Analysis

  • max time kernel
    120s
  • 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, 16:16

General

  • Target

    VirusShare_909e8c66ce11649ae9e2564bfd6069b1.exe

  • Size

    634KB

  • MD5

    909e8c66ce11649ae9e2564bfd6069b1

  • SHA1

    2ef31c735e3d9acccab6627f2e766a681340b8e4

  • SHA256

    e888b16855db866dac97307189632e7c36c8c909f4fa33c2e554685d9b6d143d

  • SHA512

    ff8b5e5b6425b3b3f3dd7187b265f447fe13f924cd34c4fef65bd7220c7ed75360ad3915ea08dd62ab3122e5bc7daf6311af79d4bb19b93209f3462811e8e4f7

  • SSDEEP

    12288:8IMFtGbG4GjeZHkwuPikQ7lKH5p5H9x1TeZHkwuliXQTlKB5pixyiRK:8ISgG4GjeZEXi37l6Br1TeZEdigTl26A

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_909e8c66ce11649ae9e2564bfd6069b1.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_909e8c66ce11649ae9e2564bfd6069b1.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:5108
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home1721\ie\MediaWatchV1home1721.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:4248
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:4028
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:3100
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
        1⤵
          PID:1688

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              • C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home1721\ie\MediaWatchV1home1721.dll

                Filesize

                85KB

                MD5

                2a580cc0f744c5447e8e83e62b2f59fc

                SHA1

                99b056fee3a1cc0ad9865735c49fd05c62207993

                SHA256

                92d4fcad2f1c9e9bc1b9a1150a2fb9ba1d59ec8730897a055ab6ce17689558c1

                SHA512

                36f49a20f13d9de60997bd306b00e744aebd307fbe959ffd4aa9c89deb112a9563699852d109cc35875c41c3a2e3cf5a2bf29548502bb78edf7ada5d8fec2bbd

              • C:\Users\Admin\AppData\Local\Temp\nsl4A48.tmp\aminsis.dll

                Filesize

                559KB

                MD5

                51ba1095f0ae45a2d444bea506cb9ad4

                SHA1

                038a5d53d055a6d440bd2c8864c2f51db206c5e5

                SHA256

                b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539

                SHA512

                f5fe2dd0f19bcaab47540ceedbec71f7f7c5b833c8772c097594c458e5f1101fe9feb849812b65c175055f71dfb13f11c4ad94fef42cd66f247413e453de3361