Analysis

  • max time kernel
    74s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    07/11/2024, 09:21

General

  • Target
    c40c95a9c16f2899d8975c8249f175f0d5db64f68ca70098ba23a32ff5dfdb60.exe
  • Size 4.2MB
  • Sample241107-lbnd3sslgm
  • SHA256 c40c95a9c16f2899d8975c8249f175f0d5db64f68ca70098ba23a32ff5dfdb60
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 5 IoCs
  • Modifies system executable filetype association 2 TTPs 8 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Drops file in Program Files directory 63 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c40c95a9c16f2899d8975c8249f175f0d5db64f68ca70098ba23a32ff5dfdb60.exe
    "C:\Users\Admin\AppData\Local\Temp\c40c95a9c16f2899d8975c8249f175f0d5db64f68ca70098ba23a32ff5dfdb60.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Windows\system32\cmd.exe
      cmd.exe /c set
      2⤵
        PID:2364
      • C:\Users\Admin\AppData\Local\Temp\c40c95a9c16f2899d8975c8249f175f0d5db64f68ca70098ba23a32ff5dfdb60.exe
        PECMD**pecmd-cmd* PUTF -dd -skipb=1034752 -len=3344959 "C:\Users\Admin\AppData\Local\Temp\~1673732836164737333.tmp",,C:\Users\Admin\AppData\Local\Temp\c40c95a9c16f2899d8975c8249f175f0d5db64f68ca70098ba23a32ff5dfdb60.exe
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        PID:2212
      • C:\Users\Admin\AppData\Local\Temp\~1421480831065519287~\sg.tmp
        7zG_exe x "C:\Users\Admin\AppData\Local\Temp\~1673732836164737333.tmp" -y -aoa -o"C:\Program Files\WinRAR"
        2⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • Suspicious use of AdjustPrivilegeToken
        PID:2004
      • C:\Program Files\WinRAR\Uninstall.exe
        "C:\Program Files\WinRAR\Uninstall.exe" /setup /s
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Modifies system executable filetype association
        • Drops file in Program Files directory
        • Modifies registry class
        PID:1316
      • C:\Windows\system32\cmd.exe
        cmd /c ""C:\Program Files\WinRAR\SetWinRAR.bat""
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3024
        • C:\Windows\System32\reg.exe
          Reg query "HKU\S-1-5-19\Environment"
          3⤵
            PID:2792
          • C:\Windows\System32\reg.exe
            Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "ExtrTo" /t REG_DWORD /d "1" /f
            3⤵
              PID:2560
            • C:\Windows\System32\reg.exe
              Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "ExtrHere" /t REG_DWORD /d "1" /f
              3⤵
                PID:980
              • C:\Windows\System32\reg.exe
                Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "Extr" /t REG_DWORD /d "1" /f
                3⤵
                  PID:1324
                • C:\Windows\System32\reg.exe
                  Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "ExtrSep" /t REG_DWORD /d "1" /f
                  3⤵
                    PID:2032
                  • C:\Windows\System32\reg.exe
                    Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "OpenSFX" /t REG_DWORD /d "1" /f
                    3⤵
                      PID:2600
                    • C:\Windows\System32\reg.exe
                      Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "AddTo" /t REG_DWORD /d "1" /f
                      3⤵
                        PID:1548
                      • C:\Windows\System32\reg.exe
                        Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "AddArc" /t REG_DWORD /d "0" /f
                        3⤵
                          PID:1340
                        • C:\Windows\System32\reg.exe
                          Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "EmailArc" /t REG_DWORD /d "0" /f
                          3⤵
                            PID:1396
                          • C:\Windows\System32\reg.exe
                            Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "EmailOpt" /t REG_DWORD /d "0" /f
                            3⤵
                              PID:2352
                            • C:\Windows\System32\reg.exe
                              Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "Test" /t REG_DWORD /d "0" /f
                              3⤵
                                PID:564
                              • C:\Windows\System32\reg.exe
                                Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "Convert" /t REG_SZ /d "" /f
                                3⤵
                                  PID:2196
                                • C:\Windows\System32\reg.exe
                                  Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "NewRAR" /t REG_DWORD /d "0" /f
                                  3⤵
                                    PID:2308
                                  • C:\Windows\System32\reg.exe
                                    Reg add "HKEY_CURRENT_USER\Software\WinRAR\Setup\MenuItems" /v "NewZIP" /t REG_DWORD /d "0" /f
                                    3⤵
                                      PID:2336
                                    • C:\Windows\System32\reg.exe
                                      Reg add "HKEY_CURRENT_USER\SOFTWARE\WinRAR\Setup" /v "ShellExt" /t REG_DWORD /d "1" /f
                                      3⤵
                                        PID:2384
                                      • C:\Windows\System32\reg.exe
                                        Reg add "HKEY_CURRENT_USER\SOFTWARE\WinRAR\Setup" /v "CascadedMenu" /t REG_DWORD /d "1" /f
                                        3⤵
                                          PID:1960
                                        • C:\Windows\System32\reg.exe
                                          Reg add "HKEY_CURRENT_USER\SOFTWARE\WinRAR\Setup" /v "MenuIcons" /t REG_DWORD /d "1" /f
                                          3⤵
                                            PID:1424
                                          • C:\Windows\System32\reg.exe
                                            Reg add "HKEY_CURRENT_USER\Software\WinRAR\General" /v "History" /t REG_DWORD /d "0" /f
                                            3⤵
                                              PID:2464
                                            • C:\Windows\System32\reg.exe
                                              Reg add "HKEY_CURRENT_USER\Software\WinRAR\General" /v "DlgHistory" /t REG_DWORD /d "0" /f
                                              3⤵
                                                PID:2452
                                              • C:\Windows\System32\reg.exe
                                                Reg query "HKU\S-1-5-19\Environment"
                                                3⤵
                                                  PID:1644

                                            Network

                                                  MITRE ATT&CK Enterprise v15

                                                  Replay Monitor

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                                                  Downloads

                                                  Rar.txt

                                                  • Path C:\Program Files\WinRAR\Rar.txt
                                                  • Size 73KB
                                                  • SHA256 b575226fb02e2ec0282c5fb3ac0a2ab6c99c2d21e5ad45f86e685bb2067b681d
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  SetWinRAR.bat

                                                  • Path C:\Program Files\WinRAR\SetWinRAR.bat
                                                  • Size 2KB
                                                  • SHA256 65a07da1dfcdf2e0a1122ee2573db7e1e16c4b91e0d9dc212d8f4781841a9d68
                                                  • MD5 SHA1 SHA512

                                                  WhatsNew.txt

                                                  • Path C:\Program Files\WinRAR\WhatsNew.txt
                                                  • Size 31KB
                                                  • SHA256 0ea4c8591aa480a4661a105fc6e3f3843ffa6f6b806caed19ee88cc05d87aa12
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  WinRAR.chm

                                                  • Path C:\Program Files\WinRAR\WinRAR.chm
                                                  • Size 574KB
                                                  • SHA256 415be033b4932638d8eb6a0070b1a79da5c1aa0f1fa282dab929e85d1f42f387
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  WinRAR.exe

                                                  • Path C:\Program Files\WinRAR\WinRAR.exe
                                                  • Size 3.1MB
                                                  • SHA256 cc46d8ec308738a45b7ee864367039d60e2b8ab7bf6627e5e6a716ce1d27fa7d
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  ~1673732836164737333.tmp

                                                  • Path C:\Users\Admin\AppData\Local\Temp\~1673732836164737333.tmp
                                                  • Size 3.2MB
                                                  • SHA256 c81bfc0c51683b64113b8df8d879e9b9257a3d9692e3c207c1f9c6835c915403
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  Uninstall.exe

                                                  • Path \Program Files\WinRAR\Uninstall.exe
                                                  • Size 474KB
                                                  • SHA256 fd960dd10f477371a939ea2de1d5ff813dd5832f989e7110a5dac1d928f049a7
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  sg.tmp

                                                  • Path \Users\Admin\AppData\Local\Temp\~1421480831065519287~\sg.tmp
                                                  • Size 715KB
                                                  • SHA256 4cc32d00338fc7b206a7c052297acf9ac304ae7de9d61a2475a116959c1524fc
                                                  • MD5 SHA1 SHA512 SSDEEP

                                                  memory/1736-0-0x0000000000400000-0x0000000000588000-memory.dmp

                                                  memory/1736-7-0x0000000002860000-0x00000000029E8000-memory.dmp

                                                  memory/1736-112-0x0000000000400000-0x0000000000588000-memory.dmp

                                                  memory/2212-10-0x0000000000400000-0x0000000000588000-memory.dmp