Analysis

  • max time kernel
    150s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    11/05/2024, 03:06

General

  • Target
    be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844.exe
  • Size 224KB
  • Sample240511-dl92tscf39
  • 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\be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844.exe
    "C:\Users\Admin\AppData\Local\Temp\be22645c61949ad6a077373a7d6cd85e3fae44315632f161adc4c99d5a8e6844.exe"
    1⤵
    • Drops startup file
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:1736
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c 279151715396825.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2624
      • C:\Windows\SysWOW64\cscript.exe
        cscript //nologo c.vbs
        3⤵
        • Loads dropped DLL
        PID:2652
    • C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
      !WannaDecryptor!.exe f
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:2432
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill /f /im MSExchange*
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:796
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill /f /im Microsoft.Exchange.*
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:484
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill /f /im sqlserver.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:2396
    • C:\Windows\SysWOW64\taskkill.exe
      taskkill /f /im sqlwriter.exe
      2⤵
      • Kills process with taskkill
      • Suspicious use of AdjustPrivilegeToken
      PID:1428
    • C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
      !WannaDecryptor!.exe c
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetWindowsHookEx
      PID:2884
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /c start /b !WannaDecryptor!.exe v
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:544
      • C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
        !WannaDecryptor!.exe v
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2920
        • 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:296
          • C:\Windows\SysWOW64\vssadmin.exe
            vssadmin delete shadows /all /quiet
            5⤵
            • Interacts with shadow copies
            PID:2004
          • C:\Windows\SysWOW64\Wbem\WMIC.exe
            wmic shadowcopy delete
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2216
    • 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:1248
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:796

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 921B
        • SHA256 fc9c1c0894b390339042ebc36e130bb6953847d332cd5068e4b6a0b7327461bc
        • MD5 SHA1 SHA512

        00000000.res

        • Path C:\Users\Admin\AppData\Local\Temp\00000000.res
        • Size 136B
        • SHA256 561e2fc9dfa590b095c001725720a00e79d63c6162616c8c5cc70b0a1899cd30
        • MD5 SHA1 SHA512

        00000000.res

        • Path C:\Users\Admin\AppData\Local\Temp\00000000.res
        • Size 136B
        • SHA256 f491591351c9b3ec1765be6ada81b729b1e4a95c5c9019ef423b0664fe7445f3
        • MD5 SHA1 SHA512

        00000000.res

        • Path C:\Users\Admin\AppData\Local\Temp\00000000.res
        • Size 136B
        • SHA256 8b3aea1afcf5d6855d41c9b9a292d2e5b38334d6695f64fdd0f4796185aa8a2a
        • MD5 SHA1 SHA512

        279151715396825.bat

        • Path C:\Users\Admin\AppData\Local\Temp\279151715396825.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 0ad5995dfc891620740e13685240eebd327f640df517e16ef7eae41542ae13ba
        • 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/1736-6-0x0000000010000000-0x0000000010012000-memory.dmp