Analysis

  • max time kernel
    30s
  • max time network
    31s
  • platform
    windows7_x64
  • resource
    win7-20241023-en
  • resource tags

    arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
  • submitted
    17-12-2024 03:12

General

  • Target

    7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.exe

  • Size

    349KB

  • MD5

    d1688bb079bb1cfdda7707c87c87edf0

  • SHA1

    10be0b4192e75a98416a013a8a96ecff28a521f6

  • SHA256

    7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75b

  • SHA512

    cef481f03241c2c38d2d7a6824a76b4559ae6d31966cd632fa551b7b2fabbe9e8b7dd89eda4543222dd470b6e15a032743ab8856cbde4a5bb4ae0e039442a300

  • SSDEEP

    3072:zr8WDrChywK6kYeK6oMfSuPb41Zy1nYlpmb5WY0B3SI1BC+Pd31fuUtPOVVP0j8M:PuS9KxM6urSK9U3oWlWVgahx4D9cO

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
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 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 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.exe
    "C:\Users\Admin\AppData\Local\Temp\7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.exe"
    1⤵
    • Loads dropped DLL
    • 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:1988
    • C:\Users\Admin\AppData\Local\Temp\3582-490\7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2504
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 932
        3⤵
          PID:1420

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\MSOCache\ALLUSE~1\{90140~1\DW20.EXE

      Filesize

      859KB

      MD5

      754309b7b83050a50768236ee966224f

      SHA1

      10ed7efc2e594417ddeb00a42deb8fd9f804ed53

      SHA256

      acd32dd903e5464b0ecd153fb3f71da520d2e59a63d4c355d9c1874c919d04e6

      SHA512

      e5aaddf62c08c8fcc1ae3f29df220c5c730a2efa96dd18685ee19f5a9d66c4735bb4416c4828033661990604669ed345415ef2dc096ec75e1ab378dd804b1614

    • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

      Filesize

      252KB

      MD5

      9e2b9928c89a9d0da1d3e8f4bd96afa7

      SHA1

      ec66cda99f44b62470c6930e5afda061579cde35

      SHA256

      8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

      SHA512

      2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

    • \Users\Admin\AppData\Local\Temp\3582-490\7c3a32d13903cdc5224113aa8bd4884a10d57381c2d9c6eb346ed13cc6baa75bN.exe

      Filesize

      309KB

      MD5

      2275c4bd6b85b2d05ac3a5f8e347e50e

      SHA1

      8b8da3211e2fe2984c7073b8dc1be0b2af20b4d9

      SHA256

      624984989ba18db9508a5311dd6a0c27b704776195a035ac4ba073aefe1a9a78

      SHA512

      fa52f7a4da08b7eb4c9cfd8d76fbfa0cccd9fc9674ab2aa686168ca5f74d50b2e3dc52aa38d3eadc1c2d7cb1fcd70ab820b8cbffd5ca07fabe2c8862ebece785

    • memory/1988-94-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/1988-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2504-10-0x000007FEF5BEE000-0x000007FEF5BEF000-memory.dmp

      Filesize

      4KB

    • memory/2504-20-0x000007FEF5930000-0x000007FEF62CD000-memory.dmp

      Filesize

      9.6MB

    • memory/2504-93-0x000007FEF5930000-0x000007FEF62CD000-memory.dmp

      Filesize

      9.6MB