Analysis

  • max time kernel
    155s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    01-02-2022 01:36

General

  • Target

    11117145652ed5e6cb36a8480fc4da64de65a784510d3240548869af056dcde8.exe

  • Size

    69KB

  • MD5

    412a0cf41cc1e85ac7ffdc0ccebd5475

  • SHA1

    b86332d642d62fc945c015e3ae2f942a844ab948

  • SHA256

    11117145652ed5e6cb36a8480fc4da64de65a784510d3240548869af056dcde8

  • SHA512

    6830bc65ea37f5593b60923f37aab8e2aaea29230e110b44d45225361978253eb8a0066d73e3376cea69dc1d0af5b80c66c8e381dc2207041ae56836bcaa2c59

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Roaming\AD0D48-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .ad0d48 -- 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. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- 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_ad0d48: XeyKZCvLaTP9DZCepmr5TlW25s1x5rGWgxtN5DTLAsYTXlLzXo Ipp6xKBuSKG9RpQGRznYnDClTSzse6eygql0gZ5QohoIk1Np6R qi/e675a6S1bUjQYsD1shBjpOtxUxLxOeSXVcz2jyrFrAVoHzY JuGN5Xg3OH0PYCjP0B4I+10hlxuQjK3Qs4fNpjJsIGM6G/yatS q4rg64Ha25GtHHrKZ+Nmyjx7HEYXfTFOI2Tt4/rmjug0nuF7m+ U08HAZaMivv0ACfc0xlbvjpv3PUllrUAksF0y2xQ==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

  • Netwalker Ransomware

    Ransomware family with multiple versions. Also known as MailTo.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Reads user/profile data of web browsers 2 TTPs

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

  • 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.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\11117145652ed5e6cb36a8480fc4da64de65a784510d3240548869af056dcde8.exe
    "C:\Users\Admin\AppData\Local\Temp\11117145652ed5e6cb36a8480fc4da64de65a784510d3240548869af056dcde8.exe"
    1⤵
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:960
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:700
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2664

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/960-54-0x00000000751B1000-0x00000000751B3000-memory.dmp

    Filesize

    8KB

  • memory/960-55-0x00000000048D0000-0x000000000494D000-memory.dmp

    Filesize

    500KB