Resubmissions

13/04/2021, 15:20

210413-erpdk5746n10

07/04/2021, 20:23

210407-3w1xnp3sxx10

30/03/2021, 12:44

210330-rxae2gpzkn10

15/03/2021, 03:56

210315-v77jkyypdj10

12/03/2021, 14:39

210312-v91t4rfeva10

09/03/2021, 16:31

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08/03/2021, 18:16

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04/03/2021, 16:33

210304-wah1ytdaa610

04/03/2021, 15:26

210304-v2jw3mqwkj10

03/03/2021, 02:26

210303-eg4g1z4wd210

Analysis

  • max time kernel
    144s
  • max time network
    132s
  • platform
    windows10_x64
  • resource
    win10v200217
  • submitted
    10/03/2020, 12:31

General

  • Target
    ed01ebfbc9eb5bbea545af4d01bf5f1071661840480439c6e5babe8e080e41aa.exe
  • Size 3.4MB
  • Sample200310-xcl3dbmjyj
  • 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

  • Suspicious use of WriteProcessMemory 78 IoCs
  • Suspicious use of SetWindowsHookEx 9 IoCs
  • Loads dropped DLL 7 IoCs
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Adds Run entry to start application 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 53 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Modifies service 2 TTPs 4 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Executes dropped EXE 16 IoCs
  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Views/modifies file attributes 1 TTPs 1 IoCs
  • Drops startup file 2 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

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:3980
    • C:\Windows\SysWOW64\attrib.exe
      attrib +h .
      2⤵
      • Views/modifies file attributes
      PID:4040
    • C:\Windows\SysWOW64\icacls.exe
      icacls . /grant Everyone:F /T /C /Q
      2⤵
      • Modifies file permissions
      PID:4036
    • C:\Users\Admin\AppData\Local\Temp\taskdl.exe
      taskdl.exe
      2⤵
      • Executes dropped EXE
      PID:1992
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c 254261583847122.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3876
      • C:\Windows\SysWOW64\cscript.exe
        cscript.exe //nologo m.vbs
        3⤵
          PID:3784
      • C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Suspicious use of WriteProcessMemory
        • Suspicious use of SetWindowsHookEx
        • Executes dropped EXE
        PID:3464
        • C:\Users\Admin\AppData\Local\Temp\TaskData\Tor\taskhsvc.exe
          TaskData\Tor\taskhsvc.exe
          3⤵
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Executes dropped EXE
          PID:3880
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c start /b @[email protected] vs
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3496
        • C:\Users\Admin\AppData\Local\Temp\@[email protected]
          3⤵
          • Suspicious use of WriteProcessMemory
          • Suspicious use of SetWindowsHookEx
          • Executes dropped EXE
          PID:2156
          • 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:3760
            • C:\Windows\SysWOW64\vssadmin.exe
              vssadmin delete shadows /all /quiet
              5⤵
              • Interacts with shadow copies
              PID:416
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic shadowcopy delete
              5⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:3872
      • C:\Users\Admin\AppData\Local\Temp\taskse.exe
        taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        • Executes dropped EXE
        PID:2816
      • C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Suspicious use of SetWindowsHookEx
        • Sets desktop wallpaper using registry
        • Executes dropped EXE
        PID:3620
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "dzwzaxzeqy020" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:3688
        • C:\Windows\SysWOW64\reg.exe
          reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v "dzwzaxzeqy020" /t REG_SZ /d "\"C:\Users\Admin\AppData\Local\Temp\tasksche.exe\"" /f
          3⤵
          • Adds Run entry to start application
          • Modifies registry key
          PID:2316
      • C:\Users\Admin\AppData\Local\Temp\taskdl.exe
        taskdl.exe
        2⤵
        • Executes dropped EXE
        PID:3200
      • C:\Users\Admin\AppData\Local\Temp\taskdl.exe
        taskdl.exe
        2⤵
        • Executes dropped EXE
        PID:1460
      • C:\Users\Admin\AppData\Local\Temp\taskse.exe
        taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        • Executes dropped EXE
        PID:3676
      • C:\Users\Admin\AppData\Local\Temp\taskdl.exe
        taskdl.exe
        2⤵
        • Executes dropped EXE
        PID:2880
      • C:\Users\Admin\AppData\Local\Temp\taskse.exe
        taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        • Executes dropped EXE
        PID:584
      • C:\Users\Admin\AppData\Local\Temp\taskse.exe
        taskse.exe C:\Users\Admin\AppData\Local\Temp\@[email protected]
        2⤵
        • Suspicious use of AdjustPrivilegeToken
        • Executes dropped EXE
        PID:2904
      • C:\Users\Admin\AppData\Local\Temp\taskdl.exe
        taskdl.exe
        2⤵
        • Executes dropped EXE
        PID:3408
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      • Modifies service
      PID:776

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/3880-240-0x0000000003660000-0x0000000003661000-memory.dmp

          memory/3880-238-0x0000000003660000-0x0000000003661000-memory.dmp

          memory/3880-61-0x0000000003E60000-0x0000000003E61000-memory.dmp

          memory/3880-62-0x0000000003660000-0x0000000003661000-memory.dmp

          memory/3880-226-0x0000000003E60000-0x0000000003E61000-memory.dmp

          memory/3880-224-0x0000000003660000-0x0000000003661000-memory.dmp

          memory/3880-228-0x0000000003660000-0x0000000003661000-memory.dmp

          memory/3880-233-0x0000000003660000-0x0000000003661000-memory.dmp

          memory/3880-462-0x0000000003BC0000-0x0000000003BC1000-memory.dmp

          memory/3880-60-0x0000000003660000-0x0000000003661000-memory.dmp

          memory/3880-444-0x0000000003BC0000-0x0000000003BC1000-memory.dmp

          memory/3880-245-0x0000000003660000-0x0000000003661000-memory.dmp

          memory/3880-393-0x0000000003BC0000-0x0000000003BC1000-memory.dmp

          memory/3880-394-0x00000000043C0000-0x00000000043C1000-memory.dmp

          memory/3880-395-0x0000000003BC0000-0x0000000003BC1000-memory.dmp

          memory/3880-433-0x0000000003BC0000-0x0000000003BC1000-memory.dmp

          memory/3980-36-0x0000000010000000-0x0000000010010000-memory.dmp