Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/07/2024, 01:37

General

  • Target
    5d26835be2cf4f08f2beeff301c06d05035d0a9ec3afacc71dff22813595c0b9.exe
  • Size 316KB
  • Sample240710-b1wrmsydmn
  • SHA256 5d26835be2cf4f08f2beeff301c06d05035d0a9ec3afacc71dff22813595c0b9
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Users\Admin\AppData\Local\Temp\!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 $200 worth of bitcoin to this bitcoin address: 1QAc9S5EmycqjzzWDc1yiWzr9jJLC8sLiY 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.) https://www.dropbox.com/s/c1gn29iy8erh1ks/m.rar?dl=1 rar password: wcry123 Run and follow the instructions! �
Wallets
  • 1QAc9S5EmycqjzzWDc1yiWzr9jJLC8sLiY

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 4 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).

  • Kills process with taskkill 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 49 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 39 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\5d26835be2cf4f08f2beeff301c06d05035d0a9ec3afacc71dff22813595c0b9.exe
    "C:\Users\Admin\AppData\Local\Temp\5d26835be2cf4f08f2beeff301c06d05035d0a9ec3afacc71dff22813595c0b9.exe"
    1⤵
    • Drops startup file
    • Adds Run key to start application
    • Sets desktop wallpaper using registry
    • Suspicious use of WriteProcessMemory
    PID:3268
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c 49901720575446.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2876
      • C:\Windows\SysWOW64\cscript.exe
        cscript //nologo c.vbs
        3⤵
          PID:2424
      • C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
        !WannaDecryptor!.exe f
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:4456
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im MSExchange*
        2⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2624
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im Microsoft.Exchange.*
        2⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2460
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im sqlserver.exe
        2⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:2464
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /im sqlwriter.exe
        2⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4532
      • C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
        !WannaDecryptor!.exe c
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:2836
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c start /b !WannaDecryptor!.exe v
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1976
        • C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
          !WannaDecryptor!.exe v
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:4724
          • 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:4896
            • C:\Windows\SysWOW64\Wbem\WMIC.exe
              wmic shadowcopy delete
              5⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:3852
      • C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe
        !WannaDecryptor!.exe
        2⤵
        • Executes dropped EXE
        • Sets desktop wallpaper using registry
        • Suspicious use of SetWindowsHookEx
        PID:5028
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3508

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          103621DE9CD5414CC2538780B4B75751

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751
          • Size 717B
          • SHA256 af2343382b88335eea72251ad84949e244ff54b6995063e24459a7216e9576b9
          • MD5 SHA1 SHA512

          B398B80134F72209547439DB21AB308D_A4CF52CCA82D7458083F7280801A3A04

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B398B80134F72209547439DB21AB308D_A4CF52CCA82D7458083F7280801A3A04
          • Size 471B
          • SHA256 ea5bf27142482bc76eb3053a2d129c0a96a1817abcfb76c599f5cc2df7c54192
          • MD5 SHA1 SHA512

          E573CDF4C6D731D56A665145182FD759_1D978D5EA8275AA72D1BFCD66AF4A751

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E573CDF4C6D731D56A665145182FD759_1D978D5EA8275AA72D1BFCD66AF4A751
          • Size 471B
          • SHA256 61b97d69e5e23ae9cb7cb7560ab67629d551236e409363169437c65932169727
          • MD5 SHA1 SHA512

          103621DE9CD5414CC2538780B4B75751

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751
          • Size 192B
          • SHA256 ec0591f711a3c952be01118384d2ab86138b940ccfccd4acdb2dba59a0ab4461
          • MD5 SHA1 SHA512

          B398B80134F72209547439DB21AB308D_A4CF52CCA82D7458083F7280801A3A04

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B398B80134F72209547439DB21AB308D_A4CF52CCA82D7458083F7280801A3A04
          • Size 400B
          • SHA256 6ef8cd0382e02060c321aa73a93e373bbc1cece64a5443057bc7062486bec2eb
          • MD5 SHA1 SHA512

          E573CDF4C6D731D56A665145182FD759_1D978D5EA8275AA72D1BFCD66AF4A751

          • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E573CDF4C6D731D56A665145182FD759_1D978D5EA8275AA72D1BFCD66AF4A751
          • Size 396B
          • SHA256 4ee3e167f1efae546bf42f8d661e8fdb2491e11ab0d2dc4b8dc8098e44871ff1
          • MD5 SHA1 SHA512

          !Please Read Me!.txt

          • Path C:\Users\Admin\AppData\Local\Temp\!Please Read Me!.txt
          • Size 849B
          • SHA256 90bb163d3350460dd30132a16e15d37bc1d5932af354cad83dbedb46275b6861
          • MD5 SHA1 SHA512

          !WannaDecryptor!.exe.lnk

          • Path C:\Users\Admin\AppData\Local\Temp\!WannaDecryptor!.exe.lnk
          • Size 1KB
          • SHA256 90be08167bd44caf0008b784394b1480174c9d44ff1a82ae3e54da2078d55d09
          • MD5 SHA1 SHA512

          00000000.res

          • Path C:\Users\Admin\AppData\Local\Temp\00000000.res
          • Size 136B
          • SHA256 372f82793c83d60e705d545379596cc701a28615fb0a1c7ff7212ba3c7b5f6c0
          • MD5 SHA1 SHA512

          00000000.res

          • Path C:\Users\Admin\AppData\Local\Temp\00000000.res
          • Size 136B
          • SHA256 8bd38bce2c4d50b8cfdb30cff88e0a5e65a71d6e8ea3b2ff83c29fd8e24f59d5
          • MD5 SHA1 SHA512

          49901720575446.bat

          • Path C:\Users\Admin\AppData\Local\Temp\49901720575446.bat
          • Size 336B
          • SHA256 73872a89440a2cba9d22bf4961c3d499ea2c72979c30c455f942374292fedadc
          • MD5 SHA1 SHA512

          b.wry

          • Path C:\Users\Admin\AppData\Local\Temp\b.wry
          • Size 1.4MB
          • SHA256 5054c415757f8a62abe0d61087d31e95065439d9ea1b364a6f207cdceaa24b7c
          • MD5 SHA1 SHA512 SSDEEP

          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 cb9c17c644db94d591b2da8baaea5c357fbd6074351550c0f660bde85d5ba422
          • MD5 SHA1 SHA512

          m.wry

          • Path C:\Users\Admin\AppData\Local\Temp\m.wry
          • Size 43KB
          • SHA256 e5373e95a201b3b676072752097ff5d851a0a34e1be4194ff0c52c33601e576a
          • MD5 SHA1 SHA512 SSDEEP

          u.wry

          • Path C:\Users\Admin\AppData\Local\Temp\u.wry
          • Size 236KB
          • SHA256 eeb9cd6a1c4b3949b2ff3134a77d6736b35977f951b9c7c911483b5caeb1c1fb
          • MD5 SHA1 SHA512 SSDEEP

          memory/3268-8-0x0000000010000000-0x000000001001C000-memory.dmp