Analysis

  • max time kernel
    150s
  • max time network
    155s
  • 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 22:02

General

  • Target

    3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.exe

  • Size

    400KB

  • MD5

    e802b64b73bba7cccde8881de7e07a86

  • SHA1

    23fa20d49e4fd57f95195b1c15c5d66e867212e2

  • SHA256

    3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203

  • SHA512

    37a696077c5ca4c119b24f10e32d5f0d41b12d4ee313babd56050a68104e409f3ada83ad5c10a35fd91a295d62f4d410df2ff34ada6c036a6526acd02e977a8e

  • SSDEEP

    3072:sr85Ct/VSrY7KwIoaCi5Z08laASQS5XfMXaZoT+IaKFfa+Hgl8NLyrzcjhMr85C:k94qNA/S5kqGT+dj+Hg0LyrzcjK9

Malware Config

Signatures

  • Detect Neshta payload 6 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\3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.exe
    "C:\Users\Admin\AppData\Local\Temp\3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.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:3392
    • C:\Users\Admin\AppData\Local\Temp\3582-490\3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4068
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4068 -s 240
        3⤵
        • Program crash
        PID:3616
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4068 -ip 4068
    1⤵
      PID:2140

    Network

    MITRE ATT&CK Enterprise v15

    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\3d8b8b84b47772a039f2462d647ba1bc7ef0fe7207a54747d5ed75ea31869203.exe

      Filesize

      360KB

      MD5

      d312ef88771314133933d9b53b076c67

      SHA1

      b7ffd961330991392ad653efcf1737bf01d09f6e

      SHA256

      1e3998abe5cb7480304787d5cf6d13877f9b43c928c3ff5248ff2974a83a1a90

      SHA512

      74d3189cd12f39852833df85713bdb0c5d647340d331bc40324f380a04bdbb272304e39d0b9759a83742468a800936108610e1f318d83c44c3d6d262e4419aab

    • memory/3392-95-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3392-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3392-97-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3392-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3392-100-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB