Overview

overview

10

Static

static

6d768a860c...3d.exe

windows7_x64

10

6d768a860c...3d.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    186s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    20-02-2022 06:05

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General

  • Target

    6d768a860ccf91cc9cb4d127dd648d3b91d99e8c3467a8c45e5b0eb2a01acc3d.exe

  • Size

    170KB

  • MD5

    301b5d87092b4fc13dd4b05bff39ca9c

  • SHA1

    4b8a77b3d993a0be86fe1d8aa4fdb8c15ae05ab9

  • SHA256

    6d768a860ccf91cc9cb4d127dd648d3b91d99e8c3467a8c45e5b0eb2a01acc3d

  • SHA512

    1c508c1ccf4f3bb0cd0d9dba2af02612f4528b6d056c84f50bed65de3448f0b191bae3db953973bc75881f0805b6c3655d75b24b8e2775d096ddd115f234bfac

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:1248
  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1368
    • C:\Users\Admin\AppData\Local\Temp\6d768a860ccf91cc9cb4d127dd648d3b91d99e8c3467a8c45e5b0eb2a01acc3d.exe
      "C:\Users\Admin\AppData\Local\Temp\6d768a860ccf91cc9cb4d127dd648d3b91d99e8c3467a8c45e5b0eb2a01acc3d.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1156
      • 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\6d768a860ccf91cc9cb4d127dd648d3b91d99e8c3467a8c45e5b0eb2a01acc3d.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:460
        • 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\6d768a860ccf91cc9cb4d127dd648d3b91d99e8c3467a8c45e5b0eb2a01acc3d.exe" /f
          3⤵
          • Adds Run key to start application
          PID:612

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1156-54-0x000007FEFC3C1000-0x000007FEFC3C3000-memory.dmp

      Filesize

      8KB

      Download

    • memory/1248-55-0x000000013F860000-0x000000013FBEE000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1248-57-0x000000013F860000-0x000000013FBEE000-memory.dmp

      Filesize

      3.6MB

      Download

    • memory/1368-58-0x000000013F860000-0x000000013FBEE000-memory.dmp

      Filesize

      3.6MB

      Download