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Analysis

  • max time kernel
    93s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/01/2025, 18:54

General

  • Target

    d6b9f623a2bc3d5f7e8d1cc9b11f4e2e171940185f399e2c7a16c5d738759535N.exe

  • Size

    588KB

  • MD5

    cdad0b8242265f1eccf4c4d46e6d6d40

  • SHA1

    86d7e0b4e3219835def951d91a527fe316076b3f

  • SHA256

    d6b9f623a2bc3d5f7e8d1cc9b11f4e2e171940185f399e2c7a16c5d738759535

  • SHA512

    9095581cfbe76ce12ae28f7897e217ac4b15eb1acdcde65761faee62d1d27688c22942aff798ca5dbfa1d6d82c14058fa1d555624c63845ba8415885989a7372

  • SSDEEP

    12288:puTB1OJGp7TGOga58utGbr0rv/Gc6ZXnaWl9ZdMbRHTQ2e:pCsJ8/GOv8utGbr0rv/j6ZZlteFTQ2e

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 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\d6b9f623a2bc3d5f7e8d1cc9b11f4e2e171940185f399e2c7a16c5d738759535N.exe
    "C:\Users\Admin\AppData\Local\Temp\d6b9f623a2bc3d5f7e8d1cc9b11f4e2e171940185f399e2c7a16c5d738759535N.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:628
    • C:\Users\Admin\AppData\Local\Temp\3582-490\d6b9f623a2bc3d5f7e8d1cc9b11f4e2e171940185f399e2c7a16c5d738759535N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\d6b9f623a2bc3d5f7e8d1cc9b11f4e2e171940185f399e2c7a16c5d738759535N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:1112

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\d6b9f623a2bc3d5f7e8d1cc9b11f4e2e171940185f399e2c7a16c5d738759535N.exe

    Filesize

    548KB

    MD5

    787199a8f627a404f8c46e76168dff25

    SHA1

    6cc120d7eee9ef71dbff2ed3ccb65c13b865f3a7

    SHA256

    45f6b47d0b945037ea33efb9d13ec0a0ce11e70d669a35a0f914822fc164db88

    SHA512

    735a5359a4c7af5d76ac2a9eefd8aee4bd86d126f300bc63e1d7f4d712922faa326e499eb6d0f333902f7070c8c5500a00f918750c108b0b0413a1ab218d11f1

  • memory/628-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/628-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/628-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB