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, 16:19

General

  • Target

    VirusShare_6cef53812dca6db17872a41b15b28cb2.exe

  • Size

    634KB

  • MD5

    6cef53812dca6db17872a41b15b28cb2

  • SHA1

    d641fd8cb15634a8391b8d6a7e2e204d905adad7

  • SHA256

    18f807416a6d91f878ee2008b8cdb1638f7c9a759efbec15e984caecc9f179f7

  • SHA512

    1586db052a80d61a88134484f3faacf5a9305e7b22ca0ffa35302334f3f6d993bab13d81f3775f4490eb9f6d5684828b9e094ee75d3d9615940505fe5ebd98c0

  • SSDEEP

    12288:4JTG4GjeZHkwuPikQ7lKH5p5H9x1neZHkwuTiBQVlKz5p9xl/lfy:4JTG4GjeZEXi37l6Br1neZELiGVls1f4

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_6cef53812dca6db17872a41b15b28cb2.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_6cef53812dca6db17872a41b15b28cb2.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:1984
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home3046\ie\MediaWatchV1home3046.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:1424
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:2132

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\nsy3F81.tmp\aminsis.dll

            Filesize

            559KB

            MD5

            51ba1095f0ae45a2d444bea506cb9ad4

            SHA1

            038a5d53d055a6d440bd2c8864c2f51db206c5e5

            SHA256

            b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539

            SHA512

            f5fe2dd0f19bcaab47540ceedbec71f7f7c5b833c8772c097594c458e5f1101fe9feb849812b65c175055f71dfb13f11c4ad94fef42cd66f247413e453de3361

          • \Program Files (x86)\MediaWatchV1\MediaWatchV1home3046\ie\MediaWatchV1home3046.dll

            Filesize

            85KB

            MD5

            1b41a959e93ec9bb510faa04cb63396f

            SHA1

            1f1d08bc0c59edb5d585ae6cbf3ef40bc5c0fb6a

            SHA256

            bb29aa10b8a138e580caa9d1275b85d0c72dac2ad769ee686d191389ef362e0d

            SHA512

            4f11f50195949f8c1a7908c6149264e63d05b814f09577ea38254f285d4e700aa3ce1713d52934a2aa14ef0e68bc2fca94c7d988bf04a70d75e314be846b1f18