Analysis

  • max time kernel
    149s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-11-2024 20:39

General

  • Target

    22356adc967c10d2b058a726d74dda8df84339cd32c74a53f1d3ff769d1b7cb1.exe

  • Size

    424KB

  • MD5

    1355b768df5cff01d698880b0b62fed4

  • SHA1

    51b74c13eeb2f619ad9c9dc7a13d3d2a5dc9c37c

  • SHA256

    22356adc967c10d2b058a726d74dda8df84339cd32c74a53f1d3ff769d1b7cb1

  • SHA512

    8ed61db2bce5acd5b5281ad8b3c76b935da31cdf0be2ae8643c42e498ff0c81d0802e29f0399f938f36979a163b810aebebab8aefd4ace60931f2ad4b2aded3a

  • SSDEEP

    6144:k9gbuXJCvIBCTBUKwuBSXGEEvI2WL379:7yXEIBCTBUKwuGf/BL3

Malware Config

Signatures

  • Detect Neshta payload 7 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).

  • Program crash 1 IoCs
  • 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\22356adc967c10d2b058a726d74dda8df84339cd32c74a53f1d3ff769d1b7cb1.exe
    "C:\Users\Admin\AppData\Local\Temp\22356adc967c10d2b058a726d74dda8df84339cd32c74a53f1d3ff769d1b7cb1.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:2508
    • C:\Users\Admin\AppData\Local\Temp\3582-490\22356adc967c10d2b058a726d74dda8df84339cd32c74a53f1d3ff769d1b7cb1.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\22356adc967c10d2b058a726d74dda8df84339cd32c74a53f1d3ff769d1b7cb1.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4528
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4528 -s 408
        3⤵
        • Program crash
        PID:632
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4528 -ip 4528
    1⤵
      PID:4380

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    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\22356adc967c10d2b058a726d74dda8df84339cd32c74a53f1d3ff769d1b7cb1.exe

      Filesize

      384KB

      MD5

      0d159d091c3d45fd293fa48b0c8990f4

      SHA1

      4464de1ef9306858fd5582c705200f2a7aa67875

      SHA256

      df016a68bd42be20c7fb4494158f2e002848a98b61b9e7aaacb119def43422c4

      SHA512

      f123080f15cb95b0de5a46c190c322e4ca69b959a1ff8d78f7f47716d594c49abc66b11eac85e97d700150e42becb6f7929fd961dbe84bfb6662da736b30b1fd

    • memory/2508-95-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2508-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2508-97-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2508-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2508-99-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/2508-101-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB