Analysis

  • max time kernel
    124s
  • max time network
    128s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    04/02/2024, 16:14

General

  • Target

    VirusShare_d08375fd24611ef6e185edc2dd58865b.exe

  • Size

    634KB

  • MD5

    d08375fd24611ef6e185edc2dd58865b

  • SHA1

    31d29a4bad062ae107094f156cc18f6b9acc25cf

  • SHA256

    6d0c6a70ffbd306ab73d9185f224cd79d0815dfb4be304fa8a85129fa43f8079

  • SHA512

    9f59878678f036fb86bdacdb9a7e5f5c9f91e04e4331c845159698ece3174003851271d6ecb602ee92fd061bbe5c2caa65f4e16b4f4bb63ff10d4e07bd1326ce

  • SSDEEP

    12288:AfMrK/YFdG4GjeZHkwuPikQ7lKH5p5H9x1SeZHkwuViRQJlKT5pjxFlfF:AOG4GjeZEXi37l6Br1SeZEti2JlMrflN

Malware Config

Signatures

  • 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 3 IoCs

    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).

  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies registry class 36 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\VirusShare_d08375fd24611ef6e185edc2dd58865b.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_d08375fd24611ef6e185edc2dd58865b.exe"
    1⤵
    • 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:616
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home4984\ie\MediaWatchV1home4984.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:2660
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:2716

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home4984\ie\MediaWatchV1home4984.dll

            Filesize

            85KB

            MD5

            90b417db3640c6ea27aeab4d21d9cd63

            SHA1

            e510d5bf699def66c409b851fdaeab0af4895349

            SHA256

            2c925b5a683ad724e49f0fc6e41cfea1cc26c2cee97ffb0226cc643082967f37

            SHA512

            82d87e022feca38412b57c0b6df0dd28e225fed7e0ace6519a81b597ab5519db41ad72807856233acbe9b87e41876935e337f124481af0152d08186e9556b2f6

          • \Users\Admin\AppData\Local\Temp\nsi5A41.tmp\aminsis.dll

            Filesize

            559KB

            MD5

            51ba1095f0ae45a2d444bea506cb9ad4

            SHA1

            038a5d53d055a6d440bd2c8864c2f51db206c5e5

            SHA256

            b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539

            SHA512

            f5fe2dd0f19bcaab47540ceedbec71f7f7c5b833c8772c097594c458e5f1101fe9feb849812b65c175055f71dfb13f11c4ad94fef42cd66f247413e453de3361