Analysis

  • max time kernel
    140s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-10-2024 04:42

General

  • Target

    c88b83dedd36b8465e80957b5bb34c2dac6b96b25945ad345a44ebfadee104b5.exe

  • Size

    2.6MB

  • MD5

    f4f82190e99264985438423e80a85d71

  • SHA1

    1f4b6955d80985b94c4126b5e634a110b8617889

  • SHA256

    c88b83dedd36b8465e80957b5bb34c2dac6b96b25945ad345a44ebfadee104b5

  • SHA512

    1ab7a266a38784121fa53b83b73dc078cb3b25c7fb45ac0a235d9e6985df2153662606b6102114c1776f7991963d47c72a51c3a4878ef1e23ab9b3781c411101

  • SSDEEP

    49152:EQnoZzbQCfknw2Wllx7dP54O7p9kXpq8neAAYab5sTUyaOpWy/LTLvUs:EAoZzcCfkvWn354mp9kXjneAAYa/UTLv

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.

  • 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 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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c88b83dedd36b8465e80957b5bb34c2dac6b96b25945ad345a44ebfadee104b5.exe
    "C:\Users\Admin\AppData\Local\Temp\c88b83dedd36b8465e80957b5bb34c2dac6b96b25945ad345a44ebfadee104b5.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:4568
    • C:\Users\Admin\AppData\Local\Temp\3582-490\c88b83dedd36b8465e80957b5bb34c2dac6b96b25945ad345a44ebfadee104b5.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\c88b83dedd36b8465e80957b5bb34c2dac6b96b25945ad345a44ebfadee104b5.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2028

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\c88b83dedd36b8465e80957b5bb34c2dac6b96b25945ad345a44ebfadee104b5.exe

    Filesize

    2.5MB

    MD5

    c2d9219649f93d2366f3a24a595ea3ab

    SHA1

    4c4ce354b1b927ef0ce8eadac1def5e2c18504e0

    SHA256

    4ceccbe3430b4e64ebb1625e8953244e3f3e845b4a563465039c9eaab37ba17f

    SHA512

    57d14c1275c7c9183f0155a74675b941b44bcd48eb7a472af318a434de0610b5ec748548c1c5b35620bffa0bc4aaf146d30659c85ee22ba48bba5818cdfca5d8

  • memory/2028-12-0x00000000028F0000-0x00000000028F1000-memory.dmp

    Filesize

    4KB

  • memory/2028-13-0x0000000000405000-0x0000000000406000-memory.dmp

    Filesize

    4KB

  • memory/2028-15-0x0000000000400000-0x00000000006D1000-memory.dmp

    Filesize

    2.8MB

  • memory/4568-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4568-100-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4568-101-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4568-103-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB