Overview

overview

10

Static

static

81398f8bef...5e.exe

windows7-x64

1

81398f8bef...5e.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    10s
  • max time network
    11s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23-10-2022 06:10

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General

  • Target

    81398f8bef9a79509d7e16ca64de1616f59db10f1d3650d90809ca22a42eac5e.exe

  • Size

    428KB

  • MD5

    8428030b9554e9dd9ce63ac6be2d64d1

  • SHA1

    0948f04d6a88d138de830f8eecd8187ab153e59b

  • SHA256

    81398f8bef9a79509d7e16ca64de1616f59db10f1d3650d90809ca22a42eac5e

  • SHA512

    c6f2d42e1615f3647f02092bade80572d28f202af06b425b019075e6891b486a897486995962607f945e1dea0bbcd18faca42de9b594199f0ef4fe2b4faa4c22

  • SSDEEP

    6144:yAjFpeUHryppHI9kCXVuEmKxi/y8xMtoW76Oy8CUgpukeMoXbftChXW3AxfulDGq:TtHry31CXVuE53YV24wblCJxfS6

Score
10/10
teslacryptpersistenceransomware

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2295526160-1155304984-640977766-1000\_RECoVERY_+ltgua.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://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5D80C947EEF6FEC 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5D80C947EEF6FEC 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5D80C947EEF6FEC 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/5D80C947EEF6FEC 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5D80C947EEF6FEC http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5D80C947EEF6FEC http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5D80C947EEF6FEC *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/5D80C947EEF6FEC
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/5D80C947EEF6FEC

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/5D80C947EEF6FEC

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/5D80C947EEF6FEC

http://xlowfznrg4wf7dli.ONION/5D80C947EEF6FEC

Signatures

  • TeslaCrypt, AlphaCrypt

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

    ransomwareteslacrypt
  • 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 31 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 46 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\81398f8bef9a79509d7e16ca64de1616f59db10f1d3650d90809ca22a42eac5e.exe
    "C:\Users\Admin\AppData\Local\Temp\81398f8bef9a79509d7e16ca64de1616f59db10f1d3650d90809ca22a42eac5e.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4792
    • C:\Windows\onarvlhgmkvs.exe
      C:\Windows\onarvlhgmkvs.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:3440
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:5092
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\81398F~1.EXE
      2⤵
        PID:5112
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4628

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\onarvlhgmkvs.exe
      Filesize

      428KB

      MD5

      8428030b9554e9dd9ce63ac6be2d64d1

      SHA1

      0948f04d6a88d138de830f8eecd8187ab153e59b

      SHA256

      81398f8bef9a79509d7e16ca64de1616f59db10f1d3650d90809ca22a42eac5e

      SHA512

      c6f2d42e1615f3647f02092bade80572d28f202af06b425b019075e6891b486a897486995962607f945e1dea0bbcd18faca42de9b594199f0ef4fe2b4faa4c22

      Download Submit

    • C:\Windows\onarvlhgmkvs.exe
      Filesize

      428KB

      MD5

      8428030b9554e9dd9ce63ac6be2d64d1

      SHA1

      0948f04d6a88d138de830f8eecd8187ab153e59b

      SHA256

      81398f8bef9a79509d7e16ca64de1616f59db10f1d3650d90809ca22a42eac5e

      SHA512

      c6f2d42e1615f3647f02092bade80572d28f202af06b425b019075e6891b486a897486995962607f945e1dea0bbcd18faca42de9b594199f0ef4fe2b4faa4c22

      Download Submit

    • memory/3440-137-0x0000000000000000-mapping.dmp

      Download

    • memory/3440-145-0x0000000000980000-0x0000000000A05000-memory.dmp

      Filesize

      532KB

      Download

    • memory/4792-132-0x0000000000400000-0x00000000004AE000-memory.dmp

      Filesize

      696KB

      Download

    • memory/4792-136-0x0000000000AD0000-0x0000000000B55000-memory.dmp

      Filesize

      532KB

      Download

    • memory/5092-146-0x0000000000000000-mapping.dmp

      Download

    • memory/5112-140-0x0000000000000000-mapping.dmp

      Download