Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-10-2024 00:25

General

  • Target

    1575c09a5ef219f0349ea4629e6ba837_JaffaCakes118.exe

  • Size

    657KB

  • MD5

    1575c09a5ef219f0349ea4629e6ba837

  • SHA1

    afa498650211042072875524a2c533bebd32302e

  • SHA256

    d7e640e5e8e27f65fadcbc4058034fce05fed339e924d447686920cfc32c92a7

  • SHA512

    680e2b8113a9fed00d6a1c109f6178448b5afa22e42e69356853c957264b5fdd44a458f621a11c6f05199c2e2049c2e717fd5cd810cffce58470b70b9e262056

  • SSDEEP

    12288:faXYop67gG4GQTq4OaQQTYJ8eP4/L5uO7D3f5Biq4yaPQTMJ8ePB/x5uO7jU26A/:faI667gG4GQm4OaHYJ8eP4D5uOHBBX4p

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 3 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).

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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\1575c09a5ef219f0349ea4629e6ba837_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\1575c09a5ef219f0349ea4629e6ba837_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4196
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release3307\ie\RichMediaViewV1release3307.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:4628
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2724
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:3544
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:4148

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release3307\ie\RichMediaViewV1release3307.dll

        Filesize

        85KB

        MD5

        6bd591266618019cc108739ec08805a1

        SHA1

        969d0546c80596a280fd46ad696d7881dac544aa

        SHA256

        4b7242ebbe68c02194fd83e99d8b24b93f7509419d8da9be28d0ba123a43a7f3

        SHA512

        afc17d3dc1d0a567a99c29a979a892cd53e105306574de128a77803090082e477029995a3dfd95a3eef02642cac635bc1bece069190a41a1df357471a41a221d

      • C:\Users\Admin\AppData\Local\Temp\nsaBAC5.tmp\aminsis.dll

        Filesize

        567KB

        MD5

        450753ad96785a240a39deccab3af0d0

        SHA1

        21c544064d2ffa6444508268ce258a330d459fc5

        SHA256

        1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

        SHA512

        c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab