Overview

overview

10

Static

static

10

02cb34da6e...77.exe

windows7_x64

10

02cb34da6e...77.exe

windows10_x64

10

Analysis

  • max time kernel
    119s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:17

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General

  • Target

    02cb34da6e620d9428f9c8f375fe96a397464d272f723abd8296c4b420fb0e77.exe

  • Size

    69KB

  • MD5

    4e59fba21c5e9ec603f28a92d9efd8d0

  • SHA1

    e57731be1f15c323a7b55b914a0599722ff3985f

  • SHA256

    02cb34da6e620d9428f9c8f375fe96a397464d272f723abd8296c4b420fb0e77

  • SHA512

    80c0a9a8e0ef48c7ca23136cf84eaab568f5dc261ecd348916a382098d8ffa24144637afda5c0649886f2484e8855c6a16c34b0b1c2fe008480a1d035f8dab65

Score
10/10
netwalkerpersistenceransomwarespyware

Malware Config

Extracted

Path

C:\Users\Public\Libraries\2D8AA1-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .2d8aa1 -- 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_2d8aa1: CIV0l/hEvpyuT4FV0QOGjc9QcOyHGdSYDLA/FbPoogGMoAKTi4 ONQaMDmD53tzbLsf3uWE6Gt1JWq826lInNcv+CeKpBRxgwTAuG pMy9ioTVyHakd4+/FRESDWxvRoruK92cqE7zHq0GY8fQPq8Kpc o5NSfjp0+NYb/iNztdgmzYvcMoR1/4vgvFS/tQVIlxxt0WAdHu N1Fb4+axYdqkHsTYjDomcCRMLRH/FUdQeO2ewNB230J+5DzmjM CkH3aNcFSGlkW5XPtGPjvnb00WXNAEw8dlrI9Ybw==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Document Themes 14\2D8AA1-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .2d8aa1 -- 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_2d8aa1: CIV0l/hEvpyuT4FV0QOGjc9QcOyHGdSYDLA/FbPoogGMoAKTi4 ONQaMDmD53tzbLsf3uWE6Gt1JWq826lInNcv+CeKpBRxgwTAuG pMy9ioTVyHakd4+/FRESDWxvRoruK92cqE7zHq0GY8fQPq8Kpc o5NSfjp0+NYb/iNztdgmzYvcMoR1/4vgvFS/tQVIlxxt0WAdHu N1Fb4+axYdqkHsTYjDomcCRMLRH/FUdQeO2ewNB230J+5DzmjM CkH3aNcFSGlkW5XPtGPjvnb00WXNAEw8dlrI9Ybw==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .2d8aa1 -- 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_2d8aa1: CIV0l/hEvpyuT4FV0QOGjc9QcOyHGdSYDLA/FbPoogGMoAKTi4 ONQaMDmD53tzbLsf3uWE6Gt1JWq826lInNcv+CeKpBRxgwTAuG pMy9ioTVyHakd4+/FRESDWxvRoruK92cqE7zHq0GY8fQPq8Kpc o5NSfjp0+NYb/iNztdgmzYvcMoR1/4vgvFS/tQVIlxxt0WAdHu N1Fb4+axYdqkHsTYjDomcCRMLRH/FUdQeO2ewNB230J+5DzmjM CkH3aNcFSGlkW5XPtGPjvnb00WXNAEw8dlrI9Ybw==}
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 5 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 7483 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 17625 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\02cb34da6e620d9428f9c8f375fe96a397464d272f723abd8296c4b420fb0e77.exe
    "C:\Users\Admin\AppData\Local\Temp\02cb34da6e620d9428f9c8f375fe96a397464d272f723abd8296c4b420fb0e77.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:1732
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1904
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\2D8AA1-Readme.txt"
      2⤵
        PID:6012
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c "C:\Users\Admin\AppData\Local\Temp\EC90.tmp.bat"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:6056
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1732
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:6792
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:7852

    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\EC90.tmp.bat
      MD5

      ae66f6eb5838f83fa61f66bdb13e23ea

      SHA1

      806e6a21fca3ef22516647ad24c4aa7835802239

      SHA256

      2d9d8e49d3b7318aa1b0dc00a58c4b9b4cdc79e5eeee6076191b719511e15307

      SHA512

      e119c44f8ce27ebebe398cee152bd03319cc6619d52aa74d73df417bdde15e3155f7a3f0b5630f3fe98fa4b33fecf964a201214721770e22568c3d0d47b69d1b

      Download Submit
    • C:\Users\Admin\Desktop\2D8AA1-Readme.txt
      MD5

      04c710de8fde3fe7b0784830315d8f14

      SHA1

      77d45a64608a6d434e6d9828730fc28b923fc043

      SHA256

      854cbfc7094e760eb0bbd2f5264e10f5b9e29d41bdf2d281b0caa746343b3203

      SHA512

      295d9b434d5829805f6a8e52edb497ad42ca80b6efebfc288f1935742391f95fb898c8889eb45cb23fba8bda4361d19ea587b76a5c348911dd84b09e4055f5eb

      Download Submit
    • memory/1904-0-0x0000000000000000-mapping.dmp
      Download
    • memory/6012-4-0x0000000000000000-mapping.dmp
      Download
    • memory/6056-7-0x0000000000000000-mapping.dmp
      Download
    • memory/6792-12-0x0000000000000000-mapping.dmp
      Download