Analysis

  • max time kernel
    94s
  • max time network
    101s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19-12-2024 21:20

General

  • Target

    2b7da231c7ec9c3c179a290dd06f955a2619d2a79bbd040df1a3470f9cfa9a55N.exe

  • Size

    139KB

  • MD5

    5af408126a2b83ad48deddb825fb2f70

  • SHA1

    8cb9a1e64cf6be74a3094058de24d88cde22b45f

  • SHA256

    2b7da231c7ec9c3c179a290dd06f955a2619d2a79bbd040df1a3470f9cfa9a55

  • SHA512

    575be9b6876828319f5ae1c90d348283ce9b0b5dd6c89021626967ac9d7a8347b73bbe89bdbbd1e0ac5acc617156cef2ae9735e48d8582b2e2b1212e8f31fee2

  • SSDEEP

    3072:sr85CtaivUozB+x+cZEfZU+l/8xoAm2+YDfYz8GrR/:k9/zB+Aw0ZNr2fYLl

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).

  • 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.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\2b7da231c7ec9c3c179a290dd06f955a2619d2a79bbd040df1a3470f9cfa9a55N.exe
    "C:\Users\Admin\AppData\Local\Temp\2b7da231c7ec9c3c179a290dd06f955a2619d2a79bbd040df1a3470f9cfa9a55N.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:1904
    • C:\Users\Admin\AppData\Local\Temp\3582-490\2b7da231c7ec9c3c179a290dd06f955a2619d2a79bbd040df1a3470f9cfa9a55N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\2b7da231c7ec9c3c179a290dd06f955a2619d2a79bbd040df1a3470f9cfa9a55N.exe"
      2⤵
      • Executes dropped EXE
      PID:1236

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\2b7da231c7ec9c3c179a290dd06f955a2619d2a79bbd040df1a3470f9cfa9a55N.exe

    Filesize

    98KB

    MD5

    ebda3cfc01ccc15e16a884f951575e2c

    SHA1

    51049667d5622b247df7a1b696a34a140accc4d9

    SHA256

    bbc1eaf321926ca4ac76e627fe88fe154eacc0ca91b3fc3f94aeaf873379448b

    SHA512

    c55a373543f3396f646d07deb1efc56477f480eb18084f25717b6d9b204aa4c6bb0e8144af2add5e7d2064067dcbbff79bb3d6f6e484ee0caece8388684a66c8

  • memory/1904-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1904-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1904-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1904-98-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB