Overview

overview

10

Static

static

10

27319e75c2...d5.exe

windows7_x64

10

27319e75c2...d5.exe

windows10_x64

10

Analysis

  • max time kernel
    105s
  • max time network
    114s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:37

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General

  • Target

    27319e75c23693399977e92b9a7ba5680a7a9db448f93b3221840c61301604d5.exe

  • Size

    69KB

  • MD5

    3a601ee68000508d58ea12203449a202

  • SHA1

    9068567b2b3fdae864ca9b1fb9013d0305e3ca83

  • SHA256

    27319e75c23693399977e92b9a7ba5680a7a9db448f93b3221840c61301604d5

  • SHA512

    176d60567b2bcf89aa6338f3f14b22ee2592e4ea6349c0a51d67e5b7655de611c2a6e58495cab8d9c5c26deaef03ad19852a0f32cd37466fa3241d61395527b0

Score
10/10
netwalkerpersistenceransomwarespyware

Malware Config

Extracted

Path

C:\Program Files\Microsoft Office\Office14\5F6C34-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .5f6c34 -- 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_5f6c34: +U2pNSJwwx49UWlEwMR/9696x0tYjFRbeop9s5IeBJsrY2ag2f k1/nM4PFsEQNdlCnu+a7atMXIwgUXvBbDIuumu6PBQOi48q/a6 0lPqufoiPqyfHhTS6ujLwCqMwno/u1e1eRat50RFdbNUgEGJfk e/7T0iCYJcq5Yq8PFOd9uL2Qk8pasg2+8pO1xIaHkWJ6nP83EB yEarVz1tyjRIcO8HA3oar10mbwHxdD/dObC7bpNO1bE7hxphqZ TFOw8+0mUJ+9Hpb3NZXOQkxTlxmL2sk/sQeTrJ7A==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Office14\CONVERT\5F6C34-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .5f6c34 -- 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_5f6c34: +U2pNSJwwx49UWlEwMR/9696x0tYjFRbeop9s5IeBJsrY2ag2f k1/nM4PFsEQNdlCnu+a7atMXIwgUXvBbDIuumu6PBQOi48q/a6 0lPqufoiPqyfHhTS6ujLwCqMwno/u1e1eRat50RFdbNUgEGJfk e/7T0iCYJcq5Yq8PFOd9uL2Qk8pasg2+8pO1xIaHkWJ6nP83EB yEarVz1tyjRIcO8HA3oar10mbwHxdD/dObC7bpNO1bE7hxphqZ TFOw8+0mUJ+9Hpb3NZXOQkxTlxmL2sk/sQeTrJ7A==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .5f6c34 -- 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_5f6c34: +U2pNSJwwx49UWlEwMR/9696x0tYjFRbeop9s5IeBJsrY2ag2f k1/nM4PFsEQNdlCnu+a7atMXIwgUXvBbDIuumu6PBQOi48q/a6 0lPqufoiPqyfHhTS6ujLwCqMwno/u1e1eRat50RFdbNUgEGJfk e/7T0iCYJcq5Yq8PFOd9uL2Qk8pasg2+8pO1xIaHkWJ6nP83EB yEarVz1tyjRIcO8HA3oar10mbwHxdD/dObC7bpNO1bE7hxphqZ TFOw8+0mUJ+9Hpb3NZXOQkxTlxmL2sk/sQeTrJ7A==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Office14\PAGESIZE\5F6C34-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .5f6c34 -- 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_5f6c34: +U2pNSJwwx49UWlEwMR/9696x0tYjFRbeop9s5IeBJsrY2ag2f k1/nM4PFsEQNdlCnu+a7atMXIwgUXvBbDIuumu6PBQOi48q/a6 0lPqufoiPqyfHhTS6ujLwCqMwno/u1e1eRat50RFdbNUgEGJfk e/7T0iCYJcq5Yq8PFOd9uL2Qk8pasg2+8pO1xIaHkWJ6nP83EB yEarVz1tyjRIcO8HA3oar10mbwHxdD/dObC7bpNO1bE7hxphqZ TFOw8+0mUJ+9Hpb3NZXOQkxTlxmL2sk/sQeTrJ7A==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .5f6c34 -- 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_5f6c34: +U2pNSJwwx49UWlEwMR/9696x0tYjFRbeop9s5IeBJsrY2ag2f k1/nM4PFsEQNdlCnu+a7atMXIwgUXvBbDIuumu6PBQOi48q/a6 0lPqufoiPqyfHhTS6ujLwCqMwno/u1e1eRat50RFdbNUgEGJfk e/7T0iCYJcq5Yq8PFOd9uL2Qk8pasg2+8pO1xIaHkWJ6nP83EB yEarVz1tyjRIcO8HA3oar10mbwHxdD/dObC7bpNO1bE7hxphqZ TFOw8+0mUJ+9Hpb3NZXOQkxTlxmL2sk/sQeTrJ7A==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .5f6c34 -- 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_5f6c34: +U2pNSJwwx49UWlEwMR/9696x0tYjFRbeop9s5IeBJsrY2ag2f k1/nM4PFsEQNdlCnu+a7atMXIwgUXvBbDIuumu6PBQOi48q/a6 0lPqufoiPqyfHhTS6ujLwCqMwno/u1e1eRat50RFdbNUgEGJfk e/7T0iCYJcq5Yq8PFOd9uL2Qk8pasg2+8pO1xIaHkWJ6nP83EB yEarVz1tyjRIcO8HA3oar10mbwHxdD/dObC7bpNO1bE7hxphqZ TFOw8+0mUJ+9Hpb3NZXOQkxTlxmL2sk/sQeTrJ7A==}
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 14 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 7494 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 10627 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:1360
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1188
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\5F6C34-Readme.txt"
      2⤵
        PID:7420
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c "C:\Users\Admin\AppData\Local\Temp\61A0.tmp.bat"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:7848
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1360
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:7524
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:6428

    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\61A0.tmp.bat
      MD5

      06c4e1813cfd573157a79bdaa194419e

      SHA1

      c424c2e41553e6a4b9284b93c22ed6f9b997d63b

      SHA256

      e01c8400030e62d42f57b331e9c29c4761f8bddf4d94fdd28fdcdb2dcd38a6e9

      SHA512

      c71f750bbc4d039784534134023876ae0caa67be4082f381b41d81bcc275de19217b55ef10837e94934154c7d8d92ac30cf35d86141bb32f43ef19df242c2f56

      Download Submit
    • C:\Users\Admin\Desktop\5F6C34-Readme.txt
      MD5

      125bbefa461c607458c5f07c078e6f47

      SHA1

      a9e735d43abf3e4b79f49c54dc155fadfbceb991

      SHA256

      d5b1356c1a00db01a01400a5cab8afe26a64619b2a83d9c84299cc85fafb998d

      SHA512

      aca7d5be2891e23f30c1105e7abd6b1977485fa054117d404cbd77e67947aa62ec58d958688d349d11d5a480ead0a64eea62038f9e05f807cbbecc524af1ffdb

      Download Submit
    • memory/1188-0-0x0000000000000000-mapping.dmp
      Download
    • memory/7420-4-0x0000000000000000-mapping.dmp
      Download
    • memory/7524-12-0x0000000000000000-mapping.dmp
      Download
    • memory/7848-7-0x0000000000000000-mapping.dmp
      Download