Analysis

  • max time kernel
    170s
  • max time network
    169s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    02-08-2022 04:06

General

  • Target

    5a48d53f00afd3a50f06138ba37ca6bb5ff38011801879bdb94215ab8bfdf634.exe

  • Size

    328KB

  • MD5

    452e6b32cf0172170701558e2333d016

  • SHA1

    a9aa39a0765947e12a1475a59740c6de5bb5e7ec

  • SHA256

    5a48d53f00afd3a50f06138ba37ca6bb5ff38011801879bdb94215ab8bfdf634

  • SHA512

    993b3147e0e45444c6f38f917e2bb92d8c63097b1276e6087df19d7396bc06e07d2bd1e9a823649a1d4a1e4037b7845bc8ca7205d8ace8dae07a298116a850e3

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-3762437355-3468409815-1164039494-1000\Recovery+okdnr.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 RSA-4096. More information about the encryption keys using RSA-4096 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) How did this happen ? !!! Specially for your PC was generated personal RSA-4096 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://tt54rfdjhb34rfbnknaerg.milerteddy.com/BBE25A1B3739428 2. http://kkd47eh4hdjshb5t.angortra.at/BBE25A1B3739428 3. http://ytrest84y5i456hghadefdsd.pontogrot.com/BBE25A1B3739428 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/BBE25A1B3739428 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://tt54rfdjhb34rfbnknaerg.milerteddy.com/BBE25A1B3739428 http://kkd47eh4hdjshb5t.angortra.at/BBE25A1B3739428 http://ytrest84y5i456hghadefdsd.pontogrot.com/BBE25A1B3739428 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/BBE25A1B3739428
URLs

http://tt54rfdjhb34rfbnknaerg.milerteddy.com/BBE25A1B3739428

http://kkd47eh4hdjshb5t.angortra.at/BBE25A1B3739428

http://ytrest84y5i456hghadefdsd.pontogrot.com/BBE25A1B3739428

http://xlowfznrg4wf7dli.ONION/BBE25A1B3739428

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 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 4 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 22 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a48d53f00afd3a50f06138ba37ca6bb5ff38011801879bdb94215ab8bfdf634.exe
    "C:\Users\Admin\AppData\Local\Temp\5a48d53f00afd3a50f06138ba37ca6bb5ff38011801879bdb94215ab8bfdf634.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1188
    • C:\Windows\gpdbqxpbmvgj.exe
      C:\Windows\gpdbqxpbmvgj.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:1952
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /noin teractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:620
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\5A48D5~1.EXE
      2⤵
      • Deletes itself
      PID:1064

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\gpdbqxpbmvgj.exe

    Filesize

    328KB

    MD5

    452e6b32cf0172170701558e2333d016

    SHA1

    a9aa39a0765947e12a1475a59740c6de5bb5e7ec

    SHA256

    5a48d53f00afd3a50f06138ba37ca6bb5ff38011801879bdb94215ab8bfdf634

    SHA512

    993b3147e0e45444c6f38f917e2bb92d8c63097b1276e6087df19d7396bc06e07d2bd1e9a823649a1d4a1e4037b7845bc8ca7205d8ace8dae07a298116a850e3

  • C:\Windows\gpdbqxpbmvgj.exe

    Filesize

    328KB

    MD5

    452e6b32cf0172170701558e2333d016

    SHA1

    a9aa39a0765947e12a1475a59740c6de5bb5e7ec

    SHA256

    5a48d53f00afd3a50f06138ba37ca6bb5ff38011801879bdb94215ab8bfdf634

    SHA512

    993b3147e0e45444c6f38f917e2bb92d8c63097b1276e6087df19d7396bc06e07d2bd1e9a823649a1d4a1e4037b7845bc8ca7205d8ace8dae07a298116a850e3

  • memory/620-71-0x0000000000000000-mapping.dmp

  • memory/1064-67-0x0000000000000000-mapping.dmp

  • memory/1188-54-0x0000000075141000-0x0000000075143000-memory.dmp

    Filesize

    8KB

  • memory/1188-55-0x0000000000330000-0x00000000003B6000-memory.dmp

    Filesize

    536KB

  • memory/1188-56-0x0000000000400000-0x0000000000495000-memory.dmp

    Filesize

    596KB

  • memory/1188-68-0x0000000000330000-0x00000000003B6000-memory.dmp

    Filesize

    536KB

  • memory/1952-60-0x0000000000000000-mapping.dmp

  • memory/1952-69-0x0000000000300000-0x0000000000386000-memory.dmp

    Filesize

    536KB