Analysis

  • max time kernel
    122s
  • max time network
    126s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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

  • 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_7eefa384bb45f1c587a6c0b9efdd25b5.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_7eefa384bb45f1c587a6c0b9efdd25b5.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:1228
    • 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:2376
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:2860

    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\nso56B9.tmp\aminsis.dll

            Filesize

            256KB

            MD5

            250506b6b89bd2a5d5fb9c123998706a

            SHA1

            bbf2c13179a06294dae38f3d36dc07a83cf7f382

            SHA256

            6360ed71fd72bb619b103e50f8e13a932bf5441b08085ace682e652cddd2d173

            SHA512

            8d4de81f60138438637288b62302fddefad5daa49fe0896d800970f11ff315e094006e82581afbdd57515ca574ce623df35e02008884eb18809b5f74b56abf6e

          • \Users\Admin\AppData\Local\Temp\nso56B9.tmp\aminsis.dll

            Filesize

            448KB

            MD5

            90f4afa1429965dc1cd439c85edb1546

            SHA1

            82a16034058c9e8ac40309d7f5ef46a08404d9aa

            SHA256

            64109ecb75347e10d7fbad39f1229697cb8c57f68ac59ecc32dc86eb9ae0d496

            SHA512

            a65d2fcae932c71ece96b40ebed4b8cc60b6787ba4d7da5c3da39c09a4f73941a89d5aeb38e92846151fc3f334c2236f41de5868a3cb423c6f682f482286dd70