Analysis

  • max time kernel
    126s
  • max time network
    128s
  • 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, 05:06

General

  • Target

    16476e48d113ddd515e30e7b54959bb1_JaffaCakes118.exe

  • Size

    657KB

  • MD5

    16476e48d113ddd515e30e7b54959bb1

  • SHA1

    6d3ffb196b8ff55e33b29dffaebb538a4965bb0e

  • SHA256

    8d815e71da8cfbbb387dfed1ebec0e48c348c920b5b3509d2a4fea2bbc6e7b12

  • SHA512

    0f93e9044f1cb03be76203c234d8574fa0bd94c9ea611b5c07b0fe80376a8c60889a4c3e5f5efad26c60345a7b3c9ed78391830014f2eb4d390a6d3f20bcdde7

  • SSDEEP

    12288:NusL1fLUG4GQTq4OaQQTYJ8eP4/L5uO7D3f5B7q4karQTuJ8ePP/h5uO7kU26aIz:NJJfLUG4GQm4OaHYJ8eP4D5uOHBBO4kW

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\16476e48d113ddd515e30e7b54959bb1_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\16476e48d113ddd515e30e7b54959bb1_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:2060
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release1189\ie\RichMediaViewV1release1189.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:3948
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:1568
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:2852
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:1312
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4392,i,10597648459838880772,16562651767759956329,262144 --variations-seed-version --mojo-platform-channel-handle=4468 /prefetch:8
        1⤵
          PID:3868

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release1189\ie\RichMediaViewV1release1189.dll

          Filesize

          85KB

          MD5

          8d1ebf74b3a4122dd145e8a900bf043a

          SHA1

          77816772fafdd868fab1b5d016dab7d081cd9669

          SHA256

          9f641a3e73d4ca9e8d911b987c0577613a3798feac3d1d0dde4dba829a78568d

          SHA512

          b071ca61749b9a8492912f98164c0ba1ad08f24d0ba7f43554d0cc66f6933267fffcb80c0c1e997a9a160b654626d3d621ee516963f72de0695c820512160e82

        • C:\Users\Admin\AppData\Local\Temp\nsk50EB.tmp\aminsis.dll

          Filesize

          567KB

          MD5

          450753ad96785a240a39deccab3af0d0

          SHA1

          21c544064d2ffa6444508268ce258a330d459fc5

          SHA256

          1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

          SHA512

          c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab