Analysis

  • max time kernel
    151s
  • max time network
    134s
  • platform
    windows7_x64
  • resource
    win7-20220715-en
  • resource tags

    arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
  • submitted
    20-07-2022 20:26

General

  • Target

    4da541578caf4cc3336ffb6fef30997deb1f7f6ab9bb38a2be58e014cc7b58a3.exe

  • Size

    367KB

  • MD5

    4730bcca5ec3e6a057604dc02d289236

  • SHA1

    fe421fa51dc1ca9133189f6afe7bd410238971b7

  • SHA256

    4da541578caf4cc3336ffb6fef30997deb1f7f6ab9bb38a2be58e014cc7b58a3

  • SHA512

    f84d3c59fa448db14ef6f247adc9f1785a5f9149701e6faa9aeb64298a30245694faf4aa428e0396b4dd418a164c7564a9de7ab20c1ae669497422ee187b1584

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3440072777-2118400376-1759599358-1000\_RECOVERY_+ctmct.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/312DA1BF2D82C13 2. http://tes543berda73i48fsdfsd.keratadze.at/312DA1BF2D82C13 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/312DA1BF2D82C13 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/312DA1BF2D82C13 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/312DA1BF2D82C13 http://tes543berda73i48fsdfsd.keratadze.at/312DA1BF2D82C13 http://tt54rfdjhb34rfbnknaerg.milerteddy.com/312DA1BF2D82C13 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/312DA1BF2D82C13
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/312DA1BF2D82C13

http://tes543berda73i48fsdfsd.keratadze.at/312DA1BF2D82C13

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/312DA1BF2D82C13

http://xlowfznrg4wf7dli.ONION/312DA1BF2D82C13

Signatures

  • TeslaCrypt, AlphaCrypt

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

  • 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\4da541578caf4cc3336ffb6fef30997deb1f7f6ab9bb38a2be58e014cc7b58a3.exe
    "C:\Users\Admin\AppData\Local\Temp\4da541578caf4cc3336ffb6fef30997deb1f7f6ab9bb38a2be58e014cc7b58a3.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1576
    • C:\Users\Admin\AppData\Local\Temp\4da541578caf4cc3336ffb6fef30997deb1f7f6ab9bb38a2be58e014cc7b58a3.exe
      "C:\Users\Admin\AppData\Local\Temp\4da541578caf4cc3336ffb6fef30997deb1f7f6ab9bb38a2be58e014cc7b58a3.exe"
      2⤵
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1928
      • C:\Windows\vbwwjcpnxucn.exe
        C:\Windows\vbwwjcpnxucn.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1316
        • C:\Windows\vbwwjcpnxucn.exe
          C:\Windows\vbwwjcpnxucn.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:2040
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:764
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\4DA541~1.EXE
        3⤵
        • Deletes itself
        PID:240
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:820

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\vbwwjcpnxucn.exe

    Filesize

    367KB

    MD5

    4730bcca5ec3e6a057604dc02d289236

    SHA1

    fe421fa51dc1ca9133189f6afe7bd410238971b7

    SHA256

    4da541578caf4cc3336ffb6fef30997deb1f7f6ab9bb38a2be58e014cc7b58a3

    SHA512

    f84d3c59fa448db14ef6f247adc9f1785a5f9149701e6faa9aeb64298a30245694faf4aa428e0396b4dd418a164c7564a9de7ab20c1ae669497422ee187b1584

  • C:\Windows\vbwwjcpnxucn.exe

    Filesize

    367KB

    MD5

    4730bcca5ec3e6a057604dc02d289236

    SHA1

    fe421fa51dc1ca9133189f6afe7bd410238971b7

    SHA256

    4da541578caf4cc3336ffb6fef30997deb1f7f6ab9bb38a2be58e014cc7b58a3

    SHA512

    f84d3c59fa448db14ef6f247adc9f1785a5f9149701e6faa9aeb64298a30245694faf4aa428e0396b4dd418a164c7564a9de7ab20c1ae669497422ee187b1584

  • C:\Windows\vbwwjcpnxucn.exe

    Filesize

    367KB

    MD5

    4730bcca5ec3e6a057604dc02d289236

    SHA1

    fe421fa51dc1ca9133189f6afe7bd410238971b7

    SHA256

    4da541578caf4cc3336ffb6fef30997deb1f7f6ab9bb38a2be58e014cc7b58a3

    SHA512

    f84d3c59fa448db14ef6f247adc9f1785a5f9149701e6faa9aeb64298a30245694faf4aa428e0396b4dd418a164c7564a9de7ab20c1ae669497422ee187b1584

  • memory/240-73-0x0000000000000000-mapping.dmp

  • memory/764-93-0x0000000000000000-mapping.dmp

  • memory/1316-71-0x0000000000000000-mapping.dmp

  • memory/1576-67-0x00000000003C0000-0x00000000003C3000-memory.dmp

    Filesize

    12KB

  • memory/1576-54-0x00000000003C0000-0x00000000003C3000-memory.dmp

    Filesize

    12KB

  • memory/1928-69-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1928-74-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1928-65-0x0000000000416AC8-mapping.dmp

  • memory/1928-70-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1928-64-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1928-62-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1928-60-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1928-68-0x00000000764D1000-0x00000000764D3000-memory.dmp

    Filesize

    8KB

  • memory/1928-58-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1928-55-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/1928-56-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/2040-90-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/2040-91-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/2040-92-0x0000000000400000-0x0000000000485000-memory.dmp

    Filesize

    532KB

  • memory/2040-86-0x0000000000416AC8-mapping.dmp