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Analysis

  • max time kernel
    121s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/10/2024, 07:29

General

  • Target

    04dcb09a8ded6c8284aab229d1993ca4_JaffaCakes118.exe

  • Size

    657KB

  • MD5

    04dcb09a8ded6c8284aab229d1993ca4

  • SHA1

    4597e37271679be266249870b35011230c1ade51

  • SHA256

    724500fee4e1c5e15c52fdcdf5c1aba918580d6755d136bdb83ff4619f1347f5

  • SHA512

    c0c01510f236f2186a1ee5dc20d0b8186f99ff5e47c146d62860b976c9231e3c8f4341002d2ac217806dc86b3baabede838b56e81a8162bada8b118aa2974dc3

  • SSDEEP

    12288:CBeNzaLrAuGrG4GQTq4OaQQTYJ8eP4/L5uO7D3f5BMq4GanQTcJ8ePx/Z5uO7dA5:CBTTGrG4GQm4OaHYJ8eP4D5uOHBBh4GD

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\04dcb09a8ded6c8284aab229d1993ca4_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\04dcb09a8ded6c8284aab229d1993ca4_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:1960
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release766\ie\RichMediaViewV1release766.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:3192
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3820
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
    1⤵
      PID:5112
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
      1⤵
        PID:5040

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release766\ie\RichMediaViewV1release766.dll

        Filesize

        85KB

        MD5

        1ed7c2b693b72d44513752894d9cc416

        SHA1

        d7166e8c19232de3ec03e6c7ab345e22a3330a6b

        SHA256

        8392afd7bc1ea45fe63ca0d1044bdd1274c5490af373ef33e4cab9d968b7c151

        SHA512

        3f640b5df6118a4390a5ec3646e68192155ed8bf87bb269d2b9960c120860ad9f6b0fb7cd3709540215ea70469b411b4ec4c05c431f54fa9f72625fd9aafd232

      • C:\Users\Admin\AppData\Local\Temp\nsyB45D.tmp\aminsis.dll

        Filesize

        567KB

        MD5

        450753ad96785a240a39deccab3af0d0

        SHA1

        21c544064d2ffa6444508268ce258a330d459fc5

        SHA256

        1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

        SHA512

        c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab