Analysis

  • max time kernel
    144s
  • max time network
    148s
  • 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, 16:18

General

  • Target

    VirusShare_7eefa384bb45f1c587a6c0b9efdd25b5.exe

  • Size

    634KB

  • MD5

    7eefa384bb45f1c587a6c0b9efdd25b5

  • SHA1

    d1fcf425e417f5cb78c7c71b567b6b830ff6fdc8

  • SHA256

    d2019c67c287ba0fdce12b9f623736e65bc1bc53cf7acee37411f2a721feba97

  • SHA512

    7e0fee0bafe90bb7759020bf254113f39c125e41aaafd82db8b8773e399d3c3dc23949354330b33eb53d7381869113e030afa0dc248782093e95dd495dcfb0db

  • SSDEEP

    12288:aR3m+y1G4GjeZHkwuPikQ7lKH5p5H9x1geZHkwuliXQTlKB5pixyiR8:aRWvG4GjeZEXi37l6Br1geZEdigTl26i

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_7eefa384bb45f1c587a6c0b9efdd25b5.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_7eefa384bb45f1c587a6c0b9efdd25b5.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:368
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home2393\ie\MediaWatchV1home2393.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:1408
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:400
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:544
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
        1⤵
          PID:916

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              • C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home2393\ie\MediaWatchV1home2393.dll

                Filesize

                85KB

                MD5

                8305af04e859cb3d2024fa461d340699

                SHA1

                67f82a7ea03052c499be604c1abce36fd8e46e55

                SHA256

                b2b03590b85bcf3f20f122d1ae2189bcb12ad6e0c2862072542dc549c492207f

                SHA512

                7cc58ffe224057cd4e281377f966904c478a0f003f61c6e84bcdd7deedcba800354584a87c9a25976e9ca19ba759032dd72ab32c400b1aa7405bc1e2e7df49ea

              • C:\Users\Admin\AppData\Local\Temp\nsx3FF8.tmp\aminsis.dll

                Filesize

                559KB

                MD5

                51ba1095f0ae45a2d444bea506cb9ad4

                SHA1

                038a5d53d055a6d440bd2c8864c2f51db206c5e5

                SHA256

                b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539

                SHA512

                f5fe2dd0f19bcaab47540ceedbec71f7f7c5b833c8772c097594c458e5f1101fe9feb849812b65c175055f71dfb13f11c4ad94fef42cd66f247413e453de3361