Analysis

  • max time kernel
    10s
  • max time network
    14s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-10-2022 06:02

General

  • Target

    aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe

  • Size

    428KB

  • MD5

    85b8d2fa326926f049d7d3b7a083e08e

  • SHA1

    9884d2f5bce7405627495470893765a70f858242

  • SHA256

    aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae

  • SHA512

    89d5b627a708974439e31079d122395c7e9ee06b345e2efa81e38a2821ceded0a1e95f919dcf44dce1dc509eeabae77264b8fadbe151408f63408c8b199090d7

  • SSDEEP

    6144:1Tz+ZXamW2jpJuSTZBDdDgPME1m4SKlwIMvfAoXbftChXW3AxfulDGgB:Nz+YmJJuGZYbzz2IgfFblCJxfS6

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-929662420-1054238289-2961194603-1000\_RECoVERY_+fkhoy.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/D45D6F9C614BEA2 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/D45D6F9C614BEA2 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/D45D6F9C614BEA2 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/D45D6F9C614BEA2 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/D45D6F9C614BEA2 http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/D45D6F9C614BEA2 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/D45D6F9C614BEA2 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/D45D6F9C614BEA2
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/D45D6F9C614BEA2

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/D45D6F9C614BEA2

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/D45D6F9C614BEA2

http://xlowfznrg4wf7dli.ONION/D45D6F9C614BEA2

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
  • 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
  • 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 46 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe
    "C:\Users\Admin\AppData\Local\Temp\aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:516
    • C:\Windows\yjfopqurvite.exe
      C:\Windows\yjfopqurvite.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:3424
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2520
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\ACA73A~1.EXE
      2⤵
        PID:4260
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4712

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\yjfopqurvite.exe

      Filesize

      428KB

      MD5

      85b8d2fa326926f049d7d3b7a083e08e

      SHA1

      9884d2f5bce7405627495470893765a70f858242

      SHA256

      aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae

      SHA512

      89d5b627a708974439e31079d122395c7e9ee06b345e2efa81e38a2821ceded0a1e95f919dcf44dce1dc509eeabae77264b8fadbe151408f63408c8b199090d7

    • C:\Windows\yjfopqurvite.exe

      Filesize

      428KB

      MD5

      85b8d2fa326926f049d7d3b7a083e08e

      SHA1

      9884d2f5bce7405627495470893765a70f858242

      SHA256

      aca73acf92d5c709d17919f0d61f0db64bd50098fe2afe9e5834394dbaa611ae

      SHA512

      89d5b627a708974439e31079d122395c7e9ee06b345e2efa81e38a2821ceded0a1e95f919dcf44dce1dc509eeabae77264b8fadbe151408f63408c8b199090d7

    • memory/516-132-0x0000000000400000-0x00000000004AF000-memory.dmp

      Filesize

      700KB

    • memory/516-139-0x0000000000A90000-0x0000000000B15000-memory.dmp

      Filesize

      532KB

    • memory/2520-146-0x0000000000000000-mapping.dmp

    • memory/3424-136-0x0000000000000000-mapping.dmp

    • memory/3424-145-0x0000000000860000-0x00000000008E5000-memory.dmp

      Filesize

      532KB

    • memory/4260-140-0x0000000000000000-mapping.dmp