Analysis

  • max time kernel
    121s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    03/11/2024, 15:57

General

  • Target
    8c49e6c10ba6e9e6bf59580e6067ce27_JaffaCakes118.exe
  • Size 634KB
  • Sample241103-tedcaaxlav
  • SHA256 86d8fa398156d1ed19e22d123330b93c99bff52601be43b9a7ba84b132e11b27
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • 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 3 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8c49e6c10ba6e9e6bf59580e6067ce27_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8c49e6c10ba6e9e6bf59580e6067ce27_JaffaCakes118.exe"
    1⤵
    • 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:2068
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home526\ie\MediaWatchV1home526.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:784
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2764

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        MediaWatchV1home526.dll

        • Path C:\Program Files (x86)\MediaWatchV1\MediaWatchV1home526\ie\MediaWatchV1home526.dll
        • Size 85KB
        • SHA256 487bad8862ab1a342c4662ff9c1dde980e859598da00dae4b1a53b974210231b
        • MD5 SHA1 SHA512 SSDEEP

        aminsis.dll

        • Path \Users\Admin\AppData\Local\Temp\nsj9E34.tmp\aminsis.dll
        • Size 559KB
        • SHA256 b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539
        • MD5 SHA1 SHA512 SSDEEP