Overview

overview

10

Static

static

10

444169e156...43.exe

windows7_x64

10

444169e156...43.exe

windows10_x64

10

Analysis

  • max time kernel
    161s
  • max time network
    173s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:17

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General

  • Target

    444169e156b48a54e9f96b6b3a1c333670546663c8a2e14e561884c052420043.exe

  • Size

    69KB

  • MD5

    addc865f61694906aa18756f722e1b56

  • SHA1

    c4483ac873b4ee8623a65e682ffaa0535091f56a

  • SHA256

    444169e156b48a54e9f96b6b3a1c333670546663c8a2e14e561884c052420043

  • SHA512

    6243310416203edf01d2c797c282005c20c49a22c8ab64b8a51967dda7e50f1a1ac89a61694b1277019c5373f3bf7262a13e783d4018884bbb9f3c9703bf9e34

Score
10/10
netwalkerpersistenceransomwarespyware

Malware Config

Extracted

Path

C:\Program Files (x86)\Common Files\Adobe AIR\57A070-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .57a070 -- 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_57a070: hj7Jkx25yAHPyNluj64mUvpr83pqfIoaq4a1pWNMcdROvzy2rx c7zQhGtKzNjaHjb92FZ4PjxTWSdPSGML8JZSdwkhnQdOIR7be8 iSSNsY5brhge8FXJYp0gCnpkdomuPFfOJ709Z/NVfaxIxk/qz6 8GO7yigTlov78diX5IthxRisqP2/wwXER0CMalWg0q8dtIHBWX j5BlS/bYebp8/5DwD7GieDLUdv4ER8Su7yN0d938eqsmcR+Ojz kFWyRxK9WLH9CsNntBnVkgPcxAlfg+n/vMq4COiw==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files\Java\jdk1.7.0_80\57A070-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .57a070 -- 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_57a070: hj7Jkx25yAHPyNluj64mUvpr83pqfIoaq4a1pWNMcdROvzy2rx c7zQhGtKzNjaHjb92FZ4PjxTWSdPSGML8JZSdwkhnQdOIR7be8 iSSNsY5brhge8FXJYp0gCnpkdomuPFfOJ709Z/NVfaxIxk/qz6 8GO7yigTlov78diX5IthxRisqP2/wwXER0CMalWg0q8dtIHBWX j5BlS/bYebp8/5DwD7GieDLUdv4ER8Su7yN0d938eqsmcR+Ojz kFWyRxK9WLH9CsNntBnVkgPcxAlfg+n/vMq4COiw==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .57a070 -- 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_57a070: hj7Jkx25yAHPyNluj64mUvpr83pqfIoaq4a1pWNMcdROvzy2rx c7zQhGtKzNjaHjb92FZ4PjxTWSdPSGML8JZSdwkhnQdOIR7be8 iSSNsY5brhge8FXJYp0gCnpkdomuPFfOJ709Z/NVfaxIxk/qz6 8GO7yigTlov78diX5IthxRisqP2/wwXER0CMalWg0q8dtIHBWX j5BlS/bYebp8/5DwD7GieDLUdv4ER8Su7yN0d938eqsmcR+Ojz kFWyRxK9WLH9CsNntBnVkgPcxAlfg+n/vMq4COiw==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\ProgramData\Microsoft\Assistance\Client\1.0\en-US\57A070-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .57a070 -- 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_57a070: hj7Jkx25yAHPyNluj64mUvpr83pqfIoaq4a1pWNMcdROvzy2rx c7zQhGtKzNjaHjb92FZ4PjxTWSdPSGML8JZSdwkhnQdOIR7be8 iSSNsY5brhge8FXJYp0gCnpkdomuPFfOJ709Z/NVfaxIxk/qz6 8GO7yigTlov78diX5IthxRisqP2/wwXER0CMalWg0q8dtIHBWX j5BlS/bYebp8/5DwD7GieDLUdv4ER8Su7yN0d938eqsmcR+Ojz kFWyRxK9WLH9CsNntBnVkgPcxAlfg+n/vMq4COiw==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .57a070 -- 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_57a070: hj7Jkx25yAHPyNluj64mUvpr83pqfIoaq4a1pWNMcdROvzy2rx c7zQhGtKzNjaHjb92FZ4PjxTWSdPSGML8JZSdwkhnQdOIR7be8 iSSNsY5brhge8FXJYp0gCnpkdomuPFfOJ709Z/NVfaxIxk/qz6 8GO7yigTlov78diX5IthxRisqP2/wwXER0CMalWg0q8dtIHBWX j5BlS/bYebp8/5DwD7GieDLUdv4ER8Su7yN0d938eqsmcR+Ojz kFWyRxK9WLH9CsNntBnVkgPcxAlfg+n/vMq4COiw==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .57a070 -- 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_57a070: hj7Jkx25yAHPyNluj64mUvpr83pqfIoaq4a1pWNMcdROvzy2rx c7zQhGtKzNjaHjb92FZ4PjxTWSdPSGML8JZSdwkhnQdOIR7be8 iSSNsY5brhge8FXJYp0gCnpkdomuPFfOJ709Z/NVfaxIxk/qz6 8GO7yigTlov78diX5IthxRisqP2/wwXER0CMalWg0q8dtIHBWX j5BlS/bYebp8/5DwD7GieDLUdv4ER8Su7yN0d938eqsmcR+Ojz kFWyRxK9WLH9CsNntBnVkgPcxAlfg+n/vMq4COiw==}
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 12 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 7474 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 20306 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\444169e156b48a54e9f96b6b3a1c333670546663c8a2e14e561884c052420043.exe
    "C:\Users\Admin\AppData\Local\Temp\444169e156b48a54e9f96b6b3a1c333670546663c8a2e14e561884c052420043.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:1084
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1288
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\57A070-Readme.txt"
      2⤵
        PID:1300
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c "C:\Users\Admin\AppData\Local\Temp\ECCF.tmp.bat"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:3196
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1084
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:3264
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:5292

    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\ECCF.tmp.bat
      MD5

      f4498f15a0e5883e6759b019ef17e4d4

      SHA1

      31688ee482e6c072b495b2bfff0a399cc6f70726

      SHA256

      0b42bb3a2fd15529c144794110d27994b82eeeeeb97a4c7758407fba184cd303

      SHA512

      b78975c11b9759052b98d4d7629b5f31f6ae67a85f0041dfc1813cfa42c43a2beaa610953fae920428feb0d2d7198b58dab3e9cc63a8f17b26d01a193967c660

      Download Submit
    • C:\Users\Admin\Desktop\57A070-Readme.txt
      MD5

      dfa91257c2e9ecd8c2ac1923779fb4bc

      SHA1

      f38c6567a1ea3dbd7ecf903311000d5457652986

      SHA256

      44432709d1c83a168e552b242b09ba50a1feefdf0c5c4510bbd3cd16968dcb69

      SHA512

      50916e1f3b8c641dcd953450044e133c272b9daaaa09216d080b9410a4ad15f1bbcfda6c3669c24e984e4efdb4ad624782985df82460a2f8c52d84a303a5053c

      Download Submit
    • memory/1288-0-0x0000000000000000-mapping.dmp
      Download
    • memory/1300-3-0x0000000000000000-mapping.dmp
      Download
    • memory/3196-4-0x0000000000000000-mapping.dmp
      Download
    • memory/3264-7-0x0000000000000000-mapping.dmp
      Download