Analysis

  • max time kernel
    93s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18-11-2024 06:03

General

  • Target

    88d9059d13b543f890b3e6d945772f63b29bdf0345c94365145eb5c827f0f768N.exe

  • Size

    82KB

  • MD5

    a8817ce4ae31fe18f20e8120a7292570

  • SHA1

    b019b0e5fe8d92916d8120ed9bfcae12f46c7393

  • SHA256

    88d9059d13b543f890b3e6d945772f63b29bdf0345c94365145eb5c827f0f768

  • SHA512

    308cf0f15aecf1edd8430db3f6e859857ebd9be8813fbe6e7885cd58f8a0c75cd095db46ba56339fa014a9888741289885b20b8c53c2dfdc8e5fafcd02fff5fc

  • SSDEEP

    1536:JxqjQ+P04wsmJCSt3I9AATBRoR/J+8yG2J:sr85CNTBRoR/J+8yNJ

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 use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\88d9059d13b543f890b3e6d945772f63b29bdf0345c94365145eb5c827f0f768N.exe
    "C:\Users\Admin\AppData\Local\Temp\88d9059d13b543f890b3e6d945772f63b29bdf0345c94365145eb5c827f0f768N.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:224
    • C:\Users\Admin\AppData\Local\Temp\3582-490\88d9059d13b543f890b3e6d945772f63b29bdf0345c94365145eb5c827f0f768N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\88d9059d13b543f890b3e6d945772f63b29bdf0345c94365145eb5c827f0f768N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:4996

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\88d9059d13b543f890b3e6d945772f63b29bdf0345c94365145eb5c827f0f768N.exe

    Filesize

    41KB

    MD5

    dfc8904b5f2035654db1635dc1580a19

    SHA1

    73ca955f0635bbbaffe23935b0cdc3bcef34c02b

    SHA256

    2699bd2c13ee7fcadb36699dcc4b3115f59268ce2fb0d9b2fc153936d1ea534e

    SHA512

    e40a13064ae506c2e39f7c2cdf812689aff0250730d312df649f2ca6afa6c8f030083f00f0ee27bce975a375e96d40b36cd3292653eca16e0d792aff9616c1bf

  • memory/224-99-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/224-101-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/224-102-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/224-104-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/4996-12-0x0000000073A8E000-0x0000000073A8F000-memory.dmp

    Filesize

    4KB

  • memory/4996-13-0x0000000000780000-0x000000000078C000-memory.dmp

    Filesize

    48KB

  • memory/4996-15-0x0000000073A80000-0x0000000074230000-memory.dmp

    Filesize

    7.7MB

  • memory/4996-100-0x0000000073A80000-0x0000000074230000-memory.dmp

    Filesize

    7.7MB