Overview

overview

10

Static

static

27319e75c2...d5.exe

windows7_x64

10

27319e75c2...d5.exe

windows10_x64

10

Analysis

  • max time kernel
    144s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    21-08-2020 12:29

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General

  • Target

    27319e75c23693399977e92b9a7ba5680a7a9db448f93b3221840c61301604d5.exe

  • Size

    69KB

  • MD5

    3a601ee68000508d58ea12203449a202

  • SHA1

    9068567b2b3fdae864ca9b1fb9013d0305e3ca83

  • SHA256

    27319e75c23693399977e92b9a7ba5680a7a9db448f93b3221840c61301604d5

  • SHA512

    176d60567b2bcf89aa6338f3f14b22ee2592e4ea6349c0a51d67e5b7655de611c2a6e58495cab8d9c5c26deaef03ad19852a0f32cd37466fa3241d61395527b0

Score
10/10
ransomwarespywarepersistencenetwalker

Malware Config

Extracted

Path

C:\Program Files (x86)\MSBuild\6157E9-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .6157e9 -- 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. -- 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_6157e9: fBOn9a9Ne1bkJ8WcT/uZ2SmmpV0dg3Zee8uWj+rqIrq9m+ALHv rr5FYZZUGM5x9Xc6O2o8qEj/Nwk4ZRVwU9XAvlEC/T1hUSq/a6 0gXGeEwGYqDLga1OxUSozER6FiKg8S3ZoPqh3otbjDvY3PTjpb GNvVjWki9lWRJ77AIBdgImWgsr3PnqQCmQLaSMX6lbtktcf6bT Qb0u3D15dmKZZJNspYmDGmfSc1tOIKlLXFdjLLQNVI4L3ZdMsI iOcxamLeiC/PGomWCN9WM137IG4SVshy62EhMosA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Users\Admin\Desktop\6157E9-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .6157e9 -- 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. -- 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_6157e9: fBOn9a9Ne1bkJ8WcT/uZ2SmmpV0dg3Zee8uWj+rqIrq9m+ALHv rr5FYZZUGM5x9Xc6O2o8qEj/Nwk4ZRVwU9XAvlEC/T1hUSq/a6 0gXGeEwGYqDLga1OxUSozER6FiKg8S3ZoPqh3otbjDvY3PTjpb GNvVjWki9lWRJ77AIBdgImWgsr3PnqQCmQLaSMX6lbtktcf6bT Qb0u3D15dmKZZJNspYmDGmfSc1tOIKlLXFdjLLQNVI4L3ZdMsI iOcxamLeiC/PGomWCN9WM137IG4SVshy62EhMosA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .6157e9 -- 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. -- 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_6157e9: fBOn9a9Ne1bkJ8WcT/uZ2SmmpV0dg3Zee8uWj+rqIrq9m+ALHv rr5FYZZUGM5x9Xc6O2o8qEj/Nwk4ZRVwU9XAvlEC/T1hUSq/a6 0gXGeEwGYqDLga1OxUSozER6FiKg8S3ZoPqh3otbjDvY3PTjpb GNvVjWki9lWRJ77AIBdgImWgsr3PnqQCmQLaSMX6lbtktcf6bT Qb0u3D15dmKZZJNspYmDGmfSc1tOIKlLXFdjLLQNVI4L3ZdMsI iOcxamLeiC/PGomWCN9WM137IG4SVshy62EhMosA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

  • Netwalker

    Ransomware believed to be a variant of MailTo.

    ransomwarenetwalker
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 15 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • 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.

    spyware
  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Drops file in Program Files directory 7493 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 18965 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\27319e75c23693399977e92b9a7ba5680a7a9db448f93b3221840c61301604d5.exe
    "C:\Users\Admin\AppData\Local\Temp\27319e75c23693399977e92b9a7ba5680a7a9db448f93b3221840c61301604d5.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:1440
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1004
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\6157E9-Readme.txt"
      2⤵
        PID:4344
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c "C:\Users\Admin\AppData\Local\Temp\48A3.tmp.bat"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:932
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1440
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:3576
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:7044

    Network

    MITRE ATT&CK Enterprise v6

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    Downloads