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Overview

overview

10

Static

static

5b1ab6fae0...b5.exe

windows7_x64

10

5b1ab6fae0...b5.exe

windows10-2004_x64

1

Analysis

  • max time kernel
    184s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20/02/2022, 06:57

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General

  • Target

    5b1ab6fae05ca9005ee7026cc30fb79780c470d6a920a63383c3496381778fb5.exe

  • Size

    129KB

  • MD5

    d7697d0d692bd883e53036b906108d56

  • SHA1

    cbff9d66d68fa67e40ca4a295daed68f0d5f8383

  • SHA256

    5b1ab6fae05ca9005ee7026cc30fb79780c470d6a920a63383c3496381778fb5

  • SHA512

    6b2dc807abecb6075e754c49baf703ec44ea9e45ae82ffdef855bbae85768605696071c8c7a3e333ce363df7434d2613be4db2052fe56ed30cab7154cd9246f6

Score
10/10
ryukransomware

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] You will receive btc address for payment in the reply letter Ryuk No system is safe

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

    ransomwareryuk
  • Drops desktop.ini file(s) 53 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 13 IoCs
  • Suspicious use of SendNotifyMessage 12 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1416
    • C:\Users\Admin\AppData\Local\Temp\5b1ab6fae05ca9005ee7026cc30fb79780c470d6a920a63383c3496381778fb5.exe
      "C:\Users\Admin\AppData\Local\Temp\5b1ab6fae05ca9005ee7026cc30fb79780c470d6a920a63383c3496381778fb5.exe"
      2⤵
      • Drops desktop.ini file(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1680
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1352
    • C:\Windows\system32\taskhost.exe
      "taskhost.exe"
      1⤵
      • Drops desktop.ini file(s)
      • Suspicious use of AdjustPrivilegeToken
      PID:1260

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

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    Downloads

    • memory/1260-55-0x000000013F0A0000-0x000000013F423000-memory.dmp

      Filesize

      3.5MB

      Download

    • memory/1260-54-0x000000013F0A0000-0x000000013F423000-memory.dmp

      Filesize

      3.5MB

      Download