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Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/02/2025, 23:44

General

  • Target

    JaffaCakes118_76d5cc95b10c3b17a11046381e70c0e6.exe

  • Size

    239KB

  • MD5

    76d5cc95b10c3b17a11046381e70c0e6

  • SHA1

    ba438a8b996805ad38bd2300cf3b3cdb4b73154d

  • SHA256

    2cdf73e866d398d30b2b43715a0ecb0658b4b49e42cc4335e34a8e2d148e99f6

  • SHA512

    9aca507e6e686470404fd69dae23223fd2d01940ffa3a07792660d896a525ad439d5121ee6cff3b9c22b44b82b3397c05b65d5bdc28783abc0639cfa84bd8e5c

  • SSDEEP

    3072:sr85C17d1UVjs6sut9VR9b28E5+tY7ASzBlyXpUcD7A8qTa+JmA6r85C:k917dAsBo9VR9al++nz+S+CJmF9

Malware Config

Signatures

  • Detect Neshta payload 4 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_76d5cc95b10c3b17a11046381e70c0e6.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_76d5cc95b10c3b17a11046381e70c0e6.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2124
    • C:\Users\Admin\AppData\Local\Temp\3582-490\JaffaCakes118_76d5cc95b10c3b17a11046381e70c0e6.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\JaffaCakes118_76d5cc95b10c3b17a11046381e70c0e6.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4384
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4384 -s 444
        3⤵
        • Program crash
        PID:552
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4384 -ip 4384
    1⤵
      PID:2664

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

      Filesize

      86KB

      MD5

      3b73078a714bf61d1c19ebc3afc0e454

      SHA1

      9abeabd74613a2f533e2244c9ee6f967188e4e7e

      SHA256

      ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

      SHA512

      75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

    • C:\Users\Admin\AppData\Local\Temp\3582-490\JaffaCakes118_76d5cc95b10c3b17a11046381e70c0e6.exe

      Filesize

      199KB

      MD5

      3bce6158d3f8526139ebd2bcb9a88476

      SHA1

      1ed95327a120ab43726e1293179ecdb33c5257b0

      SHA256

      a042693eedb1faba8bd1b8cd3b1bc3ff08c5468234fa09dbee36e79eaa930a0a

      SHA512

      077417519760450e7bf4fab887c51a4f00c43082b534dd2328f2800d3cbbddf4ac55584253ad9a0072de03441fe37e39ba74cfb03eeaad4d31dfd35f66df524a

    • memory/2124-97-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2124-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2124-100-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB