Analysis

  • max time kernel
    103s
  • max time network
    115s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250410-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250410-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/04/2025, 14:06

General

  • Target

    2025-04-15_e71721e98f4ffac5cf80a1a152b7785b_black-basta_elex_neshta.exe

  • Size

    3.4MB

  • MD5

    e71721e98f4ffac5cf80a1a152b7785b

  • SHA1

    4d6e82049f8af99850a03ee4dc73f2d7329be10e

  • SHA256

    aece8c643947cab81aee3b77e6af7481302964eb195154fdde965e788165b6ea

  • SHA512

    0a57c4b3c128f319d2f8e6a0cd5a63b2ced124dbeeb348c20fa19c3adb8a6579fbdcf370db8bc4803276e73b1503aff83ad2aeac24565baf9d527e4b86e7016d

  • SSDEEP

    49152:FOt8K+RWWBxL4td+icCnAO1lde/OUiBqecx5dUI0+9ITcZAz:9Rx9cd+69q7S

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.

  • Checks system information in the registry 2 TTPs 2 IoCs

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

  • 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 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-04-15_e71721e98f4ffac5cf80a1a152b7785b_black-basta_elex_neshta.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-04-15_e71721e98f4ffac5cf80a1a152b7785b_black-basta_elex_neshta.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:1400
    • C:\Users\Admin\AppData\Local\Temp\3582-490\2025-04-15_e71721e98f4ffac5cf80a1a152b7785b_black-basta_elex_neshta.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\2025-04-15_e71721e98f4ffac5cf80a1a152b7785b_black-basta_elex_neshta.exe"
      2⤵
      • Executes dropped EXE
      • Checks system information in the registry
      • Drops file in Program Files directory
      PID:4288

Network

MITRE ATT&CK Enterprise v16

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\2025-04-15_e71721e98f4ffac5cf80a1a152b7785b_black-basta_elex_neshta.exe

    Filesize

    3.4MB

    MD5

    3b42e78d7798ab39404086ac9271f812

    SHA1

    21a5442cd69d588b5425d1af8e8957eb07929eb7

    SHA256

    cd3c9992117b652de4015e6d0593d4df4d7802626455def8a03a5ae4774946a1

    SHA512

    71ccb49f98fcd01512a692625e1b583ca90b34cf6c4a9814a2a12c31eb5fc81194265d043887b0e3319ac5f99917707fc472ed25ce82d458cbaf1502a1a41784

  • memory/1400-139-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1400-140-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1400-142-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB