Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    26-06-2022 03:33

General

  • Target

    36204b0a23be929eab9f2b335a85b81945649dec18e90b565ddce935bff03e0f.exe

  • Size

    344KB

  • MD5

    81feca42ed3aeb6425f595bbbca3be8b

  • SHA1

    55ddac273c69f1523094d04a49acf33c66f5848e

  • SHA256

    36204b0a23be929eab9f2b335a85b81945649dec18e90b565ddce935bff03e0f

  • SHA512

    8ce15d4d1a9fe08dcb3bf2719b97767b5dec4d72978930100ac9cb9c63b25ab0ff39e73e792e8b689f29370088b1befb0ae7f3a53c802b1bc6425a62ce1d4579

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-1819626980-2277161760-1023733287-1000\_RECOVERY_+jlkrg.txt

Family

teslacrypt

Ransom Note
NOT YOUR LANGUAGE? USE https://translate.google.com What happened to your files ? All of your files were protected by a strong encryption with AES More information about the encryption keys using AES can be found here: http://en.wikipedia.org/wiki/AES How did this happen ? !!! Specially for your PC was generated personal AES KEY, both public and private. !!! ALL YOUR FILES were encrypted with the public key, which has been transferred to your computer via the Internet. !!! Decrypting of your files is only possible with the help of the private key and decrypt program , which is on our Secret Server What do I do ? So, there are two ways you can choose: wait for a miracle and get your price doubled, or start obtaining BITCOIN NOW! , and restore your data easy way. If You have really valuable data, you better not waste your time, because there is no other way to get your files, except make a payment. For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: 1. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/A96AD1931A63F816 2. http://tes543berda73i48fsdfsd.keratadze.at/A96AD1931A63F816 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/A96AD1931A63F816 If for some reasons the addresses are not available, follow these steps: 1. Download and install tor-browser: http://www.torproject.org/projects/torbrowser.html.en 2. After a successful installation, run the browser 3. Type in the address bar: xlowfznrg4wf7dli.onion/A96AD1931A63F816 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/A96AD1931A63F816 http://tes543berda73i48fsdfsd.keratadze.at/A96AD1931A63F816 http://tt54rfdjhb34rfbnknaerg.milerteddy.com/A96AD1931A63F816 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/A96AD1931A63F816
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/A96AD1931A63F816

http://tes543berda73i48fsdfsd.keratadze.at/A96AD1931A63F816

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/A96AD1931A63F816

http://xlowfznrg4wf7dli.ONION/A96AD1931A63F816

Signatures

  • TeslaCrypt, AlphaCrypt

    Ransomware based on CryptoLocker. Shut down by the developers in 2016.

  • suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

    suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Executes dropped EXE 2 IoCs
  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 45 IoCs
  • Suspicious use of WriteProcessMemory 32 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\36204b0a23be929eab9f2b335a85b81945649dec18e90b565ddce935bff03e0f.exe
    "C:\Users\Admin\AppData\Local\Temp\36204b0a23be929eab9f2b335a85b81945649dec18e90b565ddce935bff03e0f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Users\Admin\AppData\Local\Temp\36204b0a23be929eab9f2b335a85b81945649dec18e90b565ddce935bff03e0f.exe
      "C:\Users\Admin\AppData\Local\Temp\36204b0a23be929eab9f2b335a85b81945649dec18e90b565ddce935bff03e0f.exe"
      2⤵
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:992
      • C:\Windows\ugpdbjuqnrmi.exe
        C:\Windows\ugpdbjuqnrmi.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1732
        • C:\Windows\ugpdbjuqnrmi.exe
          C:\Windows\ugpdbjuqnrmi.exe
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Drops file in Program Files directory
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          • System policy modification
          PID:592
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1004
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\36204B~1.EXE
        3⤵
        • Deletes itself
        PID:280
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1360

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\ugpdbjuqnrmi.exe

    Filesize

    344KB

    MD5

    81feca42ed3aeb6425f595bbbca3be8b

    SHA1

    55ddac273c69f1523094d04a49acf33c66f5848e

    SHA256

    36204b0a23be929eab9f2b335a85b81945649dec18e90b565ddce935bff03e0f

    SHA512

    8ce15d4d1a9fe08dcb3bf2719b97767b5dec4d72978930100ac9cb9c63b25ab0ff39e73e792e8b689f29370088b1befb0ae7f3a53c802b1bc6425a62ce1d4579

  • C:\Windows\ugpdbjuqnrmi.exe

    Filesize

    344KB

    MD5

    81feca42ed3aeb6425f595bbbca3be8b

    SHA1

    55ddac273c69f1523094d04a49acf33c66f5848e

    SHA256

    36204b0a23be929eab9f2b335a85b81945649dec18e90b565ddce935bff03e0f

    SHA512

    8ce15d4d1a9fe08dcb3bf2719b97767b5dec4d72978930100ac9cb9c63b25ab0ff39e73e792e8b689f29370088b1befb0ae7f3a53c802b1bc6425a62ce1d4579

  • C:\Windows\ugpdbjuqnrmi.exe

    Filesize

    344KB

    MD5

    81feca42ed3aeb6425f595bbbca3be8b

    SHA1

    55ddac273c69f1523094d04a49acf33c66f5848e

    SHA256

    36204b0a23be929eab9f2b335a85b81945649dec18e90b565ddce935bff03e0f

    SHA512

    8ce15d4d1a9fe08dcb3bf2719b97767b5dec4d72978930100ac9cb9c63b25ab0ff39e73e792e8b689f29370088b1befb0ae7f3a53c802b1bc6425a62ce1d4579

  • memory/280-73-0x0000000000000000-mapping.dmp

  • memory/592-92-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/592-91-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/592-90-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/592-86-0x00000000004288B4-mapping.dmp

  • memory/992-69-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/992-60-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/992-55-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/992-70-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/992-56-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/992-58-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/992-65-0x00000000004288B4-mapping.dmp

  • memory/992-74-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/992-64-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/992-62-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/992-68-0x0000000075FE1000-0x0000000075FE3000-memory.dmp

    Filesize

    8KB

  • memory/1004-93-0x0000000000000000-mapping.dmp

  • memory/1732-71-0x0000000000000000-mapping.dmp

  • memory/2028-66-0x0000000000240000-0x0000000000243000-memory.dmp

    Filesize

    12KB

  • memory/2028-54-0x0000000000240000-0x0000000000243000-memory.dmp

    Filesize

    12KB