c62a29c01bdadc72d7da2a665d823c93d752a727e2
          • MD5 SHA1 SHA512 SSDEEP

          pl_rsrc_temp.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\pl_rsrc_temp.dll
          • Size 1.9MB
          • SHA256 3d1d3c2754d05573e81247c62a29c01bdadc72d7da2a665d823c93d752a727e2
          • MD5 SHA1 SHA512 SSDEEP

          pl_rsrc_temp.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\pl_rsrc_temp.dll
          • Size 1.9MB
          • SHA256 3d1d3c2754d05573e81247c62a29c01bdadc72d7da2a665d823c93d752a727e2
          • MD5 SHA1 SHA512 SSDEEP

          processgovernor.exe

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\processgovernor.exe
          • Size 1.1MB
          • SHA256 a292bdf7caaaec6ba91380fb3b6b27d7a9e110b827159dabd4d9d431f652d228
          • MD5 SHA1 SHA512 SSDEEP

          processlasso.exe

          • Path C:\Users\Admin\AppData\Local\Temp\Process Lasso 11.1.1.26 #soft8 病毒 0 (111.10.14)\App\ProcessLasso\processlasso.exe
          • Size 1.5MB
          • SHA256 eb36e1727bc767f3981abb103d7e0b0237e02f2ebaab18eff4858f29337b430f
          • MD5 SHA1 SHA512 SSDEEP

          pl4sfx.exe

          • Path C:\Users\Admin\AppData\Local\Temp\bitsum\processlasso\pl4sfx.exe
          • Size 2.6MB
          • SHA256 cad4bf4a6a75ba693cb10ccc4c514fbaa737abd02bc429082dc4bd0beaa974b8
          • MD5 SHA1 SHA512 SSDEEP

          pl4sfx.exe

          • Path C:\Users\Admin\AppData\Local\Temp\bitsum\processlasso\pl4sfx.exe
          • Size 2.6MB
          • SHA256 cad4bf4a6a75ba693cb10ccc4c514fbaa737abd02bc429082dc4bd0beaa974b8
          • MD5 SHA1 SHA512 SSDEEP