Analysis

  • max time kernel
    152s
  • max time network
    167s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    12/07/2022, 14:50

General

  • Target

    4a06e0c0face5ed9d31164328a73d9cdc145a61945bfe4678e49d31d6ee34e2f.exe

  • Size

    360KB

  • MD5

    6ef1026b82ff5c587e4355a53c2c944e

  • SHA1

    af5e5cdb2c1f58c2e020e07712a8d5cea162bbe3

  • SHA256

    4a06e0c0face5ed9d31164328a73d9cdc145a61945bfe4678e49d31d6ee34e2f

  • SHA512

    244ba69cc5d7300146cf83ec08b0e1e1fb255c569555e1c653b5ac1e42a5e7ceb64bdebb732c03261f80683423e44ae62ae3cd71130417a7531d59827986fe0f

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2277218442-1199762539-2004043321-1000\_RECOVERY_+flkut.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/56B084A310D02246 2. http://tes543berda73i48fsdfsd.keratadze.at/56B084A310D02246 3. http://tt54rfdjhb34rfbnknaerg.milerteddy.com/56B084A310D02246 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/56B084A310D02246 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/56B084A310D02246 http://tes543berda73i48fsdfsd.keratadze.at/56B084A310D02246 http://tt54rfdjhb34rfbnknaerg.milerteddy.com/56B084A310D02246 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/56B084A310D02246
URLs

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/56B084A310D02246

http://tes543berda73i48fsdfsd.keratadze.at/56B084A310D02246

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/56B084A310D02246

http://xlowfznrg4wf7dli.ONION/56B084A310D02246

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 1 IoCs
  • Deletes itself 1 IoCs
  • Adds Run key to start application 2 TTPs 2 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.

  • 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\4a06e0c0face5ed9d31164328a73d9cdc145a61945bfe4678e49d31d6ee34e2f.exe
    "C:\Users\Admin\AppData\Local\Temp\4a06e0c0face5ed9d31164328a73d9cdc145a61945bfe4678e49d31d6ee34e2f.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1828
    • C:\Windows\cexmikkggtka.exe
      C:\Windows\cexmikkggtka.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:1696
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1260
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\4A06E0~1.EXE
      2⤵
      • Deletes itself
      PID:1464
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1644

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\cexmikkggtka.exe

    Filesize

    360KB

    MD5

    6ef1026b82ff5c587e4355a53c2c944e

    SHA1

    af5e5cdb2c1f58c2e020e07712a8d5cea162bbe3

    SHA256

    4a06e0c0face5ed9d31164328a73d9cdc145a61945bfe4678e49d31d6ee34e2f

    SHA512

    244ba69cc5d7300146cf83ec08b0e1e1fb255c569555e1c653b5ac1e42a5e7ceb64bdebb732c03261f80683423e44ae62ae3cd71130417a7531d59827986fe0f

  • C:\Windows\cexmikkggtka.exe

    Filesize

    360KB

    MD5

    6ef1026b82ff5c587e4355a53c2c944e

    SHA1

    af5e5cdb2c1f58c2e020e07712a8d5cea162bbe3

    SHA256

    4a06e0c0face5ed9d31164328a73d9cdc145a61945bfe4678e49d31d6ee34e2f

    SHA512

    244ba69cc5d7300146cf83ec08b0e1e1fb255c569555e1c653b5ac1e42a5e7ceb64bdebb732c03261f80683423e44ae62ae3cd71130417a7531d59827986fe0f

  • memory/1696-67-0x00000000002C0000-0x0000000000345000-memory.dmp

    Filesize

    532KB

  • memory/1828-54-0x0000000075541000-0x0000000075543000-memory.dmp

    Filesize

    8KB

  • memory/1828-55-0x0000000000400000-0x000000000049E000-memory.dmp

    Filesize

    632KB

  • memory/1828-59-0x0000000000310000-0x0000000000395000-memory.dmp

    Filesize

    532KB