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Analysis

  • max time kernel
    119s
  • max time network
    114s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    19/09/2024, 06:46

General

  • Target

    b21f02570a17a71023ba084650ca0b4b3c95f262b8177b56370bba159981a136N.exe

  • Size

    296KB

  • MD5

    e576406ef024a18c2abc2cb079358020

  • SHA1

    3ba0baed6e6659def31c9cac7abf8ff29bcdb082

  • SHA256

    b21f02570a17a71023ba084650ca0b4b3c95f262b8177b56370bba159981a136

  • SHA512

    f514be88398bcc8a1af03b2a2fe10f398df7d44ebf0e404be6eecbf92133a769c09c46713f87550c33af5c7a04f168cb77359a74886ff48aae845a618804b721

  • SSDEEP

    3072:/KYm9FcMIJqOifVqfN8xfu3YOUtCPgCr0bM2C2VxZx89bRsVM8fnkTgFGgzsUizG:/K1oinG0s0bM2CEDV+8fnkpUut8

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 48 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b21f02570a17a71023ba084650ca0b4b3c95f262b8177b56370bba159981a136N.exe
    "C:\Users\Admin\AppData\Local\Temp\b21f02570a17a71023ba084650ca0b4b3c95f262b8177b56370bba159981a136N.exe"
    1⤵
    • Modifies visiblity of hidden/system files in Explorer
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Users\Admin\kaapa.exe
      "C:\Users\Admin\kaapa.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:3460

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\kaapa.exe

    Filesize

    296KB

    MD5

    156cff9abb6cdb27101b7e16c9ce0b25

    SHA1

    61d7354a4e0355656cecb7b71da91479a8312b4e

    SHA256

    39ecfcf804302bdc030bc72f0286da5139a96e340908dec4dc1af5731b789f97

    SHA512

    99ddfe58e09a07d01c189b2c4490205a063f09ba8a75842ef9d44d4fd8f30e3db5f098ce1988da247ab0536f415ef56df197732ddb8fc6bc01472ed51ea76ef1