Analysis

  • max time kernel
    140s
  • max time network
    157s
  • 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, 20:44

General

  • Target

    VirusShare_e61e3348ca9eab9c592a53d40e006120.exe

  • Size

    634KB

  • MD5

    e61e3348ca9eab9c592a53d40e006120

  • SHA1

    dd1132ce560d9189d550ea286591f25e1602b9f8

  • SHA256

    b087ad5ae69a95b7da6467a74aa0a4df2cf37bd4201cd42a5e7a537f93da466f

  • SHA512

    98516cb1bcbb124ceadfb6769971b7a2a6724a2662fa35dfd22cd2e674de520e55e5e7c524ad1d598da3077313e98df5003c9c81523483659186f131d3604eff

  • SSDEEP

    12288:3y/HmlpMqG4GjeZHkwuPikQ7lKH5p5H9x1JeZHkwuZiRQXlKL5pXCsQzvPYG:3ImVG4GjeZEXi37l6Br1JeZERi2Xlwv8

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_e61e3348ca9eab9c592a53d40e006120.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_e61e3348ca9eab9c592a53d40e006120.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:4636
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home612\ie\MediaWatchV1home612.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:4424
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:1756
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:856
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
        1⤵
          PID:2784

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              • C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home612\ie\MediaWatchV1home612.dll

                Filesize

                85KB

                MD5

                401552c001771a3f22d05cf98bd839c0

                SHA1

                710b8c3443ab3e3c682b66180a11d97148bb0b58

                SHA256

                ada2c7ac1d452d65e5c61defb5c7aeaa4bf85bdb9c943c4688440a1084b3439c

                SHA512

                5b76b3346320d03b5f81025a1966c9d4ebb246d8cfb077af2bb7baaf57a3fb9df1c351b8fd38d5e9d89fe48fe7bb5d859f8066600afeb00f6fc141acbf8f5d08

              • C:\Users\Admin\AppData\Local\Temp\nsdCD44.tmp\aminsis.dll

                Filesize

                559KB

                MD5

                51ba1095f0ae45a2d444bea506cb9ad4

                SHA1

                038a5d53d055a6d440bd2c8864c2f51db206c5e5

                SHA256

                b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539

                SHA512

                f5fe2dd0f19bcaab47540ceedbec71f7f7c5b833c8772c097594c458e5f1101fe9feb849812b65c175055f71dfb13f11c4ad94fef42cd66f247413e453de3361