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Analysis

  • max time kernel
    171s
  • max time network
    175s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25/06/2022, 09:28

General

  • Target

    39994837fd8026fb9f8ee2d825370e0f1858c77d47d19539dfb4b505a4c6303a.exe

  • Size

    383KB

  • MD5

    7df9ceeb82676d57160f4a49217f2daa

  • SHA1

    389d69dd6c58caedd95c8a634aa85be0c7b1ee76

  • SHA256

    39994837fd8026fb9f8ee2d825370e0f1858c77d47d19539dfb4b505a4c6303a

  • SHA512

    190e4637f4eef5791fe249292b2a14ef45d05a4e1f882fdde0a9526b0ef215cd1f5b5febca2f696668d8d9f63b74bdaea1d76e766481def6cab1befefbf4a1a4

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-1083475884-596052423-1669053738-1000\_RECOVERY_+sevfq.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/2775A89FADD46950 2. http://tes543berda73i48fsdfsd.keratadze.at/2775A89FADD46950 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/2775A89FADD46950 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/2775A89FADD46950 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/2775A89FADD46950 http://tes543berda73i48fsdfsd.keratadze.at/2775A89FADD46950 http://tt54rfdjhb34rfbnknaerg.milerteddy.com/2775A89FADD46950 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/2775A89FADD46950
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/2775A89FADD46950

http://tes543berda73i48fsdfsd.keratadze.at/2775A89FADD46950

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/2775A89FADD46950

http://xlowfznrg4wf7dli.ONION/2775A89FADD46950

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 1 IoCs
  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 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 12 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\39994837fd8026fb9f8ee2d825370e0f1858c77d47d19539dfb4b505a4c6303a.exe
    "C:\Users\Admin\AppData\Local\Temp\39994837fd8026fb9f8ee2d825370e0f1858c77d47d19539dfb4b505a4c6303a.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:780
    • C:\Windows\hownnhdavawv.exe
      C:\Windows\hownnhdavawv.exe
      2⤵
      • 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:1580
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:320
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\399948~1.EXE
      2⤵
      • Deletes itself
      PID:1684
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1068

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\hownnhdavawv.exe

    Filesize

    383KB

    MD5

    7df9ceeb82676d57160f4a49217f2daa

    SHA1

    389d69dd6c58caedd95c8a634aa85be0c7b1ee76

    SHA256

    39994837fd8026fb9f8ee2d825370e0f1858c77d47d19539dfb4b505a4c6303a

    SHA512

    190e4637f4eef5791fe249292b2a14ef45d05a4e1f882fdde0a9526b0ef215cd1f5b5febca2f696668d8d9f63b74bdaea1d76e766481def6cab1befefbf4a1a4

  • C:\Windows\hownnhdavawv.exe

    Filesize

    383KB

    MD5

    7df9ceeb82676d57160f4a49217f2daa

    SHA1

    389d69dd6c58caedd95c8a634aa85be0c7b1ee76

    SHA256

    39994837fd8026fb9f8ee2d825370e0f1858c77d47d19539dfb4b505a4c6303a

    SHA512

    190e4637f4eef5791fe249292b2a14ef45d05a4e1f882fdde0a9526b0ef215cd1f5b5febca2f696668d8d9f63b74bdaea1d76e766481def6cab1befefbf4a1a4

  • memory/780-54-0x0000000076531000-0x0000000076533000-memory.dmp

    Filesize

    8KB

  • memory/780-55-0x00000000003C0000-0x00000000003EE000-memory.dmp

    Filesize

    184KB

  • memory/780-56-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/780-60-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/780-63-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1580-61-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1580-65-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB