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Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    12/10/2024, 23:28

General

  • Target

    3c97d5d9c08de6c79d88c49d86014317_JaffaCakes118.exe

  • Size

    657KB

  • MD5

    3c97d5d9c08de6c79d88c49d86014317

  • SHA1

    a5225330cc442bc4316816d6e9205aac672fe21e

  • SHA256

    624766bd549273311a6792c4e52cc528bc58769541a60079e5a8717376335b94

  • SHA512

    decb6e8275b56818a935a276808615576daf6bebe09b21702b7b0e3a7be8b7ba043a5cfd17c1b34c995715d1e6e89d0e1e253b0a1ee439dee4a0858b7ce5f2ee

  • SSDEEP

    12288:Kx0jG4GQTq4OaQQTYJ8eP4/L5uO7D3f5BLq48aLQTkJ8ePv/r5uO7vU26ZIB:KCG4GQm4OaHYJ8eP4D5uOHBBe48aykJr

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\3c97d5d9c08de6c79d88c49d86014317_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\3c97d5d9c08de6c79d88c49d86014317_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:872
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release1335\ie\RichMediaViewV1release1335.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:3928
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4460
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc
    1⤵
      PID:3344
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum
      1⤵
        PID:3188

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release1335\ie\RichMediaViewV1release1335.dll

        Filesize

        85KB

        MD5

        085808c01ae02dd2bb21fe9cd10314d4

        SHA1

        c7bf5d0fa63c96b423c186b0802283eaa84ad358

        SHA256

        41f3a93293ca7a40249c25c8afc46b0d3e8c644d8bddfea9506f3d035cf6c9fe

        SHA512

        823506c32ed35df5a9d122f75f517c1e1e20f164a52a626602f885e857077dd27eb4baf1f91be7aca0faa4f4612d093a0a8c706756198943966d44dbadfec2dc

      • C:\Users\Admin\AppData\Local\Temp\nshB1DC.tmp\aminsis.dll

        Filesize

        567KB

        MD5

        450753ad96785a240a39deccab3af0d0

        SHA1

        21c544064d2ffa6444508268ce258a330d459fc5

        SHA256

        1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

        SHA512

        c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab