Analysis

  • max time kernel
    122s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    29-11-2024 13:49

General

  • Target

    b1a41a4692e653d3eda3a13218194f05_JaffaCakes118.exe

  • Size

    657KB

  • MD5

    b1a41a4692e653d3eda3a13218194f05

  • SHA1

    54e8d1af129e2f37cf7a36ae434688b5f9329a13

  • SHA256

    b1fd0e9d75588f9c6bdc3adb67699d212c8bc21827553c0e91ef0a2a57fd353f

  • SHA512

    b2610c8411f6853fac2a6cdca57fc769e5b0d72a4ef51a7127f60fbeaab361847c86d6841e780f6b9bcbd2f5b9f4ff5333ef43202e397f8c41165204243ea11c

  • SSDEEP

    12288:PMj40yDG4GQTq4OaQQTYJ8eP4/L5uO7D3f5Bbq4GaFQTwJ8ePV/t5uO7ELvHhAY:P02DG4GQm4OaHYJ8eP4D5uOHBBu4GacJ

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\b1a41a4692e653d3eda3a13218194f05_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b1a41a4692e653d3eda3a13218194f05_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:2848
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32 "C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release235\ie\RichMediaViewV1release235.dll" /s
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:3020
    • C:\Windows\SysWOW64\gpupdate.exe
      "C:\Windows\System32\gpupdate.exe" /force
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2660

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\RichMediaViewV1\RichMediaViewV1release235\ie\RichMediaViewV1release235.dll

    Filesize

    85KB

    MD5

    69e8031c107b6575ca910f3c8941493d

    SHA1

    93a0f83e5f2603d90866c2ffdd23a12bd6edb66e

    SHA256

    82122e33763b17118a49305e185b3aad91d6e2f4fbe149817400f341a1c5153e

    SHA512

    3ca4591a33c8a3886ab266d2877fc36d034da036570a4038763f5a0b117acb1cdeabc8f9955c949a4ca6f08c6eb072f235c4dad3398a3211a8c909ad01cd736a

  • \Users\Admin\AppData\Local\Temp\nso650B.tmp\aminsis.dll

    Filesize

    567KB

    MD5

    450753ad96785a240a39deccab3af0d0

    SHA1

    21c544064d2ffa6444508268ce258a330d459fc5

    SHA256

    1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

    SHA512

    c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab