Analysis

  • max time kernel
    151s
  • max time network
    121s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • resource tags

    arch:x64arch:x86image:win7-20220414-enlocale:en-usos:windows7-x64system
  • submitted
    16-07-2022 23:48

General

  • Target

    5375d680745593f96ad797fb29b770228dfc8169613a72928a67003f36a9ba12.exe

  • Size

    337KB

  • MD5

    68a457cedcf7dc8ef24863d223ccece5

  • SHA1

    8a6b62d84b00f8bf72e903c8591486dbea87b4ec

  • SHA256

    5375d680745593f96ad797fb29b770228dfc8169613a72928a67003f36a9ba12

  • SHA512

    0fbef2de39466a9007c1a69827eb40ebf6ab78295155285955c37362e160ab8c7cd1ff5f5ee2132b9d26986b83f211eda1c03ffa0fab1e8806a445dba5329d25

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-1083475884-596052423-1669053738-1000\_RECoVERY_+cyewu.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/B3D9FD789D3A1B33 2. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/B3D9FD789D3A1B33 3. http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/B3D9FD789D3A1B33 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/B3D9FD789D3A1B33 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://yyre45dbvn2nhbefbmh.begumvelic.at/B3D9FD789D3A1B33 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/B3D9FD789D3A1B33 http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/B3D9FD789D3A1B33 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/B3D9FD789D3A1B33
URLs

http://yyre45dbvn2nhbefbmh.begumvelic.at/B3D9FD789D3A1B33

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/B3D9FD789D3A1B33

http://gwe32fdr74bhfsyujb34gfszfv.zatcurr.com/B3D9FD789D3A1B33

http://xlowfznrg4wf7dli.ONION/B3D9FD789D3A1B33

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\5375d680745593f96ad797fb29b770228dfc8169613a72928a67003f36a9ba12.exe
    "C:\Users\Admin\AppData\Local\Temp\5375d680745593f96ad797fb29b770228dfc8169613a72928a67003f36a9ba12.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1864
    • C:\Windows\facovsmgpvmj.exe
      C:\Windows\facovsmgpvmj.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:1228
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:320
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\5375D6~1.EXE
      2⤵
      • Deletes itself
      PID:1696
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1212

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\facovsmgpvmj.exe

    Filesize

    337KB

    MD5

    68a457cedcf7dc8ef24863d223ccece5

    SHA1

    8a6b62d84b00f8bf72e903c8591486dbea87b4ec

    SHA256

    5375d680745593f96ad797fb29b770228dfc8169613a72928a67003f36a9ba12

    SHA512

    0fbef2de39466a9007c1a69827eb40ebf6ab78295155285955c37362e160ab8c7cd1ff5f5ee2132b9d26986b83f211eda1c03ffa0fab1e8806a445dba5329d25

  • C:\Windows\facovsmgpvmj.exe

    Filesize

    337KB

    MD5

    68a457cedcf7dc8ef24863d223ccece5

    SHA1

    8a6b62d84b00f8bf72e903c8591486dbea87b4ec

    SHA256

    5375d680745593f96ad797fb29b770228dfc8169613a72928a67003f36a9ba12

    SHA512

    0fbef2de39466a9007c1a69827eb40ebf6ab78295155285955c37362e160ab8c7cd1ff5f5ee2132b9d26986b83f211eda1c03ffa0fab1e8806a445dba5329d25

  • memory/320-65-0x0000000000000000-mapping.dmp

  • memory/1228-57-0x0000000000000000-mapping.dmp

  • memory/1228-62-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1228-64-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1696-60-0x0000000000000000-mapping.dmp

  • memory/1864-54-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

    Filesize

    8KB

  • memory/1864-55-0x0000000000360000-0x000000000038E000-memory.dmp

    Filesize

    184KB

  • memory/1864-56-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB

  • memory/1864-61-0x0000000000400000-0x00000000004A9000-memory.dmp

    Filesize

    676KB