Analysis

  • max time kernel
    140s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/02/2024, 16:17

General

  • Target

    VirusShare_551459045dcbe02c2ab748a954090339.exe

  • Size

    634KB

  • MD5

    551459045dcbe02c2ab748a954090339

  • SHA1

    14f2dfbd3ccf873196d7ca5bae1d3e7efe8fe385

  • SHA256

    dce1998da66274d4bced614f1d378ea87ea07c7b3677de3b4652398ffe7b0cf8

  • SHA512

    fffce74bb890f7f0232504b31fd3e841fbbe9f23d1eb665f82190149c64b7f0b48b6d7dab4a8591affd267db2fed9113b3d41230b2d443b46f009d78cefa83f7

  • SSDEEP

    12288:MJyvhIaG4GjeZHkwuPikQ7lKH5p5H9x1SueZHkwuTiBQVlKz5p9xl/lfU:MJehIaG4GjeZEXi37l6Br1SueZELiGVz

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 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 6 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\VirusShare_551459045dcbe02c2ab748a954090339.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_551459045dcbe02c2ab748a954090339.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:3136
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home981\ie\MediaWatchV1home981.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:552
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:2840
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:3164
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
        1⤵
          PID:2664

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              • C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home981\ie\MediaWatchV1home981.dll

                Filesize

                85KB

                MD5

                2a44d6de9e2fa2b86fc24997df467a33

                SHA1

                81324309dee2e1b63a6e1e4e59bf2ef6b9efce73

                SHA256

                f0d22a4df0d2bd36440fb5e6a38502bba071925be30c5db7bd54210929404fe2

                SHA512

                818e8c96c0349e82bebec4d293424071a94c3fd68744226ef49fdcc274e52b8c48160062b5fed7f11327daacf052e063000d40ae15c42eb21232e50f6e893a19

              • C:\Users\Admin\AppData\Local\Temp\nsq6DBF.tmp\aminsis.dll

                Filesize

                559KB

                MD5

                51ba1095f0ae45a2d444bea506cb9ad4

                SHA1

                038a5d53d055a6d440bd2c8864c2f51db206c5e5

                SHA256

                b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539

                SHA512

                f5fe2dd0f19bcaab47540ceedbec71f7f7c5b833c8772c097594c458e5f1101fe9feb849812b65c175055f71dfb13f11c4ad94fef42cd66f247413e453de3361