Analysis

  • max time kernel
    93s
  • max time network
    94s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-11-2024 12:50

General

  • Target

    25d08611f10189718f5b5ad55cc6b469f1af119f47ff47cf9a76a3be0a28812aN.exe

  • Size

    129KB

  • MD5

    e6809878c9a4cdbf187b41b228755110

  • SHA1

    5f5960e552efcbec02c2943230305f6fee1bf5ef

  • SHA256

    25d08611f10189718f5b5ad55cc6b469f1af119f47ff47cf9a76a3be0a28812a

  • SHA512

    6204dece8d578e993ed6323813129f829ebf82f1030bec70e06c7f69426ccac02130d28239d77a4db590e576978bf390498c6ed50e99e9c6ffa0e5545f096936

  • SSDEEP

    1536:JxqjQ+P04wsmJC8a3FwtvF3fPUyM0jvvQ+P04wsmJC8:sr85C8a3mtvFXUWrr85C8

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\25d08611f10189718f5b5ad55cc6b469f1af119f47ff47cf9a76a3be0a28812aN.exe
    "C:\Users\Admin\AppData\Local\Temp\25d08611f10189718f5b5ad55cc6b469f1af119f47ff47cf9a76a3be0a28812aN.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:5000
    • C:\Users\Admin\AppData\Local\Temp\3582-490\25d08611f10189718f5b5ad55cc6b469f1af119f47ff47cf9a76a3be0a28812aN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\25d08611f10189718f5b5ad55cc6b469f1af119f47ff47cf9a76a3be0a28812aN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4588
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4588 -s 312
        3⤵
        • Program crash
        PID:4032
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4588 -ip 4588
    1⤵
      PID:4576

    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\25d08611f10189718f5b5ad55cc6b469f1af119f47ff47cf9a76a3be0a28812aN.exe

      Filesize

      89KB

      MD5

      c5a3a95761ebe6987f1bb0dafe76c599

      SHA1

      1cad40b560ef1247017823d552876c044ece7fb8

      SHA256

      52551dba8846a0b9c6abe010d7f000684adf1f309e626cf70ce59f2cab21ca65

      SHA512

      75c206e4906b61d25d61a831717e7d77866c6fc98f89a2928575ab20a572f0c410941f4b61da1cf0b21fb2c9e46cbd93fea43aeb49e4a408a14dc43cefd1d5f2

    • memory/5000-95-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/5000-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/5000-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB