Overview

overview

10

Static

static

30f62448ef...81.exe

windows7_x64

10

30f62448ef...81.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    210s
  • max time network
    156s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 08:45

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General

  • Target

    30f62448ef138b7f9ed3662205421a97d15f5ffb36eae1a81e8c56053b128781.exe

  • Size

    170KB

  • MD5

    dd72a10cf4ee779c179d23ed6f4fdb01

  • SHA1

    adc7691b97f34a9d55a3f7ca8a60e1c8756e3631

  • SHA256

    30f62448ef138b7f9ed3662205421a97d15f5ffb36eae1a81e8c56053b128781

  • SHA512

    e63d0a3a3bad2a0899d2e815ef2bf13b2e9c7fa5fcf79194b58438120d8096d894905c63ca4eeb1ebe0d47a6b1b5a085d0936445a8a00e34e07f22b494d4c41e

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 or deleted or backup disks were formatted. 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 No decryption software is available in the public. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT RENAME OR MOVE the encrypted and readme files. DO NOT DELETE readme files. This may lead to the impossibility of recovery of the certain files. To get info (decrypt your files) contact us at [email protected] or [email protected] BTC wallet: 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk Ryuk No system is safe
Wallets

14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk

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 8 IoCs

Processes

  • C:\Windows\system32\taskhost.exe
    "taskhost.exe"
    1⤵
    • Drops file in Program Files directory
    PID:1116
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1172
    • C:\Users\Admin\AppData\Local\Temp\30f62448ef138b7f9ed3662205421a97d15f5ffb36eae1a81e8c56053b128781.exe
      "C:\Users\Admin\AppData\Local\Temp\30f62448ef138b7f9ed3662205421a97d15f5ffb36eae1a81e8c56053b128781.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1000
      • 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\30f62448ef138b7f9ed3662205421a97d15f5ffb36eae1a81e8c56053b128781.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:1632
        • 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\30f62448ef138b7f9ed3662205421a97d15f5ffb36eae1a81e8c56053b128781.exe" /f
          3⤵
          • Adds Run key to start application
          PID:1280

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Registry Run Keys / Startup Folder

    1
    T1060

    Privilege Escalation

    Defense Evasion

    Modify Registry

    1
    T1112

    Credential Access

    Discovery

    System Information Discovery

    1
    T1082

    Lateral Movement

    Collection

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • memory/1000-54-0x000007FEFB9C1000-0x000007FEFB9C3000-memory.dmp
      Filesize

      8KB

      Download
    • memory/1116-55-0x000000013F130000-0x000000013F4BE000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1116-57-0x000000013F130000-0x000000013F4BE000-memory.dmp
      Filesize

      3.6MB

      Download