Analysis

  • max time kernel
    151s
  • max time network
    180s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    07-07-2022 08:35

General

  • Target

    4680c01213c8937401e2683be4b1ea4f714bfddcb1dc748a7660fd27e1a227a3.exe

  • Size

    384KB

  • MD5

    8e300d34739d334fbfea3a5dcd4c3fd7

  • SHA1

    af831f928e540ccf0345866694ea8fe537a810e9

  • SHA256

    4680c01213c8937401e2683be4b1ea4f714bfddcb1dc748a7660fd27e1a227a3

  • SHA512

    91360581780dfaf83902d3e06937664d5fd44b93dc7a21b4fc8f1a50c0f49b77d389b2ec19b3a02ca2c044c318d99aa242c18ba81176e727da9c26d10d5d2e5c

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2277218442-1199762539-2004043321-1000\Recovery+dnpey.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/EFE6B4959399A596 2. http://tes543berda73i48fsdfsd.keratadze.at/EFE6B4959399A596 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/EFE6B4959399A596 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/EFE6B4959399A596 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/EFE6B4959399A596 http://tes543berda73i48fsdfsd.keratadze.at/EFE6B4959399A596 http://tt54rfdjhb34rfbnknaerg.milerteddy.com/EFE6B4959399A596 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/EFE6B4959399A596
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/EFE6B4959399A596

http://tes543berda73i48fsdfsd.keratadze.at/EFE6B4959399A596

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/EFE6B4959399A596

http://xlowfznrg4wf7dli.ONION/EFE6B4959399A596

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 36 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 2 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\4680c01213c8937401e2683be4b1ea4f714bfddcb1dc748a7660fd27e1a227a3.exe
    "C:\Users\Admin\AppData\Local\Temp\4680c01213c8937401e2683be4b1ea4f714bfddcb1dc748a7660fd27e1a227a3.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1552
    • C:\Windows\hlnagivhhifc.exe
      C:\Windows\hlnagivhhifc.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:1388
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:656
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\4680C0~1.EXE
      2⤵
      • Deletes itself
      PID:1216
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1540

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\hlnagivhhifc.exe

    Filesize

    384KB

    MD5

    8e300d34739d334fbfea3a5dcd4c3fd7

    SHA1

    af831f928e540ccf0345866694ea8fe537a810e9

    SHA256

    4680c01213c8937401e2683be4b1ea4f714bfddcb1dc748a7660fd27e1a227a3

    SHA512

    91360581780dfaf83902d3e06937664d5fd44b93dc7a21b4fc8f1a50c0f49b77d389b2ec19b3a02ca2c044c318d99aa242c18ba81176e727da9c26d10d5d2e5c

  • C:\Windows\hlnagivhhifc.exe

    Filesize

    384KB

    MD5

    8e300d34739d334fbfea3a5dcd4c3fd7

    SHA1

    af831f928e540ccf0345866694ea8fe537a810e9

    SHA256

    4680c01213c8937401e2683be4b1ea4f714bfddcb1dc748a7660fd27e1a227a3

    SHA512

    91360581780dfaf83902d3e06937664d5fd44b93dc7a21b4fc8f1a50c0f49b77d389b2ec19b3a02ca2c044c318d99aa242c18ba81176e727da9c26d10d5d2e5c

  • memory/656-66-0x0000000000000000-mapping.dmp

  • memory/1216-62-0x0000000000000000-mapping.dmp

  • memory/1388-58-0x0000000000000000-mapping.dmp

  • memory/1388-61-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1388-65-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1552-54-0x0000000076451000-0x0000000076453000-memory.dmp

    Filesize

    8KB

  • memory/1552-55-0x00000000003C0000-0x00000000003EE000-memory.dmp

    Filesize

    184KB

  • memory/1552-56-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1552-57-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB

  • memory/1552-63-0x0000000000400000-0x00000000004B5000-memory.dmp

    Filesize

    724KB