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
    10-12-2024 10:12

General

  • Target

    d2137f1a7193cb641e8e5c7aa4868cfc407a4223a02b9a17f2ae022e0590f336N.exe

  • Size

    2.6MB

  • MD5

    73e9bbedaee94680352a049c7c6ce910

  • SHA1

    04c3027f8b7edec02b92add367f1f52779e5eb1f

  • SHA256

    d2137f1a7193cb641e8e5c7aa4868cfc407a4223a02b9a17f2ae022e0590f336

  • SHA512

    0e56b9988c555fc1fa8acfe8335dd282d134ef5f35d54f14a3ab2c1c380958171b5d4bd901b195d7e482d3b3c0ac2f4fa7ff90b7db100fb8b52567dbf323001b

  • SSDEEP

    24576:4M24baeG2GcVfsW2tJ93Rg8yAUgUe16vLix:4maeGjVDj/mLM

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).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d2137f1a7193cb641e8e5c7aa4868cfc407a4223a02b9a17f2ae022e0590f336N.exe
    "C:\Users\Admin\AppData\Local\Temp\d2137f1a7193cb641e8e5c7aa4868cfc407a4223a02b9a17f2ae022e0590f336N.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:1308
    • C:\Users\Admin\AppData\Local\Temp\3582-490\d2137f1a7193cb641e8e5c7aa4868cfc407a4223a02b9a17f2ae022e0590f336N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\d2137f1a7193cb641e8e5c7aa4868cfc407a4223a02b9a17f2ae022e0590f336N.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3708
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 764
        3⤵
        • Checks processor information in registry
        • Enumerates system info in registry
        • Suspicious use of AdjustPrivilegeToken
        PID:2288

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\d2137f1a7193cb641e8e5c7aa4868cfc407a4223a02b9a17f2ae022e0590f336N.exe

    Filesize

    2.6MB

    MD5

    9cd17b808ea08be836af49fa98747989

    SHA1

    a96bf53be782f053e077129e491404120a2cb172

    SHA256

    381468c5cf17bf2de27dc4dd2c122632e271aeebd8446df583b7323d90f3d4f7

    SHA512

    6135e60f0e23210c804326ea9d5ba512e6fe3b14b963e5b291efa102111a3e09e09812b0f33fab8af495e555c83992d5acfbea536297f8355617de175406286c

  • memory/1308-107-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1308-108-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1308-110-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3708-12-0x00007FFEFA385000-0x00007FFEFA386000-memory.dmp

    Filesize

    4KB

  • memory/3708-13-0x000000001BF40000-0x000000001C40E000-memory.dmp

    Filesize

    4.8MB

  • memory/3708-14-0x00007FFEFA0D0000-0x00007FFEFAA71000-memory.dmp

    Filesize

    9.6MB

  • memory/3708-15-0x000000001C4B0000-0x000000001C54C000-memory.dmp

    Filesize

    624KB

  • memory/3708-16-0x00007FFEFA0D0000-0x00007FFEFAA71000-memory.dmp

    Filesize

    9.6MB

  • memory/3708-37-0x00007FFEFA0D0000-0x00007FFEFAA71000-memory.dmp

    Filesize

    9.6MB