Overview

overview

10

Static

static

43fc626908...e0.exe

windows7_x64

10

43fc626908...e0.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    163s
  • max time network
    173s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    07-07-2022 21:10

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General

  • Target

    43fc62690894f36af348e9051901f8456c2e375e0ce973b1e4a6d24dfd927fe0.exe

  • Size

    364KB

  • MD5

    833c63e2520b66e2d6931dc117463ca5

  • SHA1

    e1cd37f586a25fe7681d8c5ec41500ddaa112fc3

  • SHA256

    43fc62690894f36af348e9051901f8456c2e375e0ce973b1e4a6d24dfd927fe0

  • SHA512

    9e374ad770a3983967fee753832ae16c86218122d18a5ed052983f64e468bc8fa2d5570396ce8948b411be429e4a932a7d1d47af42767bf1a0edba65edf9c9a6

Score
10/10
teslacryptpersistenceransomwaresuricata

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3751123196-3323558407-1869646069-1000\_RECoVERY_+rwbyt.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://yyre45dbvn2nhbefbmh.begumvelic.at/1B25C6198D7C1DE 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/1B25C6198D7C1DE 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/1B25C6198D7C1DE 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/1B25C6198D7C1DE 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/1B25C6198D7C1DE http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/1B25C6198D7C1DE http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/1B25C6198D7C1DE *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/1B25C6198D7C1DE
URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/1B25C6198D7C1DE

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/1B25C6198D7C1DE

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/1B25C6198D7C1DE

http://xlowfznrg4wf7dli.ONION/1B25C6198D7C1DE

Signatures

  • TeslaCrypt, AlphaCrypt

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

    ransomwareteslacrypt
  • suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

    suricata: ET MALWARE Alphacrypt/TeslaCrypt Ransomware CnC Beacon

    suricata
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 2 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\43fc62690894f36af348e9051901f8456c2e375e0ce973b1e4a6d24dfd927fe0.exe
    "C:\Users\Admin\AppData\Local\Temp\43fc62690894f36af348e9051901f8456c2e375e0ce973b1e4a6d24dfd927fe0.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3204
    • C:\Windows\dekmbncudarq.exe
      C:\Windows\dekmbncudarq.exe
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:4996
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:4456
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\43FC62~1.EXE
      2⤵
        PID:992
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4508

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\dekmbncudarq.exe
      Filesize

      364KB

      MD5

      833c63e2520b66e2d6931dc117463ca5

      SHA1

      e1cd37f586a25fe7681d8c5ec41500ddaa112fc3

      SHA256

      43fc62690894f36af348e9051901f8456c2e375e0ce973b1e4a6d24dfd927fe0

      SHA512

      9e374ad770a3983967fee753832ae16c86218122d18a5ed052983f64e468bc8fa2d5570396ce8948b411be429e4a932a7d1d47af42767bf1a0edba65edf9c9a6

      Download Submit

    • C:\Windows\dekmbncudarq.exe
      Filesize

      364KB

      MD5

      833c63e2520b66e2d6931dc117463ca5

      SHA1

      e1cd37f586a25fe7681d8c5ec41500ddaa112fc3

      SHA256

      43fc62690894f36af348e9051901f8456c2e375e0ce973b1e4a6d24dfd927fe0

      SHA512

      9e374ad770a3983967fee753832ae16c86218122d18a5ed052983f64e468bc8fa2d5570396ce8948b411be429e4a932a7d1d47af42767bf1a0edba65edf9c9a6

      Download Submit

    • memory/992-138-0x0000000000000000-mapping.dmp

      Download

    • memory/3204-130-0x0000000000400000-0x00000000004A0000-memory.dmp

      Filesize

      640KB

      Download

    • memory/3204-134-0x0000000002260000-0x00000000022E6000-memory.dmp

      Filesize

      536KB

      Download

    • memory/4456-144-0x0000000000000000-mapping.dmp

      Download

    • memory/4996-135-0x0000000000000000-mapping.dmp

      Download

    • memory/4996-143-0x00000000020E0000-0x0000000002166000-memory.dmp

      Filesize

      536KB

      Download