Analysis

  • max time kernel
    138s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    28-05-2022 00:35

General

  • Target

    036723e4550722c8de53bdfa8bbdaa958847a3314a6c7e67dee0d9ce3cdb1e14.exe

  • Size

    632KB

  • MD5

    78343be8af684059bcc1fdabdbb56f33

  • SHA1

    ab284edb033d870e201441c3efa1d23233b0232e

  • SHA256

    036723e4550722c8de53bdfa8bbdaa958847a3314a6c7e67dee0d9ce3cdb1e14

  • SHA512

    ad4bcc4d077711a478576f1cee9c4733189a0f3d9eb781ed577c826f1ad1d7ed7f0df0ba4cbc6cde50a4f6a3e64c17255aaf330d55df763c5017de6e75c4cf63

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

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

  • Installs/modifies Browser Helper Object 2 TTPs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 22 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 36 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\036723e4550722c8de53bdfa8bbdaa958847a3314a6c7e67dee0d9ce3cdb1e14.exe
    "C:\Users\Admin\AppData\Local\Temp\036723e4550722c8de53bdfa8bbdaa958847a3314a6c7e67dee0d9ce3cdb1e14.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1996
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha3194\ie\MediaViewV1alpha3194.dll" /s
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:2308
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:3696
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:1304
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
        1⤵
          PID:4756

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha3194\ie\MediaViewV1alpha3194.dll
          Filesize

          85KB

          MD5

          849e3f01120a9ccfea344afa9b620124

          SHA1

          25440041de2eabe4c3539e21dda39c1ba51d6e1e

          SHA256

          13d85093478cb50c711b9e37adcd926eff65b6f60d4fb6db4623e3d0d9986736

          SHA512

          d826a00f8ab9a810bfa686cebbd6879ea92a87e9b00cf3d44d7258f6cff25e46afbc87aefce902bb0f1ff19274558bdc2b1948bae5717daa15a33aba83a30cab

        • C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha3194\ie\MediaViewV1alpha3194.dll
          Filesize

          85KB

          MD5

          849e3f01120a9ccfea344afa9b620124

          SHA1

          25440041de2eabe4c3539e21dda39c1ba51d6e1e

          SHA256

          13d85093478cb50c711b9e37adcd926eff65b6f60d4fb6db4623e3d0d9986736

          SHA512

          d826a00f8ab9a810bfa686cebbd6879ea92a87e9b00cf3d44d7258f6cff25e46afbc87aefce902bb0f1ff19274558bdc2b1948bae5717daa15a33aba83a30cab

        • C:\Users\Admin\AppData\Local\Temp\nslE341.tmp\aminsis.dll
          Filesize

          559KB

          MD5

          75fccc3ffe4fdeaa26b9098975ba3772

          SHA1

          9f04339adecad084b9696f757a8c12d3fd036be0

          SHA256

          71fd0603ba5bb405a0d134595c0d7f7d2ffd83bf1d083d4ccb6e7382f5bef81e

          SHA512

          bd3c65aa43b88dd3e1449180944d7dd6df3734fb1097117be4285b8b4bd72e7decf5e3e18e8a49b51b71b47b9ae9e444128dfeb1167a4b04a08dc220d314e3bd

        • memory/2308-131-0x0000000000000000-mapping.dmp
        • memory/3696-134-0x0000000000000000-mapping.dmp