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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
    17/11/2024, 19:23

General

  • Target

    d997bfdf3e557f77348736312e88f0f39d3cb359f8c6bce7bd82c73908bce045N.exe

  • Size

    465KB

  • MD5

    862e22ed53102f051e7c6d5e49305310

  • SHA1

    641876e8edeaca870ef15d986edeac78f664dd6e

  • SHA256

    d997bfdf3e557f77348736312e88f0f39d3cb359f8c6bce7bd82c73908bce045

  • SHA512

    626a01ae5fcd0d20e869675ff1b67080e4e6c935c3c42eab76fd3d1380dbe546eadf28ccf2cc70f4bfe05164c271a1353fce05c65c1530b7e5a6dbdaace50491

  • SSDEEP

    6144:Pul3L8RIqMmrQxYUDJzHRaR9bYLw5jMMYDct+Xp:k3LvJ81ORiNxMMYw+Xp

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 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\d997bfdf3e557f77348736312e88f0f39d3cb359f8c6bce7bd82c73908bce045N.exe
    "C:\Users\Admin\AppData\Local\Temp\d997bfdf3e557f77348736312e88f0f39d3cb359f8c6bce7bd82c73908bce045N.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:4056
    • C:\Users\Admin\AppData\Local\Temp\3582-490\d997bfdf3e557f77348736312e88f0f39d3cb359f8c6bce7bd82c73908bce045N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\d997bfdf3e557f77348736312e88f0f39d3cb359f8c6bce7bd82c73908bce045N.exe"
      2⤵
      • Executes dropped EXE
      PID:940

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\d997bfdf3e557f77348736312e88f0f39d3cb359f8c6bce7bd82c73908bce045N.exe

    Filesize

    424KB

    MD5

    afcb8d6a5e29e76d1e2d27be9b3ae783

    SHA1

    4a7220b55dfee2c2027a31cd3af7a9960b2cabee

    SHA256

    3ea5e09de323d4dc44d1a906e36d2c16146a07a42687972f55cedd16facd8c62

    SHA512

    bf02602fac0b566e6f157cb63ff9570ea7b90efe8cd55c187855bb7ffde8aa758afea1371ecb4855522455df3527c372c31a0ed911f1739896cc834c07836597

  • memory/4056-95-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4056-96-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4056-97-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4056-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB