Analysis

  • max time kernel
    137s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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

  • 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\8c49e6c10ba6e9e6bf59580e6067ce27_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\8c49e6c10ba6e9e6bf59580e6067ce27_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:2660
    • 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:1780
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3408
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:4116
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:684

      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 C:\Users\Admin\AppData\Local\Temp\nsvA190.tmp\aminsis.dll
            • Size 559KB
            • SHA256 b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539
            • MD5 SHA1 SHA512 SSDEEP