Analysis

  • max time kernel
    130s
  • max time network
    99s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/05/2024, 17:20

General

  • Target
    ebdde5047577ec38e8335e178b5d54b0_NEAS.exe
  • Size 125KB
  • Sample240507-vwrrnsad86
  • SHA256 95aa7be3d19381f67866b73714e9b55ccd6468c62c1c6763a223546b28ede9b1
  • MD5 SHA1 SHA512 SSDEEP

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.

  • 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 2 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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\ebdde5047577ec38e8335e178b5d54b0_NEAS.exe
    "C:\Users\Admin\AppData\Local\Temp\ebdde5047577ec38e8335e178b5d54b0_NEAS.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:3044
    • C:\Users\Admin\AppData\Local\Temp\3582-490\ebdde5047577ec38e8335e178b5d54b0_NEAS.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\ebdde5047577ec38e8335e178b5d54b0_NEAS.exe"
      2⤵
      • Executes dropped EXE
      PID:2808

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        ACROTE~1.EXE

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE
        • Size 86KB
        • SHA256 ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29
        • MD5 SHA1 SHA512 SSDEEP

        ebdde5047577ec38e8335e178b5d54b0_NEAS.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\ebdde5047577ec38e8335e178b5d54b0_NEAS.exe
        • Size 85KB
        • SHA256 387276a68dc4d114f753a9feedae914446fac0022c291d9f08f0398199d9e6d0
        • MD5 SHA1 SHA512 SSDEEP

        memory/3044-99-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3044-100-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3044-102-0x0000000000400000-0x000000000041B000-memory.dmp