Overview

overview

10

Static

static

10

155eaec829...23.exe

windows7_x64

10

155eaec829...23.exe

windows10_x64

10

8a68388787...97.exe

windows7_x64

10

8a68388787...97.exe

windows10_x64

10

9a9bf626d4...d6.exe

windows7_x64

10

9a9bf626d4...d6.exe

windows10_x64

10

a9fb354944...06.exe

windows7_x64

10

a9fb354944...06.exe

windows10_x64

10

Analysis

  • max time kernel
    91s
  • max time network
    94s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    01-07-2021 04:38

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General

  • Target

    9a9bf626d4a3e9afe613f7eaa347acac600de2aecc45a5706aa2ba386625eed6.exe

  • Size

    66KB

  • MD5

    5e7d419747ee589f724a80d9ac8b7186

  • SHA1

    b91e9178b054811312c83f3d81cc4153d2fa38ba

  • SHA256

    9a9bf626d4a3e9afe613f7eaa347acac600de2aecc45a5706aa2ba386625eed6

  • SHA512

    bdd91c5551df4a3adbe56ebcf2045cad1ed924627c16236ef7579ee73974c3d784a0fc2624ecb143912315231c9565854294d021d01549f61140efe1ec2b6c23

Score
10/10
netwalkerransomwarespywarestealer

Malware Config

Extracted

Path

C:\F43E65-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f43e65 -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f43e65: tFP0GSPudA3wtSInAhscvfzXvpX+8l2ijkOL436d3tzEe10FjP SVcGJfsY0ZiP4PzLUEDVdW1wZrykXNUE35iuIGga5wkVoW41Zj ArOjnCI4pLwFkRozDKvyJlBLfroH/ys0CblD0uaY5H3xze4CUd vRlHUDGSOodkUK0pbNjgHm0u2isc40hOk80O4cN0JorA+qzsgb Jgo+i8ncEYB4pVRVYf6vODuPONo2DANhMT9I3Vhuohs2d/TXA/ quUK7xZ8FT7TuCvYxC6E3toGAYAPfnBJuugw4rlA==}
URLs

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Users\Admin\Favorites\Microsoft Websites\F43E65-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f43e65 -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f43e65: tFP0GSPudA3wtSInAhscvfzXvpX+8l2ijkOL436d3tzEe10FjP SVcGJfsY0ZiP4PzLUEDVdW1wZrykXNUE35iuIGga5wkVoW41Zj ArOjnCI4pLwFkRozDKvyJlBLfroH/ys0CblD0uaY5H3xze4CUd vRlHUDGSOodkUK0pbNjgHm0u2isc40hOk80O4cN0JorA+qzsgb Jgo+i8ncEYB4pVRVYf6vODuPONo2DANhMT9I3Vhuohs2d/TXA/ quUK7xZ8FT7TuCvYxC6E3toGAYAPfnBJuugw4rlA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f43e65 -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f43e65: tFP0GSPudA3wtSInAhscvfzXvpX+8l2ijkOL436d3tzEe10FjP SVcGJfsY0ZiP4PzLUEDVdW1wZrykXNUE35iuIGga5wkVoW41Zj ArOjnCI4pLwFkRozDKvyJlBLfroH/ys0CblD0uaY5H3xze4CUd vRlHUDGSOodkUK0pbNjgHm0u2isc40hOk80O4cN0JorA+qzsgb Jgo+i8ncEYB4pVRVYf6vODuPONo2DANhMT9I3Vhuohs2d/TXA/ quUK7xZ8FT7TuCvYxC6E3toGAYAPfnBJuugw4rlA==}
URLs

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBFTSCM\F43E65-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f43e65 -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f43e65: tFP0GSPudA3wtSInAhscvfzXvpX+8l2ijkOL436d3tzEe10FjP SVcGJfsY0ZiP4PzLUEDVdW1wZrykXNUE35iuIGga5wkVoW41Zj ArOjnCI4pLwFkRozDKvyJlBLfroH/ys0CblD0uaY5H3xze4CUd vRlHUDGSOodkUK0pbNjgHm0u2isc40hOk80O4cN0JorA+qzsgb Jgo+i8ncEYB4pVRVYf6vODuPONo2DANhMT9I3Vhuohs2d/TXA/ quUK7xZ8FT7TuCvYxC6E3toGAYAPfnBJuugw4rlA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f43e65 -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f43e65: tFP0GSPudA3wtSInAhscvfzXvpX+8l2ijkOL436d3tzEe10FjP SVcGJfsY0ZiP4PzLUEDVdW1wZrykXNUE35iuIGga5wkVoW41Zj ArOjnCI4pLwFkRozDKvyJlBLfroH/ys0CblD0uaY5H3xze4CUd vRlHUDGSOodkUK0pbNjgHm0u2isc40hOk80O4cN0JorA+qzsgb Jgo+i8ncEYB4pVRVYf6vODuPONo2DANhMT9I3Vhuohs2d/TXA/ quUK7xZ8FT7TuCvYxC6E3toGAYAPfnBJuugw4rlA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f43e65 -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f43e65: tFP0GSPudA3wtSInAhscvfzXvpX+8l2ijkOL436d3tzEe10FjP SVcGJfsY0ZiP4PzLUEDVdW1wZrykXNUE35iuIGga5wkVoW41Zj ArOjnCI4pLwFkRozDKvyJlBLfroH/ys0CblD0uaY5H3xze4CUd vRlHUDGSOodkUK0pbNjgHm0u2isc40hOk80O4cN0JorA+qzsgb Jgo+i8ncEYB4pVRVYf6vODuPONo2DANhMT9I3Vhuohs2d/TXA/ quUK7xZ8FT7TuCvYxC6E3toGAYAPfnBJuugw4rlA==}
URLs

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 4 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.

    spywarestealer
  • Drops file in Program Files directory 64 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 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9a9bf626d4a3e9afe613f7eaa347acac600de2aecc45a5706aa2ba386625eed6.exe
    "C:\Users\Admin\AppData\Local\Temp\9a9bf626d4a3e9afe613f7eaa347acac600de2aecc45a5706aa2ba386625eed6.exe"
    • Modifies extensions of user files
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      • Interacts with shadow copies
      PID:2008
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\F43E65-Readme.txt"
        PID:4708
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c "C:\Users\Admin\AppData\Local\Temp\EABC.tmp.bat"
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:5856
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1964
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:5004
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      • Suspicious use of AdjustPrivilegeToken
      PID:2608

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Privilege Escalation

    Defense Evasion

    File Deletion

    2
    T1107

    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

    00:00 00:00

    Downloads

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

      18230297dbba850a25b6dc479641097c

      SHA1

      b4787b6085c0ce58c2a7a80f7c92f60b840d738d

      SHA256

      4596e48e3659998eac5775ea2cac992168ee92e9fbfc141f249e1240a83f3447

      SHA512

      bd9564aa127259b4dd9e3668d4982065dbc86085a7d51e6d374193c6ca76222fa329d97d2f2808a324384b4b66e469600d602761e4987576a5bb410b3cbc94fd

      Download Submit
    • C:\Users\Admin\Desktop\F43E65-Readme.txt
      MD5

      555dd1aa2511e069d0ae620724a106ec

      SHA1

      5acc903c191b8cf63f5f960d154dc290da5e24d3

      SHA256

      5e4025cf29fdb7cc6104e51701e6894397619af51581ccdc3d722954615d6b44

      SHA512

      543743141b64cec0c4cca4cfd355c947cecf9d58655e98ee0fe5563ad45b442d932d13e026fe5877c926e6c29d5e1ce46ed07a79bbaae419ab52f77a0afcb01a

      Download Submit
    • memory/1964-59-0x0000000076A81000-0x0000000076A83000-memory.dmp
      Filesize

      8KB

      Download
    • memory/2008-60-0x0000000000000000-mapping.dmp
      Download
    • memory/4708-61-0x0000000000000000-mapping.dmp
      Download
    • memory/5004-65-0x0000000000000000-mapping.dmp
      Download
    • memory/5856-63-0x0000000000000000-mapping.dmp
      Download