Analysis

  • max time kernel
    153s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    08-11-2022 13:52

General

  • Target

    a9356dd8568924ba6380fb0c192502cb30b4290cbc7494f9801d8fed4274c724.exe

  • Size

    396KB

  • MD5

    52ec44494fed2c9bebd5ce99903b7775

  • SHA1

    6191526cf35f080922830412c795df4fed5f8696

  • SHA256

    a9356dd8568924ba6380fb0c192502cb30b4290cbc7494f9801d8fed4274c724

  • SHA512

    100a3704d165eda1c8ac9e17c593934e76fe947971e8a9cf6dacbf7304927bd103cda0ae82f1e87530548a0b1832476277c493738bdf421e2e8c1ced7fca2ad7

  • SSDEEP

    6144:Q0sTdSkul5CpfZsu43jx0HdEouuj5axxn7JCpIKxZU/bc92A6mJOl:FG7pfZsu43d0HdEFuj5EpNbWAcsoOl

Malware Config

Extracted

Path

C:\$Recycle.Bin\S-1-5-21-999675638-2867687379-27515722-1000\_RECoVERY_+wdwld.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 RSA4096 More information about the encryption keys using RSA4096 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) How did this happen ? !!! Specially for your PC was generated personal RSA4096 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/7387685FD14E526 2. http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/7387685FD14E526 3. http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/7387685FD14E526 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/7387685FD14E526 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/7387685FD14E526 http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/7387685FD14E526 http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/7387685FD14E526 *-*-* Your personal page Tor-Browser: xlowfznrg4wf7dli.ONION/7387685FD14E526
URLs

http://pts764gt354fder34fsqw45gdfsavadfgsfg.kraskula.com/7387685FD14E526

http://sondr5344ygfweyjbfkw4fhsefv.heliofetch.at/7387685FD14E526

http://uiredn4njfsa4234bafb32ygjdawfvs.frascuft.com/7387685FD14E526

http://xlowfznrg4wf7dli.ONION/7387685FD14E526

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
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • 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 3 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\a9356dd8568924ba6380fb0c192502cb30b4290cbc7494f9801d8fed4274c724.exe
    "C:\Users\Admin\AppData\Local\Temp\a9356dd8568924ba6380fb0c192502cb30b4290cbc7494f9801d8fed4274c724.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1976
    • C:\Windows\rcnngqwyufhg.exe
      C:\Windows\rcnngqwyufhg.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:1096
      • C:\Windows\System32\wbem\WMIC.exe
        "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:560
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\A9356D~1.EXE
      2⤵
      • Deletes itself
      PID:840
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:296

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\rcnngqwyufhg.exe

    Filesize

    396KB

    MD5

    52ec44494fed2c9bebd5ce99903b7775

    SHA1

    6191526cf35f080922830412c795df4fed5f8696

    SHA256

    a9356dd8568924ba6380fb0c192502cb30b4290cbc7494f9801d8fed4274c724

    SHA512

    100a3704d165eda1c8ac9e17c593934e76fe947971e8a9cf6dacbf7304927bd103cda0ae82f1e87530548a0b1832476277c493738bdf421e2e8c1ced7fca2ad7

  • C:\Windows\rcnngqwyufhg.exe

    Filesize

    396KB

    MD5

    52ec44494fed2c9bebd5ce99903b7775

    SHA1

    6191526cf35f080922830412c795df4fed5f8696

    SHA256

    a9356dd8568924ba6380fb0c192502cb30b4290cbc7494f9801d8fed4274c724

    SHA512

    100a3704d165eda1c8ac9e17c593934e76fe947971e8a9cf6dacbf7304927bd103cda0ae82f1e87530548a0b1832476277c493738bdf421e2e8c1ced7fca2ad7

  • memory/1096-68-0x0000000000570000-0x00000000005F4000-memory.dmp

    Filesize

    528KB

  • memory/1976-54-0x0000000074D81000-0x0000000074D83000-memory.dmp

    Filesize

    8KB

  • memory/1976-55-0x00000000004B0000-0x0000000000534000-memory.dmp

    Filesize

    528KB

  • memory/1976-56-0x0000000000400000-0x00000000004A6000-memory.dmp

    Filesize

    664KB

  • memory/1976-60-0x00000000004B0000-0x0000000000534000-memory.dmp

    Filesize

    528KB