Analysis

  • max time kernel
    148s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    14/05/2024, 12:24

General

  • Target
    Ransomware.WannaCrypt0r.v1.exe
  • Size 224KB
  • Sample240514-plkbysfe49
  • SHA256 be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Users\Admin\Documents\!Please Read Me!.txt

  • 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: 15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1 Next, please find the decrypt software on your desktop, an executable file named "!WannaDecryptor!.exe". If it does not exsit, download the software from the address below. (You may need to disable your antivirus for a while.) rar password: wcry123 Run and follow the instructions! �
Wallets
  • 15zGqZCTcys6eCjDkE3DypCjXi6QWRV6V1

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Drops startup file 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 9 IoCs
  • 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 1 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Kills process with taskkill 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Ransomware.WannaCrypt0r.v1.exe
    "C:\Users\Admin\AppData\Local\Temp\Ransomware.WannaCrypt0r.v1.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2080
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c 303081715689502.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1996
      • C:\Windows\SysWOW64\cscript.exe
        cscript //nologo c.vbs
        3⤵
        • Loads dropped DLL
        PID:2896
    • C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
      !WannaDecryptor!.exe f
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:2724
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill /f /im MSExchange*
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:2304
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill /f /im Microsoft.Exchange.*
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:2040
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill /f /im sqlserver.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:1852
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill /f /im sqlwriter.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:2256
    • C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
      !WannaDecryptor!.exe c
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:2128
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c start /b !WannaDecryptor!.exe v
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1200
      • C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
        !WannaDecryptor!.exe v
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2276
        • 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:1720
          • C:\Windows\SysWOW64\vssadmin.exe
            vssadmin delete shadows /all /quiet
            5⤵
            • Interacts with shadow copies
            PID:288
          • C:\Windows\SysWOW64\Wbem\WMIC.exe
            wmic shadowcopy delete
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1764
    • C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
      !WannaDecryptor!.exe
      2⤵
      • Executes dropped EXE
      • Sets desktop wallpaper using registry
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:1744
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2068

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        !WannaDecryptor!.exe

        • Path C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
        • Size 236KB
        • SHA256 78e3f87f31688355c0f398317b2d87d803bd87ee3656c5a7c80f0561ec8606df
        • MD5 SHA1 SHA512 SSDEEP

        !WannaDecryptor!.exe.lnk

        • Path C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe.lnk
        • Size 925B
        • SHA256 e07cac58a5d47d3796e0e9cafbb32d3c726279eda073fbdce26694a619679cc0
        • MD5 SHA1 SHA512

        00000000.res

        • Path C:\Users\Admin\AppData\Local\Temp\00000000.res
        • Size 136B
        • SHA256 12eb416217b98358d988695d53fe7ecd2225b70549c13f07cf59251c81c3419e
        • MD5 SHA1 SHA512

        00000000.res

        • Path C:\Users\Admin\AppData\Local\Temp\00000000.res
        • Size 136B
        • SHA256 3c4bdcf9b969d969f34b348c09eae97a4c8cb1abbe723f2b3e6c6707c1103e3b
        • MD5 SHA1 SHA512

        00000000.res

        • Path C:\Users\Admin\AppData\Local\Temp\00000000.res
        • Size 136B
        • SHA256 a5d6179f47525cae275ae708755238668c3b0edfd5bab566c0b0ebf8b3cd7555
        • MD5 SHA1 SHA512

        303081715689502.bat

        • Path C:\Users\Admin\AppData\Local\Temp\303081715689502.bat
        • Size 336B
        • SHA256 73872a89440a2cba9d22bf4961c3d499ea2c72979c30c455f942374292fedadc
        • MD5 SHA1 SHA512

        c.vbs

        • Path C:\Users\Admin\AppData\Local\Temp\c.vbs
        • Size 219B
        • SHA256 0fb5039a2fe7e90cdf3f22140d7f2103f94689b15609efe0edcc8430dd772fc1
        • MD5 SHA1 SHA512

        c.wry

        • Path C:\Users\Admin\AppData\Local\Temp\c.wry
        • Size 628B
        • SHA256 f98673da1bcdcf51b07a177fcb75d9d262fa83733f8317c4808024b1fd85fb3e
        • MD5 SHA1 SHA512

        m.wry

        • Path C:\Users\Admin\AppData\Local\Temp\m.wry
        • Size 42KB
        • SHA256 402046ada270528c9ac38bbfa0152836fe30fb8e12192354e53b8397421430d9
        • MD5 SHA1 SHA512 SSDEEP

        !Please Read Me!.txt

        • Path C:\Users\Admin\Documents\!Please Read Me!.txt
        • Size 797B
        • SHA256 227082c719fd4394c1f2311a0877d8a302c5b092bcc49f853a5cf3d2945f42b0
        • MD5 SHA1 SHA512

        memory/2080-6-0x0000000010000000-0x0000000010012000-memory.dmp