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17-02-2022 18:50

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Analysis

  • max time kernel
    68s
  • max time network
    81s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    17-02-2022 18:50

General

  • Target

    important.exe

  • Size

    3.4MB

  • MD5

    84c82835a5d21bbcf75a61706d8ab549

  • SHA1

    5ff465afaabcbf0150d1a3ab2c2e74f3a4426467

  • SHA256

    ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa

  • SHA512

    90723a50c20ba3643d625595fd6be8dcf88d70ff7f4b4719a88f055d5b3149a4231018ea30d375171507a147e59f73478c0c27948590794554d031e7d54b7244

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\@[email protected]

Family

wannacry

Ransom Note
Q: What's wrong with my files? A: Ooops, your important files are encrypted. It means you will not be able to access them anymore until they are decrypted. If you follow our instructions, we guarantee that you can decrypt all your files quickly and safely! Let's start decrypting! Q: What do I do? A: First, you need to pay service fees for the decryption. Please send $300 worth of bitcoin to this bitcoin address: 12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw Next, please find an application file named "@[email protected]". It is the decrypt software. Run and follow the instructions! (You may need to disable your antivirus for a while.) Q: How can I trust? A: Don't worry about decryption. We will decrypt your files surely because nobody will trust us if we cheat users. * If you need our assistance, send a message by clicking <Contact Us> on the decryptor window. �
Wallets

12t9YDPgwueZ9NyMgw519p7AA8isjr6SMw

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Executes dropped EXE 1 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 5 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\important.exe
    "C:\Users\Admin\AppData\Local\Temp\important.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3912
    • C:\Windows\SysWOW64\attrib.exe
      attrib +h .
      2⤵
      • Views/modifies file attributes
      PID:2460
    • C:\Windows\SysWOW64\icacls.exe
      icacls . /grant Everyone:F /T /C /Q
      2⤵
      • Modifies file permissions
      PID:2564
    • C:\Users\Admin\AppData\Local\Temp\taskdl.exe
      taskdl.exe
      2⤵
      • Executes dropped EXE
      PID:1384
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c 177491645127556.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3788
      • C:\Windows\SysWOW64\cscript.exe
        cscript.exe //nologo m.vbs
        3⤵
          PID:3880
    • C:\Windows\system32\MusNotifyIcon.exe
      %systemroot%\system32\MusNotifyIcon.exe NotifyTrayIcon 0
      1⤵
      • Checks processor information in registry
      PID:2912
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k NetworkService -p
      1⤵
      • Modifies data under HKEY_USERS
      PID:3904

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3912-166-0x0000000010000000-0x0000000010010000-memory.dmp

      Filesize

      64KB