Analysis

  • max time kernel
    96s
  • max time network
    99s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-12-2024 17:55

General

  • Target

    492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.exe

  • Size

    118KB

  • MD5

    55978849ec431982791abc8907495580

  • SHA1

    e2016fa2c6dde0ef6ab8ab5ca153195047cccd0a

  • SHA256

    492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016e

  • SHA512

    c1f71b6713a1115f172120f12b8c79a2471efc12aff2031be3178ba0d9a71a8bdc5107f0c27ebd8842856b130ed1452ec49fc0fdaefeb6582a08ed394d6b6d07

  • SSDEEP

    1536:JxqjQ+P04wsmJCQIEZ+qi9URcLJYetKkHhaFlS/ktO2wwkfBlNrKnJAy5WZBIFX:sr85CYZLS95tKkHhaFlS/VtprQXFX

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 3 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 5 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 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.exe
    "C:\Users\Admin\AppData\Local\Temp\492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.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:2384
    • C:\Users\Admin\AppData\Local\Temp\3582-490\492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3436
      • C:\Users\Admin\AppData\Local\Temp\nstAAF5.tmp\nstAB06.tmp
        nstAB06.tmp /DOIT
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1760
        • C:\Users\Admin\AppData\Local\Temp\nstAAF5.tmp\A~NSISu_.tmp
          "C:\Users\Admin\AppData\Local\Temp\nstAAF5.tmp\A~NSISu_.tmp" /DOIT _=C:\Users\Admin\AppData\Local\Temp\nstAAF5.tmp
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4200
          • C:\Windows\SysWOW64\CMD.EXE
            CMD.EXE /C "C:\Users\Admin\AppData\Local\Temp\nstDD50.bat"
            5⤵
            • System Location Discovery: System Language Discovery
            PID:5040

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\492968d8d480902d5f337a26b2f1e8675e0cc396172055ebbb812c9fc1d7016eN.exe

    Filesize

    78KB

    MD5

    b1812d2c16d9adddf4642ace51f3e06a

    SHA1

    a2ca3277fa890ffee4d9294441d5e052e30ab2e8

    SHA256

    eab8921ebe73c16aa8534185cf5793bf47350591549c5d84d57e2e0f716c0911

    SHA512

    3c1a3877d75e58f96aea3107b576dfd01204f2fb3f3fd346df387a146a7a75e2439c2a65e9f66ffa94b8a42d2540abc2a6de6717a067c2cf9ac2dc6e30cb7038

  • C:\Users\Admin\AppData\Local\Temp\nstDD50.bat

    Filesize

    277B

    MD5

    bb934843b8bcda9cba2a3eef3f6f115c

    SHA1

    97e7af6be99d3d10be512307bc55d526d5c6a3a1

    SHA256

    688d7440930b67135f8fb056bd970050ddd119851ae9276eb461d152ba6d8e55

    SHA512

    e37e58d7f47dfa16bb365639eade2cecd6a65c7f1a70714edbe63bd965d656d0b6a07e4ab83c69c6850eb95b15deedab33c8708cfb63508b7875f4c83e664531

  • memory/2384-100-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2384-103-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2384-105-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB