Analysis

  • max time kernel
    120s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    12/10/2024, 01:50

General

  • Target

    37df3cf0643e62a1f553cad2f8bca41e_JaffaCakes118.exe

  • Size

    657KB

  • MD5

    37df3cf0643e62a1f553cad2f8bca41e

  • SHA1

    1a47313e295853332c81fecbbeb801cb74509834

  • SHA256

    a95da4c509c06526854d2d8335f388aa1e2ae0c4ffb57fb738a0b77c9b5fbdd4

  • SHA512

    0bb40b5ae003c274893d32199c72413f3f135f59b7dbb8aefdfe53c81c13259d6c9b8d0e8e9ea0ca9348c3368f196fd8845712c6e90d9672b04dee17757b49e0

  • SSDEEP

    12288:rIpPTQG4GQTq4OaQQTYJ8eP4/L5uO7D3f5BTzq4yajQTEJ8ePv/b5uO7aLvHPAn:rSTQG4GQm4OaHYJ8eP4D5uOHBB64yaqK

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\37df3cf0643e62a1f553cad2f8bca41e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\37df3cf0643e62a1f553cad2f8bca41e_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:1036
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release998\ie\RichMediaViewV1release998.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:2864
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2580

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release998\ie\RichMediaViewV1release998.dll

          Filesize

          85KB

          MD5

          9f5e07493c033496350ecd6bf01aa98d

          SHA1

          3f055935ea041dab5458ef5fe3abac088b9927d1

          SHA256

          12221aeb03a8763aeb4432d6aca6c2a910afc8d6cca631e124d0b60bd52a263f

          SHA512

          83db78825dc279960df69b03807a9390a2cc694f66e199d20f0f3b4f13e2ae7b46eefac73e33f173f988606cc9425e3b30af7b51891b8959ce90bf625ac35f98

        • \Users\Admin\AppData\Local\Temp\nsjF0C6.tmp\aminsis.dll

          Filesize

          567KB

          MD5

          450753ad96785a240a39deccab3af0d0

          SHA1

          21c544064d2ffa6444508268ce258a330d459fc5

          SHA256

          1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

          SHA512

          c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab