Analysis

  • max time kernel
    102s
  • max time network
    93s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220721-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/07/2022, 22:29

General

  • Target
    5e3385a20d41acedb5a3b93b5a8c76a5.exe
  • Size 620KB
  • Sample220726-2d749sadb6
  • SHA256 bb671dbc4bb59548908a3bb9b9bb67c07e059ae50b2d347d04e7786a2e4527e5
  • MD5 SHA1 SHA512

Malware Config

Signatures

  • Detect Neshta payload 6 IoCs
  • Modifies system executable filetype association 2 TTPs 1 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.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Suspicious use of SetThreadContext 1 IoCs
  • 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). Likely ransomware behaviour.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5e3385a20d41acedb5a3b93b5a8c76a5.exe
    "C:\Users\Admin\AppData\Local\Temp\5e3385a20d41acedb5a3b93b5a8c76a5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3860
    • C:\Users\Admin\AppData\Local\Temp\5e3385a20d41acedb5a3b93b5a8c76a5.exe
      "{path}"
      2⤵
      • Modifies system executable filetype association
      • Checks computer location settings
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies registry class
      PID:5080

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/3860-130-0x0000000000520000-0x00000000005C2000-memory.dmp

        memory/3860-131-0x00000000054B0000-0x0000000005A54000-memory.dmp

        memory/3860-132-0x0000000004FA0000-0x0000000005032000-memory.dmp

        memory/3860-133-0x0000000005040000-0x00000000050DC000-memory.dmp

        memory/3860-134-0x0000000004F70000-0x0000000004F7A000-memory.dmp

        memory/5080-136-0x0000000000400000-0x000000000042B000-memory.dmp

        memory/5080-137-0x0000000000400000-0x000000000042B000-memory.dmp

        memory/5080-138-0x0000000000400000-0x000000000042B000-memory.dmp

        memory/5080-139-0x0000000000400000-0x000000000042B000-memory.dmp

        memory/5080-140-0x0000000000400000-0x000000000042B000-memory.dmp

        memory/5080-141-0x0000000000400000-0x000000000042B000-memory.dmp