Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-11-2024 13:49

General

  • Target

    b1a41a4692e653d3eda3a13218194f05_JaffaCakes118.exe

  • Size

    657KB

  • MD5

    b1a41a4692e653d3eda3a13218194f05

  • SHA1

    54e8d1af129e2f37cf7a36ae434688b5f9329a13

  • SHA256

    b1fd0e9d75588f9c6bdc3adb67699d212c8bc21827553c0e91ef0a2a57fd353f

  • SHA512

    b2610c8411f6853fac2a6cdca57fc769e5b0d72a4ef51a7127f60fbeaab361847c86d6841e780f6b9bcbd2f5b9f4ff5333ef43202e397f8c41165204243ea11c

  • SSDEEP

    12288:PMj40yDG4GQTq4OaQQTYJ8eP4/L5uO7D3f5Bbq4GaFQTwJ8ePV/t5uO7ELvHhAY:P02DG4GQm4OaHYJ8eP4D5uOHBBu4GacJ

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\b1a41a4692e653d3eda3a13218194f05_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b1a41a4692e653d3eda3a13218194f05_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:3580
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release235\ie\RichMediaViewV1release235.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:3872
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4820
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:5096
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:960

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release235\ie\RichMediaViewV1release235.dll

        Filesize

        85KB

        MD5

        69e8031c107b6575ca910f3c8941493d

        SHA1

        93a0f83e5f2603d90866c2ffdd23a12bd6edb66e

        SHA256

        82122e33763b17118a49305e185b3aad91d6e2f4fbe149817400f341a1c5153e

        SHA512

        3ca4591a33c8a3886ab266d2877fc36d034da036570a4038763f5a0b117acb1cdeabc8f9955c949a4ca6f08c6eb072f235c4dad3398a3211a8c909ad01cd736a

      • C:\Users\Admin\AppData\Local\Temp\nsoB641.tmp\aminsis.dll

        Filesize

        567KB

        MD5

        450753ad96785a240a39deccab3af0d0

        SHA1

        21c544064d2ffa6444508268ce258a330d459fc5

        SHA256

        1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

        SHA512

        c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab