Analysis

  • max time kernel
    149s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    28-05-2022 00:19

General

  • Target

    037b99ded042d1f7fd492d8ee02ca87fd91396ce479fad0c55653e72abd2504e.exe

  • Size

    632KB

  • MD5

    77b0fb0d68363d28d9d1438e902bf810

  • SHA1

    932d5ddf619f0dd23ba7c1da2593ee4628082d35

  • SHA256

    037b99ded042d1f7fd492d8ee02ca87fd91396ce479fad0c55653e72abd2504e

  • SHA512

    f32fb36c3da1763ac4ec3dc5a13fa66c756f69abd4baf1869bf4188f3c3c2d99c0687d513068a678e4c4949353fd3d690b3dc236705c6787a617c8b7779e4214

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\037b99ded042d1f7fd492d8ee02ca87fd91396ce479fad0c55653e72abd2504e.exe
    "C:\Users\Admin\AppData\Local\Temp\037b99ded042d1f7fd492d8ee02ca87fd91396ce479fad0c55653e72abd2504e.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:4744
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha3501\ie\MediaViewV1alpha3501.dll" /s
      2⤵
      • Loads dropped DLL
      • Modifies registry class
      PID:4876
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:4316
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:4608
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
        1⤵
          PID:2532

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha3501\ie\MediaViewV1alpha3501.dll
          Filesize

          85KB

          MD5

          3945bcd177b7ea2e2afcb8ce392e514b

          SHA1

          e9c498981848871bf074dbe33c79ada1c458522d

          SHA256

          344de8098bfe9297a81f53f1e10352fcf0c7aca514c0491a8d14e7d03668f0a8

          SHA512

          31d35e27a9cf23e6dd3790bcdc7f0b3a8f3c3716768e61e58502e9505dfee11f1d8932c705062bf81c1610abaefaad75c1eb99774e1484c0cd98301458f329b6

        • C:\Program Files (x86)\MediaViewV1\MediaViewV1alpha3501\ie\MediaViewV1alpha3501.dll
          Filesize

          85KB

          MD5

          3945bcd177b7ea2e2afcb8ce392e514b

          SHA1

          e9c498981848871bf074dbe33c79ada1c458522d

          SHA256

          344de8098bfe9297a81f53f1e10352fcf0c7aca514c0491a8d14e7d03668f0a8

          SHA512

          31d35e27a9cf23e6dd3790bcdc7f0b3a8f3c3716768e61e58502e9505dfee11f1d8932c705062bf81c1610abaefaad75c1eb99774e1484c0cd98301458f329b6

        • C:\Users\Admin\AppData\Local\Temp\nsq62E1.tmp\aminsis.dll
          Filesize

          559KB

          MD5

          75fccc3ffe4fdeaa26b9098975ba3772

          SHA1

          9f04339adecad084b9696f757a8c12d3fd036be0

          SHA256

          71fd0603ba5bb405a0d134595c0d7f7d2ffd83bf1d083d4ccb6e7382f5bef81e

          SHA512

          bd3c65aa43b88dd3e1449180944d7dd6df3734fb1097117be4285b8b4bd72e7decf5e3e18e8a49b51b71b47b9ae9e444128dfeb1167a4b04a08dc220d314e3bd

        • memory/4316-134-0x0000000000000000-mapping.dmp
        • memory/4876-131-0x0000000000000000-mapping.dmp