Analysis

  • max time kernel
    151s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    24-07-2022 21:24

General

  • Target

    5797a4ccbf6e1e24fa85c7b514d82aff6b3774dfd8240efb8f00db61ab0ece1b.exe

  • Size

    383KB

  • MD5

    0ba94ab085f772674ff7593671403d88

  • SHA1

    72f4a7ae63b12e3383f68f0a1f1e4f0097a9a6dd

  • SHA256

    5797a4ccbf6e1e24fa85c7b514d82aff6b3774dfd8240efb8f00db61ab0ece1b

  • SHA512

    ca84d0c550a51bc28e9bd8cb21093acd929ea901d8fd3b5d1c80a172b799b1f75c9d002e8996d0c8e5dabe2cc3a733a3ec546a7b58457049ef703da825776fa6

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3762437355-3468409815-1164039494-1000\_RECOVERY_+ppfte.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/8042A3293EEFFFF1 2. http://tes543berda73i48fsdfsd.keratadze.at/8042A3293EEFFFF1 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/8042A3293EEFFFF1 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/8042A3293EEFFFF1 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/8042A3293EEFFFF1 http://tes543berda73i48fsdfsd.keratadze.at/8042A3293EEFFFF1 http://tt54rfdjhb34rfbnknaerg.milerteddy.com/8042A3293EEFFFF1 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/8042A3293EEFFFF1
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/8042A3293EEFFFF1

http://tes543berda73i48fsdfsd.keratadze.at/8042A3293EEFFFF1

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/8042A3293EEFFFF1

http://xlowfznrg4wf7dli.ONION/8042A3293EEFFFF1

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
  • 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 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\5797a4ccbf6e1e24fa85c7b514d82aff6b3774dfd8240efb8f00db61ab0ece1b.exe
    "C:\Users\Admin\AppData\Local\Temp\5797a4ccbf6e1e24fa85c7b514d82aff6b3774dfd8240efb8f00db61ab0ece1b.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1988
    • C:\Windows\ecotaiaufkmu.exe
      C:\Windows\ecotaiaufkmu.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:1260
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1752
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\5797A4~1.EXE
      2⤵
      • Deletes itself
      PID:884
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1392

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\ecotaiaufkmu.exe

    Filesize

    383KB

    MD5

    0ba94ab085f772674ff7593671403d88

    SHA1

    72f4a7ae63b12e3383f68f0a1f1e4f0097a9a6dd

    SHA256

    5797a4ccbf6e1e24fa85c7b514d82aff6b3774dfd8240efb8f00db61ab0ece1b

    SHA512

    ca84d0c550a51bc28e9bd8cb21093acd929ea901d8fd3b5d1c80a172b799b1f75c9d002e8996d0c8e5dabe2cc3a733a3ec546a7b58457049ef703da825776fa6

  • C:\Windows\ecotaiaufkmu.exe

    Filesize

    383KB

    MD5

    0ba94ab085f772674ff7593671403d88

    SHA1

    72f4a7ae63b12e3383f68f0a1f1e4f0097a9a6dd

    SHA256

    5797a4ccbf6e1e24fa85c7b514d82aff6b3774dfd8240efb8f00db61ab0ece1b

    SHA512

    ca84d0c550a51bc28e9bd8cb21093acd929ea901d8fd3b5d1c80a172b799b1f75c9d002e8996d0c8e5dabe2cc3a733a3ec546a7b58457049ef703da825776fa6

  • memory/1260-62-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1260-64-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1988-54-0x00000000769D1000-0x00000000769D3000-memory.dmp

    Filesize

    8KB

  • memory/1988-55-0x00000000005C0000-0x00000000005EE000-memory.dmp

    Filesize

    184KB

  • memory/1988-56-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1988-61-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB