Analysis

  • max time kernel
    95s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-12-2024 20:21

General

  • Target

    1fbf8b0babce9bb61fc19c8b5799968083ea9f12850444a57529c60136736b73.exe

  • Size

    83KB

  • MD5

    de6f90cc48c58d097a265dbaa1dba36d

  • SHA1

    e511dbd832eceaf655ab9242b92d6dd8393ecc6e

  • SHA256

    1fbf8b0babce9bb61fc19c8b5799968083ea9f12850444a57529c60136736b73

  • SHA512

    82910f5de7150d8bf4ce92a37bad629fa6aba45e2d0f915a122d15ba9e667de1495c3c508cd6178f33355fbb9649151dba8a64b21f3491d121f8ac3ccde0c540

  • SSDEEP

    1536:yxqjQ+P04wsZLnDrCvOKjCUJzWqacme0Z7HxwM7xxu:zr8WDrCNCUJccmekCMi

Malware Config

Signatures

  • 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\1fbf8b0babce9bb61fc19c8b5799968083ea9f12850444a57529c60136736b73.exe
    "C:\Users\Admin\AppData\Local\Temp\1fbf8b0babce9bb61fc19c8b5799968083ea9f12850444a57529c60136736b73.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:3428
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1fbf8b0babce9bb61fc19c8b5799968083ea9f12850444a57529c60136736b73.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1fbf8b0babce9bb61fc19c8b5799968083ea9f12850444a57529c60136736b73.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:548

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe

    Filesize

    2.4MB

    MD5

    d9e8a1fa55faebd36ed2342fedefbedd

    SHA1

    c25cc7f0035488de9c5df0121a09b5100e1c28e9

    SHA256

    bd7696911d75a9a35dfd125b24cb95003f1e9598592df47fa23a2568986a4a9a

    SHA512

    134644c68bd04536e9ea0a5da6e334d36b1ce8012a061fa6dabd31f85c16a1ac9eee8c40fee3d55f25c4d4edf0672de8ce204e344c800361cbcff092c09d7a33

  • C:\Users\Admin\AppData\Local\Temp\3582-490\1fbf8b0babce9bb61fc19c8b5799968083ea9f12850444a57529c60136736b73.exe

    Filesize

    42KB

    MD5

    e87be531c38faf76438bc6b5655d5fc2

    SHA1

    3f8a11bbbf0e502afaf676d896f9d72f3c00ff61

    SHA256

    cb239a03a2b47bb16da74835b1df502de6531d99d7317167269d3f27f6649d56

    SHA512

    ef396c736e6624e19870ca4498f7118df212f6ad8316c272a3fb033d2ed8c7df1dcba391b61fc3b3f3f1bf4863b9d4d19b91427bd4d31d3b7e4d00740e444ca8

  • memory/3428-93-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3428-94-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/3428-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB