Analysis

  • max time kernel
    158s
  • max time network
    62s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:17

General

  • Target

    b2d68a79a621c3f9e46f9df52ed19b8fec22c3cf5f4e3d8630a2bc68fd43d2ee.bin.exe

  • Size

    69KB

  • MD5

    f957f19cd9d71abe3cb980ebe7f75d72

  • SHA1

    96432d979fdec055e4f40845a27cf4a9c0a0a34b

  • SHA256

    b2d68a79a621c3f9e46f9df52ed19b8fec22c3cf5f4e3d8630a2bc68fd43d2ee

  • SHA512

    26a1375d5893ee5e80ba2e47d92ed559f82acd539dcff785bbc52e7df226655192047e5b6f80e61f8076dab42f28d48e04e3fd4f80309cc4d0720a50db4393f7

Malware Config

Extracted

Path

C:\A2400D-Readme.txt

Ransom Note
Hi InventUsPower, Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .a2400d -- 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_a2400d: wJl7aCqUY92PDiFAQ4KzM61ISfEhSEuAia/vFJhW6h2S8dfENl qN4eNcUBOAK3m18+cxxBfN9dMuH0aVvAoHubDMKMJd/IIEqxa+ Hu/qsi8uwVcxpkLYELW6y6JIG78YlmCF6F9uxo2j1bctqVv8D1 AF7WOh5uL1iT/2p+NePbDoD79D7g233tFz6yHHgFDveGmZwPOd fgg3+aqawY4ZLIGkQIFUJTu2N1QrKW3/jHSoT31lJHHmX/dBDW sjbQyC4EMWtDEs+ubb2j0Foo5cJ28Mm8/VREhvYQ==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Stationery\1033\A2400D-Readme.txt

Ransom Note
Hi InventUsPower, Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .a2400d -- 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_a2400d: wJl7aCqUY92PDiFAQ4KzM61ISfEhSEuAia/vFJhW6h2S8dfENl qN4eNcUBOAK3m18+cxxBfN9dMuH0aVvAoHubDMKMJd/IIEqxa+ Hu/qsi8uwVcxpkLYELW6y6JIG78YlmCF6F9uxo2j1bctqVv8D1 AF7WOh5uL1iT/2p+NePbDoD79D7g233tFz6yHHgFDveGmZwPOd fgg3+aqawY4ZLIGkQIFUJTu2N1QrKW3/jHSoT31lJHHmX/dBDW sjbQyC4EMWtDEs+ubb2j0Foo5cJ28Mm8/VREhvYQ==}Hi InventUsPower, Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .a2400d -- 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_a2400d: wJl7aCqUY92PDiFAQ4KzM61ISfEhSEuAia/vFJhW6h2S8dfENl qN4eNcUBOAK3m18+cxxBfN9dMuH0aVvAoHubDMKMJd/IIEqxa+ Hu/qsi8uwVcxpkLYELW6y6JIG78YlmCF6F9uxo2j1bctqVv8D1 AF7WOh5uL1iT/2p+NePbDoD79D7g233tFz6yHHgFDveGmZwPOd fgg3+aqawY4ZLIGkQIFUJTu2N1QrKW3/jHSoT31lJHHmX/dBDW sjbQyC4EMWtDEs+ubb2j0Foo5cJ28Mm8/VREhvYQ==}Hi InventUsPower, Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .a2400d -- 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_a2400d: wJl7aCqUY92PDiFAQ4KzM61ISfEhSEuAia/vFJhW6h2S8dfENl qN4eNcUBOAK3m18+cxxBfN9dMuH0aVvAoHubDMKMJd/IIEqxa+ Hu/qsi8uwVcxpkLYELW6y6JIG78YlmCF6F9uxo2j1bctqVv8D1 AF7WOh5uL1iT/2p+NePbDoD79D7g233tFz6yHHgFDveGmZwPOd fgg3+aqawY4ZLIGkQIFUJTu2N1QrKW3/jHSoT31lJHHmX/dBDW sjbQyC4EMWtDEs+ubb2j0Foo5cJ28Mm8/VREhvYQ==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Document Themes 14\A2400D-Readme.txt

Ransom Note
Hi InventUsPower, Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .a2400d -- 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_a2400d: wJl7aCqUY92PDiFAQ4KzM61ISfEhSEuAia/vFJhW6h2S8dfENl qN4eNcUBOAK3m18+cxxBfN9dMuH0aVvAoHubDMKMJd/IIEqxa+ Hu/qsi8uwVcxpkLYELW6y6JIG78YlmCF6F9uxo2j1bctqVv8D1 AF7WOh5uL1iT/2p+NePbDoD79D7g233tFz6yHHgFDveGmZwPOd fgg3+aqawY4ZLIGkQIFUJTu2N1QrKW3/jHSoT31lJHHmX/dBDW sjbQyC4EMWtDEs+ubb2j0Foo5cJ28Mm8/VREhvYQ==}Hi InventUsPower, Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .a2400d -- 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_a2400d: wJl7aCqUY92PDiFAQ4KzM61ISfEhSEuAia/vFJhW6h2S8dfENl qN4eNcUBOAK3m18+cxxBfN9dMuH0aVvAoHubDMKMJd/IIEqxa+ Hu/qsi8uwVcxpkLYELW6y6JIG78YlmCF6F9uxo2j1bctqVv8D1 AF7WOh5uL1iT/2p+NePbDoD79D7g233tFz6yHHgFDveGmZwPOd fgg3+aqawY4ZLIGkQIFUJTu2N1QrKW3/jHSoT31lJHHmX/dBDW sjbQyC4EMWtDEs+ubb2j0Foo5cJ28Mm8/VREhvYQ==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 3 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Modifies service 2 TTPs 5 IoCs
  • Drops file in Program Files directory 3635 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 24011 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b2d68a79a621c3f9e46f9df52ed19b8fec22c3cf5f4e3d8630a2bc68fd43d2ee.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\b2d68a79a621c3f9e46f9df52ed19b8fec22c3cf5f4e3d8630a2bc68fd43d2ee.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:1316
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1292
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Modifies service
    • Suspicious use of AdjustPrivilegeToken
    PID:3216

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Defense Evasion

File Deletion

2
T1107

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

2
T1490

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1292-0-0x0000000000000000-mapping.dmp