Analysis

  • max time kernel
    94s
  • max time network
    95s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26-12-2024 13:43

General

  • Target

    55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe

  • Size

    669KB

  • MD5

    f5fc56030f11830ef501772cf4746050

  • SHA1

    4ca94696dfdbd766c66d44216e91350174ba82aa

  • SHA256

    55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3

  • SHA512

    39dbfb40730adbb5951ba88db229ef27286a8b119981ca5436337cb3dbb696703dfc8b46f23a1a5551f3ef0b7dd6c39e5cbdee1a1e974299e9a7716558b93dca

  • SSDEEP

    12288:VmgqnIZuYfCYqFet4CovkM7eoHnEeDawvVUdX9GkrjdnW:VWnIZuMCxezot75HZhvVwXr1W

Malware Config

Signatures

  • Detect Neshta payload 4 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 2 IoCs
  • Loads dropped DLL 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.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • 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 3 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 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe
    "C:\Users\Admin\AppData\Local\Temp\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.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:2804
    • C:\Users\Admin\AppData\Local\Temp\3582-490\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:316
      • C:\Windows\Temp\{400F5089-2DB3-4ED8-9915-497F649E32EC}\.cr\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe
        "C:\Windows\Temp\{400F5089-2DB3-4ED8-9915-497F649E32EC}\.cr\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe" -burn.clean.room="C:\Users\Admin\AppData\Local\Temp\3582-490\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe" -burn.filehandle.attached=556 -burn.filehandle.self=692
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4108

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\55e41b95a7cf01e3b2bcdfd80adc658009ed77370e8816e8ce9ea753addc1cf3N.exe

    Filesize

    628KB

    MD5

    4d4f243864130822f53239481727f215

    SHA1

    f3a065eb35437246b72a7c95726efcdfd49c4265

    SHA256

    14d356216ef6ae99043481c65c461a53b492c55eb23ef6b82ac8c961a68f0974

    SHA512

    71e31ad054c99bdfa87585ad141b05f3d967ec9241658fbfc8a69ed6645d049b154f871162d1a397f853d30d6def6a7f65ab69e096a8e976c259a21871e325b6

  • C:\Windows\Temp\{8C67BEE0-7401-448E-B03A-932A5C54B3F0}\.ba\logo.png

    Filesize

    12KB

    MD5

    84709eb22e4b05688067699ca9b0d322

    SHA1

    7c3381d8b6a58087cda95577cc2d25e7aa2c21d8

    SHA256

    c8e23a42e04fbd73f5f66f3b9f2ba34a777bc4769c413a0f78335a4e757baad5

    SHA512

    04de70b7317ee1cbde73ac0fe84bd70983cf0ff7e769e5f9626c69eaa6e3e9724c95b14ccb7a5478ee639848d3f8c98e4dec599cc5e33ad71de638da589ba319

  • C:\Windows\Temp\{8C67BEE0-7401-448E-B03A-932A5C54B3F0}\.ba\wixstdba.dll

    Filesize

    215KB

    MD5

    f68f43f809840328f4e993a54b0d5e62

    SHA1

    01da48ce6c81df4835b4c2eca7e1d447be893d39

    SHA256

    e921f69b9fb4b5ad4691809d06896c5f1d655ab75e0ce94a372319c243c56d4e

    SHA512

    a7a799ecf1784fb5e8cd7191bf78b510ff5b07db07363388d7b32ed21f4fddc09e34d1160113395f728c0f4e57d13768a0350dbdb207d9224337d2153dc791e1

  • memory/2804-142-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2804-177-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2804-179-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB