Analysis

  • max time kernel
    151s
  • max time network
    15s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:17

General

  • Target

    8f06645838d3d75e44d4527e2928c71af0a7214254867379359eb3e46109cbde.exe

  • Size

    69KB

  • MD5

    2b0384be06d20d3f4dd95cb5dda08683

  • SHA1

    0a8516e8309816c029958b8d8485bc3cd4daa01d

  • SHA256

    8f06645838d3d75e44d4527e2928c71af0a7214254867379359eb3e46109cbde

  • SHA512

    07528a739430be0c8b3074d0c7b4f04e7f9d99acd30b87c9238b66e8ad2af811f4ac7eb0702f2527970d8ae36780c87dc39d6acde397b9c605a54f5b9fe1f1d2

Malware Config

Extracted

Path

C:\ProgramData\Microsoft\User Account Pictures\CC6069-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .cc6069 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_cc6069: K+499L7IDzRQVvevIYqc8qwx3/kWoRnWl8bl94aRoIRdWYA6v8 EqTy38Mehp8qnWH2Tsi5ufOt84MaX205wY2m746duPpW0ZEYDe TYZIgecqrupbEQEkA6Ta24++2IPguX5VKDZGHbDUbe+90E2b8T CGFGBowaOJD9Ob4HJgwBUiQdJH/KbSjhZS2SqMbfy3KdCEPS6D 6rUK0+/+os5jyGQhLJsi+jubcbBIqAefK//U0lHLjomJqJluoJ oDV2eigaEWSJGzHlvHYzKjlobyP/1lVccP7XK0wA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Users\All Users\Microsoft\Search\Data\Applications\Windows\CC6069-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .cc6069 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_cc6069: K+499L7IDzRQVvevIYqc8qwx3/kWoRnWl8bl94aRoIRdWYA6v8 EqTy38Mehp8qnWH2Tsi5ufOt84MaX205wY2m746duPpW0ZEYDe TYZIgecqrupbEQEkA6Ta24++2IPguX5VKDZGHbDUbe+90E2b8T CGFGBowaOJD9Ob4HJgwBUiQdJH/KbSjhZS2SqMbfy3KdCEPS6D 6rUK0+/+os5jyGQhLJsi+jubcbBIqAefK//U0lHLjomJqJluoJ oDV2eigaEWSJGzHlvHYzKjlobyP/1lVccP7XK0wA==}Hi! Your files are encrypted. All encrypted files for this computer has extension: .cc6069 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_cc6069: K+499L7IDzRQVvevIYqc8qwx3/kWoRnWl8bl94aRoIRdWYA6v8 EqTy38Mehp8qnWH2Tsi5ufOt84MaX205wY2m746duPpW0ZEYDe TYZIgecqrupbEQEkA6Ta24++2IPguX5VKDZGHbDUbe+90E2b8T CGFGBowaOJD9Ob4HJgwBUiQdJH/KbSjhZS2SqMbfy3KdCEPS6D 6rUK0+/+os5jyGQhLJsi+jubcbBIqAefK//U0lHLjomJqJluoJ oDV2eigaEWSJGzHlvHYzKjlobyP/1lVccP7XK0wA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

  • Netwalker Ransomware

    Ransomware family with multiple versions. Also known as MailTo.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 7 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Modifies service 2 TTPs 5 IoCs
  • Drops file in Program Files directory 7472 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 18676 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8f06645838d3d75e44d4527e2928c71af0a7214254867379359eb3e46109cbde.exe
    "C:\Users\Admin\AppData\Local\Temp\8f06645838d3d75e44d4527e2928c71af0a7214254867379359eb3e46109cbde.exe"
    1⤵
    • Modifies extensions of user files
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1700
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:2032
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Modifies service
    • Suspicious use of AdjustPrivilegeToken
    PID:3596

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/2032-0-0x0000000000000000-mapping.dmp