Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/11/2024, 19:47

General

  • Target

    10eab88a548196edc9a66157e801b2f0cf4ccadfa73859b4906642aacf696b49.exe

  • Size

    295KB

  • MD5

    cf3277c00d9724cf3f6b58ed5e53a8f1

  • SHA1

    cfc57b4745a39e20a4f0bee172e574ef8ed30379

  • SHA256

    10eab88a548196edc9a66157e801b2f0cf4ccadfa73859b4906642aacf696b49

  • SHA512

    7a7363b9ca351ab482413617b741a5bf51b305713aa44237c130169f4465e69b8106175661cf4f51432a949f8e9c850608af8fc6107274708a7f57a5c7687780

  • SSDEEP

    6144:k9//LL7OYk6EunLUDyJXOrY4VXRhDhl/Eu7mxKq9/:2/rDjLUDyJXOrnVXDDE8mxKo

Malware Config

Signatures

  • Detect Neshta payload 5 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.

  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\10eab88a548196edc9a66157e801b2f0cf4ccadfa73859b4906642aacf696b49.exe
    "C:\Users\Admin\AppData\Local\Temp\10eab88a548196edc9a66157e801b2f0cf4ccadfa73859b4906642aacf696b49.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:3460
    • C:\Users\Admin\AppData\Local\Temp\3582-490\10eab88a548196edc9a66157e801b2f0cf4ccadfa73859b4906642aacf696b49.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\10eab88a548196edc9a66157e801b2f0cf4ccadfa73859b4906642aacf696b49.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:4604
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4604 -s 456
        3⤵
        • Program crash
        PID:2732
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4604 -ip 4604
    1⤵
      PID:1168

    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\10eab88a548196edc9a66157e801b2f0cf4ccadfa73859b4906642aacf696b49.exe

      Filesize

      254KB

      MD5

      e8bf72dd834a1159e359b0263e671e1f

      SHA1

      939852e495ff331990d1ad87ef5a255ecf6bca53

      SHA256

      2288cfa44b117adc76aca0c3722b122a056dd922d512486a8b7047cfb5d87bcc

      SHA512

      55235fa100686e1bae5f62078122bee66a08646d89978259a25b1333346dddf4d1989f5edecef66634bf6167bcf3b4e3a157d0cb750d9f1254ae8f26cff29383

    • memory/3460-98-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3460-99-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3460-100-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/3460-102-0x0000000000400000-0x000000000041B000-memory.dmp

      Filesize

      108KB

    • memory/4604-12-0x0000000000400000-0x0000000000494000-memory.dmp

      Filesize

      592KB

    • memory/4604-14-0x0000000000400000-0x0000000000494000-memory.dmp

      Filesize

      592KB