Analysis

  • max time kernel
    152s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    12-07-2022 05:30

General

  • Target

    4caa7a9e899522e38c33118ef2330da52a4d3d6bab1a576542c05deb1231654a.exe

  • Size

    428KB

  • MD5

    173634aad22b23dc3717ea91bb49127d

  • SHA1

    6f368671b55931634f8920c1dddb7b3791fcac89

  • SHA256

    4caa7a9e899522e38c33118ef2330da52a4d3d6bab1a576542c05deb1231654a

  • SHA512

    bdeffbbe4ef788c99cab417fa6e073315ffad47403a1e32c95b451dde38e56791ebc502287bf44e50ebc5603648109534e60d397dc2484ef1f1eca937a94069e

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2277218442-1199762539-2004043321-1000\_RECoVERY_+pbiku.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://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/7A1DDEAE22FAD065 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/7A1DDEAE22FAD065 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/7A1DDEAE22FAD065 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/7A1DDEAE22FAD065 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/7A1DDEAE22FAD065 http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/7A1DDEAE22FAD065 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/7A1DDEAE22FAD065 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/7A1DDEAE22FAD065
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/7A1DDEAE22FAD065

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/7A1DDEAE22FAD065

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/7A1DDEAE22FAD065

http://xlowfznrg4wf7dli.ONION/7A1DDEAE22FAD065

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\4caa7a9e899522e38c33118ef2330da52a4d3d6bab1a576542c05deb1231654a.exe
    "C:\Users\Admin\AppData\Local\Temp\4caa7a9e899522e38c33118ef2330da52a4d3d6bab1a576542c05deb1231654a.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1420
    • C:\Windows\tisdtgmuuljt.exe
      C:\Windows\tisdtgmuuljt.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:960
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1740
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\4CAA7A~1.EXE
      2⤵
      • Deletes itself
      PID:1764
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2000

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\tisdtgmuuljt.exe

    Filesize

    428KB

    MD5

    173634aad22b23dc3717ea91bb49127d

    SHA1

    6f368671b55931634f8920c1dddb7b3791fcac89

    SHA256

    4caa7a9e899522e38c33118ef2330da52a4d3d6bab1a576542c05deb1231654a

    SHA512

    bdeffbbe4ef788c99cab417fa6e073315ffad47403a1e32c95b451dde38e56791ebc502287bf44e50ebc5603648109534e60d397dc2484ef1f1eca937a94069e

  • C:\Windows\tisdtgmuuljt.exe

    Filesize

    428KB

    MD5

    173634aad22b23dc3717ea91bb49127d

    SHA1

    6f368671b55931634f8920c1dddb7b3791fcac89

    SHA256

    4caa7a9e899522e38c33118ef2330da52a4d3d6bab1a576542c05deb1231654a

    SHA512

    bdeffbbe4ef788c99cab417fa6e073315ffad47403a1e32c95b451dde38e56791ebc502287bf44e50ebc5603648109534e60d397dc2484ef1f1eca937a94069e

  • memory/960-60-0x0000000000000000-mapping.dmp

  • memory/960-68-0x00000000004B0000-0x0000000000535000-memory.dmp

    Filesize

    532KB

  • memory/1420-54-0x0000000076011000-0x0000000076013000-memory.dmp

    Filesize

    8KB

  • memory/1420-55-0x0000000000400000-0x00000000004AE000-memory.dmp

    Filesize

    696KB

  • memory/1420-59-0x0000000001D10000-0x0000000001D95000-memory.dmp

    Filesize

    532KB

  • memory/1740-70-0x0000000000000000-mapping.dmp

  • memory/1764-67-0x0000000000000000-mapping.dmp