Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    04/02/2024, 20:53

General

  • Target
    VirusShare_fb3372c20be0b599313c4bd1988988a9.exe
  • Size 634KB
  • Sample240204-zpmxcscefl
  • SHA256 cb07b8fc43fe913578efd6a6480d9477301aa0230a413dac255803b0af957dde
  • MD5 SHA1 SHA512 SSDEEP

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_fb3372c20be0b599313c4bd1988988a9.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_fb3372c20be0b599313c4bd1988988a9.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:2348
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home2633\ie\MediaWatchV1home2633.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:2208
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:2644

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          MediaWatchV1home2633.dll

          • Path C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home2633\ie\MediaWatchV1home2633.dll
          • Size 85KB
          • SHA256 79eb987d66fb4bab872efdcf353ec85cf45630d61cf8c1d42fd64ad79e8566c6
          • MD5 SHA1 SHA512 SSDEEP

          aminsis.dll

          • Path \Users\Admin\AppData\Local\Temp\nsd1A74.tmp\aminsis.dll
          • Size 559KB
          • SHA256 b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539
          • MD5 SHA1 SHA512 SSDEEP