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Analysis

  • max time kernel
    123s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    27/10/2024, 22:50

General

  • Target

    7658b3343bd44eb5fb03c790879d566f_JaffaCakes118.exe

  • Size

    657KB

  • MD5

    7658b3343bd44eb5fb03c790879d566f

  • SHA1

    4c4978b7de2d2caae725d87fb29283fe09e11630

  • SHA256

    4e3a455f49b0089a652c5844a03a076c2cefdf7b8b893c4a5fc62eee7fa3d3f0

  • SHA512

    d020eec2749d13e19d4f0433b81aa8bb119620c39274d71fec9e9c8fd21ac389ac7b9517a14c7fa2656955de3aa211d6009d4b36d276d3f6184deb03b26b03aa

  • SSDEEP

    12288:s9Y+eWG4GQTq4OaQQTYJ8eP4/L5uO7D3f5Bvq4IapQTsJ8ePj/p5uO73U260Br:s9Y+eWG4GQm4OaHYJ8eP4D5uOHBBS4Io

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\7658b3343bd44eb5fb03c790879d566f_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\7658b3343bd44eb5fb03c790879d566f_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:2692
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2356\ie\RichMediaViewV1release2356.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:2932
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2560

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release2356\ie\RichMediaViewV1release2356.dll

    Filesize

    85KB

    MD5

    5c05d6709cc60cbf1d2f37dad0899df6

    SHA1

    ffed1cec1ee61a81ba4590d890c4b6f3dc4f67ec

    SHA256

    b618538d23fb8e00f1789ae1302ca00c74a5fc0af31797de5212a3f5e45bfcef

    SHA512

    302e7ef5b7dbd6451372b5cee5ef56370ca9d52b4000effd22071e4fd84ad99ca1497261458ac5c650099c0af50dda4f0a245aaf8ae99b5bf3c92dd444bf36f3

  • C:\Users\Admin\AppData\Local\Temp\nsjEC34.tmp\aminsis.dll

    Filesize

    567KB

    MD5

    450753ad96785a240a39deccab3af0d0

    SHA1

    21c544064d2ffa6444508268ce258a330d459fc5

    SHA256

    1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

    SHA512

    c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab