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Analysis

  • max time kernel
    152s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    25/06/2022, 20:44

General

  • Target

    383a5a2688bffe24f6a72a04e0d0c09c80180718db5e834f0357e9053318a0b2.exe

  • Size

    251KB

  • MD5

    4fc33bc1cf2b316adae92fd83db29cc1

  • SHA1

    2e4ea25d7243b3f8fb33f3498adb588bdc166cb5

  • SHA256

    383a5a2688bffe24f6a72a04e0d0c09c80180718db5e834f0357e9053318a0b2

  • SHA512

    3ac544d721f3a578b9ced23cf5d940da4b6fe9374ec3e6e215b0b14e2d9f884f6d0f7c1bf9dc39a50cb1ca779709d89dbad8e2378ae92a060f85c20c24992558

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-1083475884-596052423-1669053738-1000\_RECOVERY_+gxvlv.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/80D3947D55D44F 2. http://tes543berda73i48fsdfsd.keratadze.at/80D3947D55D44F 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/80D3947D55D44F 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/80D3947D55D44F 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/80D3947D55D44F http://tes543berda73i48fsdfsd.keratadze.at/80D3947D55D44F http://tt54rfdjhb34rfbnknaerg.milerteddy.com/80D3947D55D44F *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/80D3947D55D44F
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/80D3947D55D44F

http://tes543berda73i48fsdfsd.keratadze.at/80D3947D55D44F

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/80D3947D55D44F

http://xlowfznrg4wf7dli.ONION/80D3947D55D44F

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\383a5a2688bffe24f6a72a04e0d0c09c80180718db5e834f0357e9053318a0b2.exe
    "C:\Users\Admin\AppData\Local\Temp\383a5a2688bffe24f6a72a04e0d0c09c80180718db5e834f0357e9053318a0b2.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1840
    • C:\Windows\kaaslrphebrq.exe
      C:\Windows\kaaslrphebrq.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:1976
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:548
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\383A5A~1.EXE
      2⤵
      • Deletes itself
      PID:1820
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:540

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\kaaslrphebrq.exe

    Filesize

    251KB

    MD5

    4fc33bc1cf2b316adae92fd83db29cc1

    SHA1

    2e4ea25d7243b3f8fb33f3498adb588bdc166cb5

    SHA256

    383a5a2688bffe24f6a72a04e0d0c09c80180718db5e834f0357e9053318a0b2

    SHA512

    3ac544d721f3a578b9ced23cf5d940da4b6fe9374ec3e6e215b0b14e2d9f884f6d0f7c1bf9dc39a50cb1ca779709d89dbad8e2378ae92a060f85c20c24992558

  • C:\Windows\kaaslrphebrq.exe

    Filesize

    251KB

    MD5

    4fc33bc1cf2b316adae92fd83db29cc1

    SHA1

    2e4ea25d7243b3f8fb33f3498adb588bdc166cb5

    SHA256

    383a5a2688bffe24f6a72a04e0d0c09c80180718db5e834f0357e9053318a0b2

    SHA512

    3ac544d721f3a578b9ced23cf5d940da4b6fe9374ec3e6e215b0b14e2d9f884f6d0f7c1bf9dc39a50cb1ca779709d89dbad8e2378ae92a060f85c20c24992558

  • memory/1840-54-0x00000000751C1000-0x00000000751C3000-memory.dmp

    Filesize

    8KB

  • memory/1840-55-0x00000000003D0000-0x00000000003FE000-memory.dmp

    Filesize

    184KB

  • memory/1840-56-0x0000000000400000-0x0000000000492000-memory.dmp

    Filesize

    584KB

  • memory/1840-61-0x0000000000400000-0x0000000000492000-memory.dmp

    Filesize

    584KB

  • memory/1976-62-0x0000000000400000-0x0000000000492000-memory.dmp

    Filesize

    584KB

  • memory/1976-64-0x0000000000400000-0x0000000000492000-memory.dmp

    Filesize

    584KB