Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-11-2024 23:51

General

  • Target

    657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.exe

  • Size

    85KB

  • MD5

    8300620f310c381e602038318cd14f37

  • SHA1

    e857a86f8ba8d6db8bbbad286bd126622f36eeb3

  • SHA256

    657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a

  • SHA512

    129436555640d31ce3e344e2506d8d0a2ae4e286fb2cb932c81a42c85860e315558d6a4d860f25d539d4785ba632e7aba8ec3a86872c5e5d7857ba9e449278a1

  • SSDEEP

    1536:JxqjQ+P04wsmJCsitUBWJOuT132rKE7UFWy31aV8gE8g7UFWy:sr85CsSwuZ8a1r2g

Malware Config

Signatures

  • Detect Neshta payload 5 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\657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.exe
    "C:\Users\Admin\AppData\Local\Temp\657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.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:2284
    • C:\Users\Admin\AppData\Local\Temp\3582-490\657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:3464
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3464 -s 816
        3⤵
        • Program crash
        PID:3896
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3464 -ip 3464
    1⤵
      PID:1576

    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\657054a6d94b713a86a2d78a713d9a47e00b80dc625c08bf7352a6fefdd33f3a.exe

      Filesize

      44KB

      MD5

      f39e61d71bf1276505f323518a1f06ce

      SHA1

      dc1fd21d3e05e03f0a1dfe509792ac7c7928c321

      SHA256

      9ee828f64e67ec2fcb750bfaf271a74cf062c6bae7494d9cec79e9e3ed17d91b

      SHA512

      322d65ef9dd4d2a023f87a325791f19fd791abb38b4b8e20c4f25c49855d27c4fe68cab835129398d1eeff2def13a9372fcf1033595794ecd0230fbb1fe907b0

    • memory/2284-97-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2284-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2284-99-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2284-101-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3464-12-0x0000000073E8E000-0x0000000073E8F000-memory.dmp

      Filesize

      4KB

    • memory/3464-13-0x00000000003C0000-0x00000000003D2000-memory.dmp

      Filesize

      72KB