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Overview

overview

10

Static

static

f48c52b820...21.exe

windows7_x64

10

f48c52b820...21.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    161s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20/02/2022, 00:20

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General

  • Target

    f48c52b820c7ec36afb411dc052d83ced667db46d5b9b729748e73fb70cb1421.exe

  • Size

    151KB

  • MD5

    a0a2c05256ee2727a2dfade4dc7544d6

  • SHA1

    fba2fbb09c96de73c903ab40894225cc235bdcfe

  • SHA256

    f48c52b820c7ec36afb411dc052d83ced667db46d5b9b729748e73fb70cb1421

  • SHA512

    48c10e276f2455a29b352db81e72fa1b7bbbe3ef46e8998e1e44900e97cc3fa5682e424fbb0680594dcc45b2003c20bae15fc46f2822001d7669d7b1b7335ddf

Score
10/10
ryukpersistenceransomware

Malware Config

Extracted

Path

C:\RyukReadMe.txt

Family

ryuk

Ransom Note
Your network has been penetrated. All files on each host in the network have been encrypted with a strong algorithm. Backups were either encrypted Shadow copies also removed, so F8 or any other methods may damage encrypted data but not recover. We exclusively have decryption software for your situation. More than a year ago, world experts recognized the impossibility of deciphering by any means except the original decoder. No decryption software is available in the public. Antiviruse companies, researchers, IT specialists, and no other persons cant help you encrypt the data. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT DELETE readme files. To confirm our honest intentions.Send 2 different random files and you will get it decrypted. It can be from different computers on your network to be sure that one key decrypts everything. 2 files we unlock for free To get info (decrypt your files) contact us at [email protected] or [email protected] BTC wallet: 1ET85GTps8eFbgF1MvVhFVZQeNp2a6LeGw Ryuk No system is safe
Wallets

1ET85GTps8eFbgF1MvVhFVZQeNp2a6LeGw

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

    ransomwareryuk
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1252
    • C:\Windows\system32\taskhost.exe
      "taskhost.exe"
      1⤵
      • Drops file in Program Files directory
      PID:1140
    • C:\Users\Admin\AppData\Local\Temp\f48c52b820c7ec36afb411dc052d83ced667db46d5b9b729748e73fb70cb1421.exe
      "C:\Users\Admin\AppData\Local\Temp\f48c52b820c7ec36afb411dc052d83ced667db46d5b9b729748e73fb70cb1421.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1888
      • C:\Windows\System32\cmd.exe
        "C:\Windows\System32\cmd.exe" /C REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\f48c52b820c7ec36afb411dc052d83ced667db46d5b9b729748e73fb70cb1421.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1224
        • C:\Windows\system32\reg.exe
          REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\f48c52b820c7ec36afb411dc052d83ced667db46d5b9b729748e73fb70cb1421.exe" /f
          3⤵
          • Adds Run key to start application
          PID:544

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1140-55-0x000000013F1B0000-0x000000013F539000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1140-57-0x000000013F1B0000-0x000000013F539000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1888-54-0x000007FEFC511000-0x000007FEFC513000-memory.dmp

      Filesize

      8KB

      Download