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 03:46

General

  • Target

    79ba3129456095cb130aab3b2fc6e840a6c12b7af06b4120013c6899321ef627.exe

  • Size

    424KB

  • MD5

    d313ccc04176d6084de172cb8aa91a3a

  • SHA1

    1c661ef24338246e08f8266c4b4a5a877de33138

  • SHA256

    79ba3129456095cb130aab3b2fc6e840a6c12b7af06b4120013c6899321ef627

  • SHA512

    5a74833990e3a1bd0db33d782e1197b59dc0ea01aee90cf71dd64c9801967655d4e5e454e055c119f99d6fdcd0c143bab5c86b238e4d36a1370d0c48071e079c

  • SSDEEP

    12288:BtTSCpL5xUCSss7sgHi10WtdCW083blCJxfS6:TTSUHUCS/diqW2gOR1

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-2295526160-1155304984-640977766-1000\_RECoVERY_+llque.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/EC37E023CE20441B 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/EC37E023CE20441B 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/EC37E023CE20441B 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/EC37E023CE20441B 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/EC37E023CE20441B http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/EC37E023CE20441B http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/EC37E023CE20441B *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/EC37E023CE20441B
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/EC37E023CE20441B

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/EC37E023CE20441B

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/EC37E023CE20441B

http://xlowfznrg4wf7dli.ONION/EC37E023CE20441B

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 52 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\79ba3129456095cb130aab3b2fc6e840a6c12b7af06b4120013c6899321ef627.exe
    "C:\Users\Admin\AppData\Local\Temp\79ba3129456095cb130aab3b2fc6e840a6c12b7af06b4120013c6899321ef627.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4776
    • C:\Windows\wrnkkfhtybdt.exe
      C:\Windows\wrnkkfhtybdt.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:2380
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:3748
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\79BA31~1.EXE
      2⤵
        PID:1900
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:3444

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Windows\wrnkkfhtybdt.exe

      Filesize

      424KB

      MD5

      d313ccc04176d6084de172cb8aa91a3a

      SHA1

      1c661ef24338246e08f8266c4b4a5a877de33138

      SHA256

      79ba3129456095cb130aab3b2fc6e840a6c12b7af06b4120013c6899321ef627

      SHA512

      5a74833990e3a1bd0db33d782e1197b59dc0ea01aee90cf71dd64c9801967655d4e5e454e055c119f99d6fdcd0c143bab5c86b238e4d36a1370d0c48071e079c

    • C:\Windows\wrnkkfhtybdt.exe

      Filesize

      424KB

      MD5

      d313ccc04176d6084de172cb8aa91a3a

      SHA1

      1c661ef24338246e08f8266c4b4a5a877de33138

      SHA256

      79ba3129456095cb130aab3b2fc6e840a6c12b7af06b4120013c6899321ef627

      SHA512

      5a74833990e3a1bd0db33d782e1197b59dc0ea01aee90cf71dd64c9801967655d4e5e454e055c119f99d6fdcd0c143bab5c86b238e4d36a1370d0c48071e079c

    • memory/1900-140-0x0000000000000000-mapping.dmp

    • memory/2380-137-0x0000000000000000-mapping.dmp

    • memory/2380-145-0x00000000009B0000-0x0000000000A35000-memory.dmp

      Filesize

      532KB

    • memory/3748-146-0x0000000000000000-mapping.dmp

    • memory/4776-132-0x0000000000400000-0x00000000004AD000-memory.dmp

      Filesize

      692KB

    • memory/4776-136-0x0000000002280000-0x0000000002305000-memory.dmp

      Filesize

      532KB