Analysis

  • max time kernel
    121s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/02/2024, 13:05

General

  • Target
    VirusShare_31b5abc8a8150f224d4e6fd0baeaf3df.exe
  • Size 634KB
  • Sample240204-qbmvrscdfk
  • SHA256 e0cc2d5ede31b3f46657ae781f838115dbdc4d76ffe9178dabd5a3fd0c5f0c51
  • MD5 SHA1 SHA512 SSDEEP

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_31b5abc8a8150f224d4e6fd0baeaf3df.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_31b5abc8a8150f224d4e6fd0baeaf3df.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:4796
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home989\ie\MediaWatchV1home989.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:2832
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:4432
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:2124
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
        1⤵
          PID:3092

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              MediaWatchV1home989.dll

              • Path C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home989\ie\MediaWatchV1home989.dll
              • Size 85KB
              • SHA256 5830ac2092e5d7ac532ab6a73a9c0946e4d0def965edd475646c9daec43d4461
              • MD5 SHA1 SHA512 SSDEEP

              aminsis.dll

              • Path C:\Users\Admin\AppData\Local\Temp\nsq497D.tmp\aminsis.dll
              • Size 171KB
              • SHA256 71abd80076b4848df29c1673363c2d73e7489e2c727df4fdc476a071f61a5e43
              • MD5 SHA1 SHA512 SSDEEP

              aminsis.dll

              • Path C:\Users\Admin\AppData\Local\Temp\nsq497D.tmp\aminsis.dll
              • Size 34KB
              • SHA256 5c140221e20538bb98593333b3034e38bfc1e33dbc0a69d3b9c8eb528a8e6bd2
              • MD5 SHA1 SHA512 SSDEEP