Analysis

  • max time kernel
    145s
  • max time network
    139s
  • 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 05:57

General

  • Target

    eb73ba665465e57084e4c5dfd9ce52e5485019fad6fb14938f70d4d082cdff29.exe

  • Size

    600KB

  • MD5

    28b92a132aa24d08a62aebaa02197bf8

  • SHA1

    193da5ccbb4ea68c4554b5f596093b883614bb9d

  • SHA256

    eb73ba665465e57084e4c5dfd9ce52e5485019fad6fb14938f70d4d082cdff29

  • SHA512

    817d1ab5401c83b7aa7501b9bd493c4a488929aa7d1575bddfe37baa9bdd94d80c7857ebab9c843a07e160eb1edccd77dbe8fe77a30cc7a7bb805b654f5c6fc4

  • SSDEEP

    12288:4WiGrFOqwYHDTNFiLFXZykLJlMtgj6oA7:CEw8XPeuuG

Malware Config

Signatures

  • Detect Neshta payload 8 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\eb73ba665465e57084e4c5dfd9ce52e5485019fad6fb14938f70d4d082cdff29.exe
    "C:\Users\Admin\AppData\Local\Temp\eb73ba665465e57084e4c5dfd9ce52e5485019fad6fb14938f70d4d082cdff29.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:3544
    • C:\Users\Admin\AppData\Local\Temp\3582-490\eb73ba665465e57084e4c5dfd9ce52e5485019fad6fb14938f70d4d082cdff29.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\eb73ba665465e57084e4c5dfd9ce52e5485019fad6fb14938f70d4d082cdff29.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2012
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2012 -s 408
        3⤵
        • Program crash
        PID:4700
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2012 -ip 2012
    1⤵
      PID:3948

    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\eb73ba665465e57084e4c5dfd9ce52e5485019fad6fb14938f70d4d082cdff29.exe

      Filesize

      560KB

      MD5

      ce58f2b43991e944e1ae943e0ad3f625

      SHA1

      b0bcf5cd39ab256528ba433d1aeb760c932d41ff

      SHA256

      0d2d649d3bb025ced466ffaa1e47928a98608c4640e85794db05333516f0df05

      SHA512

      0e1ce8ea37335506aa2eb5735f0c452f78888bc80c11148cb430e4c5989c05870b2fe6e19d4817c58dbf4df9e0b6acae8c8891b143bd13c39ee99c11ea6f62d1

    • memory/3544-95-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3544-96-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3544-97-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3544-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3544-99-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3544-100-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3544-102-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB