Analysis

  • max time kernel
    153s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-04-2024 01:13

General

  • Target

    a2ef9be9b9d9fb6f1a9f327b56f32a9885ffa6da639fe721f3bf893ddd45ccaf.exe

  • Size

    955KB

  • MD5

    f099a165d0ecbee2f6b55870be2c8474

  • SHA1

    d3b0b819be36ec96cf7c318251eb378b6c19683b

  • SHA256

    a2ef9be9b9d9fb6f1a9f327b56f32a9885ffa6da639fe721f3bf893ddd45ccaf

  • SHA512

    6c18bdd0563b5f2b3b2714509b03c56b611c798cb51550ef08dc1c4a2a18e26afca4248a1873c63a87a6a162d91341debbc811e8b92de6b8e0ccf9d3cf088a63

  • SSDEEP

    12288:ZN46O0tbCdFTkYz6GfpTqBVCX/ppQFYXi/bwMgEjW0vuaGO+:9nYzqCf4YS/b3tK0WJO+

Malware Config

Signatures

  • Detect Neshta payload 14 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • 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 2 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).

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a2ef9be9b9d9fb6f1a9f327b56f32a9885ffa6da639fe721f3bf893ddd45ccaf.exe
    "C:\Users\Admin\AppData\Local\Temp\a2ef9be9b9d9fb6f1a9f327b56f32a9885ffa6da639fe721f3bf893ddd45ccaf.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1364
    • C:\Users\Admin\AppData\Local\Temp\3582-490\a2ef9be9b9d9fb6f1a9f327b56f32a9885ffa6da639fe721f3bf893ddd45ccaf.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\a2ef9be9b9d9fb6f1a9f327b56f32a9885ffa6da639fe721f3bf893ddd45ccaf.exe"
      2⤵
      • Executes dropped EXE
      PID:316

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe

    Filesize

    2.4MB

    MD5

    8ffc3bdf4a1903d9e28b99d1643fc9c7

    SHA1

    919ba8594db0ae245a8abd80f9f3698826fc6fe5

    SHA256

    8268d3fefe8ca96a25a73690d14bacf644170ab5e9e70d2f8eeb350a4c83f9f6

    SHA512

    0b94ead97374d74eaee87e7614ddd3911d2cf66d4c49abbfd06b02c03e5dd56fd00993b4947e8a4bcd9d891fa39cab18cc6b61efc7d0812e91eb3aea9cd1a427

  • C:\Users\Admin\AppData\Local\Temp\3582-490\a2ef9be9b9d9fb6f1a9f327b56f32a9885ffa6da639fe721f3bf893ddd45ccaf.exe

    Filesize

    914KB

    MD5

    da6464b32df0d729a4f5bd26ce92f728

    SHA1

    ded9562b4b715c35bd24abdd03d1425b7d3c98c4

    SHA256

    3230ac5bac442ea9dd53187624027750ecdcb4c94b045dc7994f75fc0854a3a1

    SHA512

    f035168875bdcd2d3b6398eb50f5ef76e99c3ef46c50fde40d8c334e811fd6fa0cd9f7c79292e8a79b790d0e562e850d33218d63a37fed5dd725c70dd3e9e652

  • memory/1364-102-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-54-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-55-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-101-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-44-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-103-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-104-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-105-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-106-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-107-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-108-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-110-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/1364-111-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB