Overview

overview

10

Static

static

10

8e0589b598...f5.exe

windows7_x64

8e0589b598...f5.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    186s
  • max time network
    198s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    01-02-2022 01:28

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General

  • Target

    8e0589b59866389754b78dd818f7b6727f532ef8834d99c0636cb7e0a5b3bdf5.exe

  • Size

    148KB

  • MD5

    72f9a9f3380f09f03b6b85a68dde79df

  • SHA1

    89dbeae64eaf6e9ed6bde9b7cb927b58962dde59

  • SHA256

    8e0589b59866389754b78dd818f7b6727f532ef8834d99c0636cb7e0a5b3bdf5

  • SHA512

    09f55ce2afa4080befe8ee36d2d8fc0a4cbb60d80b273cf7f18a74c658263745ea06ffbfa7dd8a08d19e93412d48408b2545e3533f674a5612ccf83564d95a9d

Score
10/10
netwalkerransomwarespywarestealer

Malware Config

Extracted

Path

C:\Program Files\F90D05-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f90d05 -- 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_f90d05: 2h8FJqhPl9aMHorROTS7t4bghMV8XsnIBBJ07paMRzjBCb7MBA 4Vb/X/wb2qzOp/jPKPuMx4Z+nQziQoYWMQQmDYCaIEGFsM41Zj AhYISSmtvw7PhGoGeVAOGXFMz2ZT9/E5nhQmif8AZ2R+ksQxJs J99yfTMaXcqwpyZGdI6QVevq15qpnq22sOgGAcTIFW75X7ct5T +QuEIeCSF3KYLRrWRYX+mCQBe6o1GspJPw/CMdFX7hcLUZa0T9 p7pm5ki/3fMNLMd/bZzzIpSwX9RY+eh0X0j9erCg==}
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
  • 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
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8e0589b59866389754b78dd818f7b6727f532ef8834d99c0636cb7e0a5b3bdf5.exe
    "C:\Users\Admin\AppData\Local\Temp\8e0589b59866389754b78dd818f7b6727f532ef8834d99c0636cb7e0a5b3bdf5.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2288
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:2444
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:4744

Network

MITRE ATT&CK Enterprise v6

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