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Analysis

  • max time kernel
    37s
  • max time network
    42s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-04-2024 18:01

General

  • Target

    Ana.exe

  • Size

    2.1MB

  • MD5

    f571faca510bffe809c76c1828d44523

  • SHA1

    7a3ca1660f0a513316b8cd5496ac7dbe82f0e0c2

  • SHA256

    117d7af0deb40b3fe532bb6cbe374884fa55ed7cfe053fe698720cdccb5a59cb

  • SHA512

    a08bca2fb1387cc70b737520d566c7117aa3fdb9a52f5dbb0bb7be44630da7977882d8c808cbee843c8a180777b4ac5819e8bafda6b2c883e380dc7fb5358a51

  • SSDEEP

    49152:OwVYlfBUDiZx8Fa/Q0NuB3btlnCItWNSwoy:OxPUDQmso0NuBZlnCItM

Malware Config

Signatures

  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 7 IoCs
  • UPX packed file 13 IoCs

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

  • Checks installed software on the system 1 TTPs

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

    Bootkits write to the MBR to gain persistence at a level below the operating system.

  • Drops file in System32 directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Gathers network information 2 TTPs 1 IoCs

    Uses commandline utility to view network configuration.

  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ana.exe
    "C:\Users\Admin\AppData\Local\Temp\Ana.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:2356
    • C:\Users\Admin\AppData\Local\Temp\AV.EXE
      "C:\Users\Admin\AppData\Local\Temp\AV.EXE"
      2⤵
      • Executes dropped EXE
      PID:3132
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
        dw20.exe -x -s 948
        3⤵
          PID:1892
      • C:\Users\Admin\AppData\Local\Temp\AV2.EXE
        "C:\Users\Admin\AppData\Local\Temp\AV2.EXE"
        2⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3788
        • C:\cB17766LeBfF17766\cB17766LeBfF17766.exe
          "\cB17766LeBfF17766\cB17766LeBfF17766.exe" "C:\Users\Admin\AppData\Local\Temp\AV2.EXE"
          3⤵
          • Executes dropped EXE
          PID:1556
      • C:\Users\Admin\AppData\Local\Temp\DB.EXE
        "C:\Users\Admin\AppData\Local\Temp\DB.EXE"
        2⤵
        • Adds policy Run key to start application
        • Checks BIOS information in registry
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Drops file in System32 directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1832
        • C:\Windows\SysWOW64\themeuie.exe
          C:\Windows\SysWOW64\themeuie.exe
          3⤵
          • Drops file in Drivers directory
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1112
          • C:\Windows\SysWOW64\ipconfig.exe
            "C:\Windows\system32\ipconfig.exe" /flushdns
            4⤵
            • Gathers network information
            PID:2036
        • C:\Windows\SysWOW64\cmd.exe
          /c C:\Users\Admin\AppData\Local\Temp\~unins7046.bat "C:\Users\Admin\AppData\Local\Temp\DB.EXE"
          3⤵
            PID:2400
        • C:\Users\Admin\AppData\Local\Temp\EN.EXE
          "C:\Users\Admin\AppData\Local\Temp\EN.EXE"
          2⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:220
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\EN.EXE > nul
            3⤵
              PID:1908
          • C:\Users\Admin\AppData\Local\Temp\SB.EXE
            "C:\Users\Admin\AppData\Local\Temp\SB.EXE"
            2⤵
            • Executes dropped EXE
            • Writes to the Master Boot Record (MBR)
            • Suspicious use of AdjustPrivilegeToken
            PID:2928
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3788 -ip 3788
          1⤵
            PID:792

          Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Admin\AppData\Local\Temp\AV.EXE

            Filesize

            1.1MB

            MD5

            f284568010505119f479617a2e7dc189

            SHA1

            e23707625cce0035e3c1d2255af1ed326583a1ea

            SHA256

            26c8f13ea8dc17443a9fa005610537cb6700aebaf748e747e9278d504e416eb1

            SHA512

            ebe96e667dfde547c5a450b97cd7534b977f4073c7f4cbc123a0e00baaefeb3be725c1cafbfb5bb040b3359267954cd1b4e2094ef71fc273732016ee822064bf

          • C:\Users\Admin\AppData\Local\Temp\AV2.EXE

            Filesize

            368KB

            MD5

            014578edb7da99e5ba8dd84f5d26dfd5

            SHA1

            df56d701165a480e925a153856cbc3ab799c5a04

            SHA256

            4ce5e8b510895abb204f97e883d8cbaacc29ccef0844d9ae81f8666f234b0529

            SHA512

            bd5159af96d83fc7528956c5b1bd6f93847db18faa0680c6041f87bbebef5e3ba2de1f185d77ff28b8d7d78ec4f7bd54f48b37a16da39f43314ef022b4a36068

          • C:\Users\Admin\AppData\Local\Temp\DB.EXE

            Filesize

            243KB

            MD5

            c6746a62feafcb4fca301f606f7101fa

            SHA1

            e09cd1382f9ceec027083b40e35f5f3d184e485f

            SHA256

            b5a255d0454853c8afc0b321e1d86dca22c3dbefb88e5d385d2d72f9bc0109e6

            SHA512

            ee5dfa08c86bf1524666f0851c729970dbf0b397db9595a2bae01516299344edb68123e976592a83e492f2982fafe8d350ba2d41368eb4ecf4e6fe12af8f5642

          • C:\Users\Admin\AppData\Local\Temp\EN.EXE

            Filesize

            6KB

            MD5

            621f2279f69686e8547e476b642b6c46

            SHA1

            66f486cd566f86ab16015fe74f50d4515decce88

            SHA256

            c17a18cf2c243303b8a6688aad83b3e6e9b727fcd89f69065785ef7f1a2a3e38

            SHA512

            068402b02f1056b722f21b0a354b038f094d02e4a066b332553cd6b36e3640e8f35aa0499a2b057c566718c3593d3cea6bbabd961e04f0a001fd45d8be8e1c4e

          • C:\Users\Admin\AppData\Local\Temp\GB.EXE

            Filesize

            149KB

            MD5

            fe731b4c6684d643eb5b55613ef9ed31

            SHA1

            cfafe2a14f5413278304920154eb467f7c103c80

            SHA256

            e7953daad7a68f8634ded31a21a31f0c2aa394ca9232e2f980321f7b69176496

            SHA512

            f7756d69138df6d3b0ffa47bdf274e5fd8aab4fff9d68abe403728c8497ac58e0f3d28d41710de715f57b7a2b5daa2dd7e04450f19c6d013a08f543bd6fc9c2e

          • C:\Users\Admin\AppData\Local\Temp\SB.EXE

            Filesize

            224KB

            MD5

            9252e1be9776af202d6ad5c093637022

            SHA1

            6cc686d837cd633d9c2e8bc1eaba5fc364bf71d8

            SHA256

            ce822ff86e584f15b6abd14c61453bd3b481d4ec3fdeb961787fceb52acd8bd6

            SHA512

            98b1b3ce4d16d36f738478c6cf41e8f4a57d3a5ecfa8999d45592f79a469d8af8554bf4d5db34cb79cec71ce103f4fde1b41bd3cce30714f803e432e53da71ea

          • C:\Users\Admin\AppData\Local\Temp\tsa.crt

            Filesize

            1010B

            MD5

            6e630504be525e953debd0ce831b9aa0

            SHA1

            edfa47b3edf98af94954b5b0850286a324608503

            SHA256

            2563fe2f793f119a1bae5cca6eab9d8c20409aa1f1e0db341c623e1251244ef5

            SHA512

            bbcf285309a4d5605e19513c77ef077a4c451cbef04e3cbdfec6d15cc157a9800a7ff6f70964b0452ddb939ff50766e887904eda06a9999fdedf5b2e8776ebd2

          • C:\Users\Admin\AppData\Local\Temp\~unins7046.bat

            Filesize

            49B

            MD5

            9e0a2f5ab30517809b95a1ff1dd98c53

            SHA1

            5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce

            SHA256

            97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32

            SHA512

            e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42

          • C:\Windows\SysWOW64\themeuie.exe

            Filesize

            101KB

            MD5

            415c7e7096e9148f2cf263fbb1044a43

            SHA1

            563550cbfb40231906780d719653cea6834c1ceb

            SHA256

            25b2281fc42d6d572bf3737708ffbf7638c35455a8b21b3c5b0dda23ce667760

            SHA512

            940a754c35fab2a18ca1f4d0d6497d2bb241289d10ecb03b48c1074d55cf1f44e7497639323ebaaba7b8dbd4740f78143f91ed5492b777e41379aa13df465a6a

          • C:\cB17766LeBfF17766\cB17766LeBfF17766.exe

            Filesize

            368KB

            MD5

            06c788f240b22bd617a3ef8bf082566d

            SHA1

            62e62ff73f2b83258ecfb7d7c2841d674894cd4e

            SHA256

            b0c750ea8630e7a54e93ff364371d38ff030630c5458ca9600863f82816af0e6

            SHA512

            0a96f50b05d8acd9391bbc5c28f4050714cb68c5ca54c9b7adab9dae4f883b4099b4a513771e619da3afd25f65f351598bb722af2f536c097caa794ef1e4b982

          • memory/220-41-0x0000000000400000-0x000000000040A000-memory.dmp

            Filesize

            40KB

          • memory/220-75-0x0000000000400000-0x000000000040A000-memory.dmp

            Filesize

            40KB

          • memory/1832-74-0x0000000000400000-0x0000000000445000-memory.dmp

            Filesize

            276KB

          • memory/1832-61-0x00000000006A0000-0x0000000000733000-memory.dmp

            Filesize

            588KB

          • memory/1832-33-0x0000000000400000-0x0000000000445000-memory.dmp

            Filesize

            276KB

          • memory/1832-34-0x00000000001C0000-0x00000000001F1000-memory.dmp

            Filesize

            196KB

          • memory/1832-56-0x00000000006A0000-0x0000000000733000-memory.dmp

            Filesize

            588KB

          • memory/1832-157-0x00000000006A0000-0x0000000000733000-memory.dmp

            Filesize

            588KB

          • memory/1832-59-0x00000000006A0000-0x0000000000733000-memory.dmp

            Filesize

            588KB

          • memory/1832-70-0x00000000008B0000-0x00000000008B1000-memory.dmp

            Filesize

            4KB

          • memory/1832-69-0x00000000006A0000-0x0000000000733000-memory.dmp

            Filesize

            588KB

          • memory/2928-68-0x00000000008EB000-0x00000000008EC000-memory.dmp

            Filesize

            4KB

          • memory/2928-63-0x0000000000400000-0x0000000000464000-memory.dmp

            Filesize

            400KB

          • memory/2928-67-0x00000000008E0000-0x0000000000944000-memory.dmp

            Filesize

            400KB

          • memory/2928-62-0x0000000000400000-0x0000000000464000-memory.dmp

            Filesize

            400KB

          • memory/2928-71-0x0000000000400000-0x0000000000464000-memory.dmp

            Filesize

            400KB

          • memory/3132-66-0x0000000073A00000-0x0000000073FB1000-memory.dmp

            Filesize

            5.7MB

          • memory/3132-164-0x0000000073A00000-0x0000000073FB1000-memory.dmp

            Filesize

            5.7MB

          • memory/3132-64-0x0000000073A00000-0x0000000073FB1000-memory.dmp

            Filesize

            5.7MB

          • memory/3132-65-0x00000000018E0000-0x00000000018F0000-memory.dmp

            Filesize

            64KB

          • memory/3132-187-0x00000000018E0000-0x00000000018F0000-memory.dmp

            Filesize

            64KB

          • memory/3788-77-0x0000000000400000-0x00000000004C3000-memory.dmp

            Filesize

            780KB

          • memory/3788-78-0x0000000000630000-0x0000000000631000-memory.dmp

            Filesize

            4KB

          • memory/3788-72-0x0000000000620000-0x0000000000623000-memory.dmp

            Filesize

            12KB

          • memory/3788-73-0x0000000000400000-0x00000000004C3000-memory.dmp

            Filesize

            780KB