Analysis

  • max time kernel
    125s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240412-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/04/2024, 19:09

General

  • Target
    153a21844ea08dca1f61f091c26cfb5eac91d46e1b9a378d43a767669b6cf148.exe
  • Size 634KB
  • Sample240414-xtx7saeb4y
  • SHA256 153a21844ea08dca1f61f091c26cfb5eac91d46e1b9a378d43a767669b6cf148
  • MD5 SHA1 SHA512 SSDEEP

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\153a21844ea08dca1f61f091c26cfb5eac91d46e1b9a378d43a767669b6cf148.exe
    "C:\Users\Admin\AppData\Local\Temp\153a21844ea08dca1f61f091c26cfb5eac91d46e1b9a378d43a767669b6cf148.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:2560
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home2854\ie\MediaWatchV1home2854.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies registry class
      PID:4744
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
        PID:3352
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:2252
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
        1⤵
          PID:1736
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4412,i,4190291444332669241,12594774403502447104,262144 --variations-seed-version --mojo-platform-channel-handle=1440 /prefetch:8
          1⤵
            PID:4528

          Network

                MITRE ATT&CK Enterprise v15

                Replay Monitor

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                Downloads

                MediaWatchV1home2854.dll

                • Path C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home2854\ie\MediaWatchV1home2854.dll
                • Size 85KB
                • SHA256 81ebd5b5c8ee4d8a7fd96556653c2c5d6de3a91586e0840a03df93378f9793f3
                • MD5 SHA1 SHA512 SSDEEP

                aminsis.dll

                • Path C:\Users\Admin\AppData\Local\Temp\nse22F.tmp\aminsis.dll
                • Size 559KB
                • SHA256 b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539
                • MD5 SHA1 SHA512 SSDEEP