Overview

overview

10

Static

static

46dbb77094...in.exe

windows7_x64

10

46dbb77094...in.exe

windows10_x64

10

Resubmissions

07-10-2020 17:22

201007-y1r2vypflx 10

06-10-2020 17:21

201006-h5fjza9j9n 10

Analysis

  • max time kernel
    91s
  • max time network
    8s
  • platform
    windows7_x64
  • resource
    win7
  • submitted
    06-10-2020 17:21

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General

  • Target

    46dbb7709411b1429233e0d8d33a02cccd54005a2b4015dcfa8a890252177df9.bin.exe

  • Size

    69KB

  • MD5

    ab8d59aba3dc3c4be755255eca51d879

  • SHA1

    24d2abc132f1337f3bf2dd582efb00e5ac911161

  • SHA256

    46dbb7709411b1429233e0d8d33a02cccd54005a2b4015dcfa8a890252177df9

  • SHA512

    0b1f3a51d6a3006c39f0a4b6ad861944fa9484920d41d68a00d7e88819a732c8bbee9d90da5c6e2c816b5e7cd13a9a35f6a26c85e29a3c3841f59e5cfab87a1e

Score
10/10
ransomwarenetwalkerspywarepersistence

Malware Config

Extracted

Path

C:\Users\Public\Videos\Sample Videos\641F7F-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .641f7f -- 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_641f7f: n3rM/ipm7xzkh/nRPFMezewp7uO26HWy5Th4mVVV7a95EE2TqR ChzDcf6/oMpySoxebiwrp15i1gsL3Jb2LAdFWPnDD8RlMrHUMd zX7O5apy+DQk6366NZfTJX8BCu1+UlfeKYfhxiEnu+p+HZa0Un 5EDxwCkzowCWbM7bZ1WJK28V/TAJcWTx76+1oRMPUoMZfHgIYs Na4RsaPPZ8ivxR5sRBn9Zwu3BDy/Bdry+kDhfCXtTRPU3qRZGg 4M6uGDdmixf2tTdI22Z1+YGJFFqEBlY4m+x16Fqw==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files\Microsoft Office\Document Themes 14\641F7F-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .641f7f -- 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_641f7f: n3rM/ipm7xzkh/nRPFMezewp7uO26HWy5Th4mVVV7a95EE2TqR ChzDcf6/oMpySoxebiwrp15i1gsL3Jb2LAdFWPnDD8RlMrHUMd zX7O5apy+DQk6366NZfTJX8BCu1+UlfeKYfhxiEnu+p+HZa0Un 5EDxwCkzowCWbM7bZ1WJK28V/TAJcWTx76+1oRMPUoMZfHgIYs Na4RsaPPZ8ivxR5sRBn9Zwu3BDy/Bdry+kDhfCXtTRPU3qRZGg 4M6uGDdmixf2tTdI22Z1+YGJFFqEBlY4m+x16Fqw==}Hi! Your files are encrypted. All encrypted files for this computer has extension: .641f7f -- 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_641f7f: n3rM/ipm7xzkh/nRPFMezewp7uO26HWy5Th4mVVV7a95EE2TqR ChzDcf6/oMpySoxebiwrp15i1gsL3Jb2LAdFWPnDD8RlMrHUMd zX7O5apy+DQk6366NZfTJX8BCu1+UlfeKYfhxiEnu+p+HZa0Un 5EDxwCkzowCWbM7bZ1WJK28V/TAJcWTx76+1oRMPUoMZfHgIYs Na4RsaPPZ8ivxR5sRBn9Zwu3BDy/Bdry+kDhfCXtTRPU3qRZGg 4M6uGDdmixf2tTdI22Z1+YGJFFqEBlY4m+x16Fqw==}Hi! Your files are encrypted. All encrypted files for this computer has extension: .641f7f -- 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_641f7f: n3rM/ipm7xzkh/nRPFMezewp7uO26HWy5Th4mVVV7a95EE2TqR ChzDcf6/oMpySoxebiwrp15i1gsL3Jb2LAdFWPnDD8RlMrHUMd zX7O5apy+DQk6366NZfTJX8BCu1+UlfeKYfhxiEnu+p+HZa0Un 5EDxwCkzowCWbM7bZ1WJK28V/TAJcWTx76+1oRMPUoMZfHgIYs Na4RsaPPZ8ivxR5sRBn9Zwu3BDy/Bdry+kDhfCXtTRPU3qRZGg 4M6uGDdmixf2tTdI22Z1+YGJFFqEBlY4m+x16Fqw==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

  • Netwalker Ransomware

    Ransomware family with multiple versions. Also known as MailTo.

    ransomwarenetwalker
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 2 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 7502 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 10231 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\46dbb7709411b1429233e0d8d33a02cccd54005a2b4015dcfa8a890252177df9.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\46dbb7709411b1429233e0d8d33a02cccd54005a2b4015dcfa8a890252177df9.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:1496
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1584
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\641F7F-Readme.txt"
      2⤵
        PID:7156
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c "C:\Users\Admin\AppData\Local\Temp\8DBF.tmp.bat"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:7812
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1496
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:6908
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:2072

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Privilege Escalation

    Defense Evasion

    File Deletion

    2
    T1107

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Lateral Movement

    Collection

    Data from Local System

    1
    T1005

    Exfiltration

    Command and Control

    Impact

    Inhibit System Recovery

    2
    T1490

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\8DBF.tmp.bat
      MD5

      1b85a01968f7a58e718ac2d060bdf499

      SHA1

      a6fc64915c63bdf1a217db5212bee5ab72fedc78

      SHA256

      9310535e34d35fa5cbe432633cbc0297e5d8bfc34279d37897e2c54345acfe87

      SHA512

      74d11712d64af8dad0bd3c4a62c3f415aafe53f26289dfc230ff680dcb30c5e913ea9671510d1b98d82cbd5294dd0cf6333ec90ce1fa0b866ce20eb5df21e8da

      Download Submit
    • C:\Users\Admin\Desktop\641F7F-Readme.txt
      MD5

      24e430baf968f46d76d5643323fcf19b

      SHA1

      2211c3f6f3c1c7c2ecdc21581f94e64db99e80ea

      SHA256

      b29ed7193506f035ea9b0d8423f395af1808219f6019742b00fd732e53713420

      SHA512

      eb69f879b7109cd31bab3a776c0f42487d40bd16dc49762927ddf788232f26b9600788a35afe4a77d5263e40c4352a971154c31cb53ebf5d0ce13af091afa92f

      Download Submit
    • memory/1584-0-0x0000000000000000-mapping.dmp
      Download
    • memory/6908-10-0x0000000000000000-mapping.dmp
      Download
    • memory/7156-3-0x0000000000000000-mapping.dmp
      Download
    • memory/7812-6-0x0000000000000000-mapping.dmp
      Download