Overview

overview

10

Static

static

f2215e1a84...in.exe

windows7_x64

10

f2215e1a84...in.exe

windows10_x64

10

Analysis

  • max time kernel
    78s
  • max time network
    68s
  • platform
    windows7_x64
  • resource
    win7v200722
  • submitted
    21-08-2020 12:28

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General

  • Target

    f2215e1a848bc5a5d172745201ea428b1d16fee7c814c5c5180a94a134592e86.bin.exe

  • Size

    69KB

  • MD5

    f0cc568491cd523d2677d938f163395f

  • SHA1

    ca05a4cde0ba40983381b2f91c9ecee672c69262

  • SHA256

    f2215e1a848bc5a5d172745201ea428b1d16fee7c814c5c5180a94a134592e86

  • SHA512

    acaa24ed418feb3dbfedae933859f43adfbb2442fd1fb46baadc5235006ee4c0a1b9ed1b4a1e2514ea7fc43d7fac0b768776e43d1452d4a47fd968c0aa0c46ba

Score
10/10
ransomwarepersistencenetwalkerspyware

Malware Config

Extracted

Path

C:\Users\Admin\71F359-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .71f359 -- 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_71f359: 0SvSrgz7QpkD+FL8Wt6GJmaYZhSU1hVhsRCw6oEqPnaWJ+KcwH 6kASswZWXlZ8dYU10Mt26LZSpptsiRiXPGt/9Wpeh0T30txS9i HF4A4xAEFAXPCSxp8QKaZYlkv/qRkmIHLhw+v91HISzicJSnl4 Lz4jPID7stOY1C/a329sJRJ5nhG44KBP4pjHQ0GmACkPwIrg9O rk/z2n6SNyTPnYMuoV/3GR9zAowrAl0lbRPaRp5E758QWuZE2I y7Uedbnvj62h+SDJV2dzNWd7iYOfZG6uQSGQCmaA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Users\Public\Pictures\Sample Pictures\71F359-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .71f359 -- 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_71f359: 0SvSrgz7QpkD+FL8Wt6GJmaYZhSU1hVhsRCw6oEqPnaWJ+KcwH 6kASswZWXlZ8dYU10Mt26LZSpptsiRiXPGt/9Wpeh0T30txS9i HF4A4xAEFAXPCSxp8QKaZYlkv/qRkmIHLhw+v91HISzicJSnl4 Lz4jPID7stOY1C/a329sJRJ5nhG44KBP4pjHQ0GmACkPwIrg9O rk/z2n6SNyTPnYMuoV/3GR9zAowrAl0lbRPaRp5E758QWuZE2I y7Uedbnvj62h+SDJV2dzNWd7iYOfZG6uQSGQCmaA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .71f359 -- 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_71f359: 0SvSrgz7QpkD+FL8Wt6GJmaYZhSU1hVhsRCw6oEqPnaWJ+KcwH 6kASswZWXlZ8dYU10Mt26LZSpptsiRiXPGt/9Wpeh0T30txS9i HF4A4xAEFAXPCSxp8QKaZYlkv/qRkmIHLhw+v91HISzicJSnl4 Lz4jPID7stOY1C/a329sJRJ5nhG44KBP4pjHQ0GmACkPwIrg9O rk/z2n6SNyTPnYMuoV/3GR9zAowrAl0lbRPaRp5E758QWuZE2I y7Uedbnvj62h+SDJV2dzNWd7iYOfZG6uQSGQCmaA==}
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 6 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 7491 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 17831 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f2215e1a848bc5a5d172745201ea428b1d16fee7c814c5c5180a94a134592e86.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\f2215e1a848bc5a5d172745201ea428b1d16fee7c814c5c5180a94a134592e86.bin.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:1096
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1408
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\71F359-Readme.txt"
      2⤵
        PID:228
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c "C:\Users\Admin\AppData\Local\Temp\6028.tmp.bat"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:5452
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1096
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:4036
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:3088

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\6028.tmp.bat
      Download Submit

    • C:\Users\Admin\Desktop\71F359-Readme.txt
      Download Submit

    • memory/228-4-0x0000000000000000-mapping.dmp

      Download

    • memory/1408-0-0x0000000000000000-mapping.dmp

      Download

    • memory/4036-11-0x0000000000000000-mapping.dmp

      Download

    • memory/5452-7-0x0000000000000000-mapping.dmp

      Download