Analysis

  • max time kernel
    104s
  • max time network
    130s
  • 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, 04:06

General

  • Target

    2025-04-15_a5712c32946da8db1438de9796c1e2b6_black-basta_elex_neshta.exe

  • Size

    1.8MB

  • MD5

    a5712c32946da8db1438de9796c1e2b6

  • SHA1

    daf350fc7abf7018ff8f521845d44f4759643480

  • SHA256

    246dc2a6f8de911ad18682296ed4028868b7e69bda4d156dd0c3353278d27f03

  • SHA512

    c037c73b0ac54febad99f4ca67e6f8bb95b993e7cf72fc84c4f1751bfccbc50f1d63a0f06da07ca7ae587987c005e4ca54af210193a055204d906d5632e0b1a6

  • SSDEEP

    24576:N6JEv9A/YxOIlSG7XZI9hDyYyy/BkBwXvhykLowna1uvukkkkkkkllmUFA8:NoEFAwxOiI9hDy3y/B0wIKownas0Ue8

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.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2025-04-15_a5712c32946da8db1438de9796c1e2b6_black-basta_elex_neshta.exe
    "C:\Users\Admin\AppData\Local\Temp\2025-04-15_a5712c32946da8db1438de9796c1e2b6_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:5892
    • C:\Users\Admin\AppData\Local\Temp\3582-490\2025-04-15_a5712c32946da8db1438de9796c1e2b6_black-basta_elex_neshta.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\2025-04-15_a5712c32946da8db1438de9796c1e2b6_black-basta_elex_neshta.exe"
      2⤵
      • Executes dropped EXE
      PID:1068

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_a5712c32946da8db1438de9796c1e2b6_black-basta_elex_neshta.exe

    Filesize

    1.8MB

    MD5

    a9d84241ee1a78f8361add769193efd8

    SHA1

    b572157225af121413158b8e090116de267b547d

    SHA256

    bf74f22ed7f23f180580325b615b8196278cdc10a0eb89bd8a3150e057d416fb

    SHA512

    566c7d7ae5e70d3f321d684a2f9951926d43bf3e141b4a0d0a5bea41b8363ab1f50396548d4179b0fa615bb9db395f8ddd8d68eace930c20094f936a43496c37

  • memory/5892-132-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/5892-133-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/5892-135-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB