Overview

overview

10

Static

static

094e91e2ae...1c.exe

windows7_x64

10

094e91e2ae...1c.exe

windows10-2004_x64

7

Analysis

  • max time kernel
    176s
  • max time network
    37s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    19-02-2022 08:30

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General

  • Target

    094e91e2ae1cdd89fe7aaf9053e042cabcdb6eaf27789dd331802c08ae29fd1c.exe

  • Size

    170KB

  • MD5

    00f926cd4948652e3a80c3994e4ec8be

  • SHA1

    61bf4f8d8f9826b70bf730d4f84a584ee199325f

  • SHA256

    094e91e2ae1cdd89fe7aaf9053e042cabcdb6eaf27789dd331802c08ae29fd1c

  • SHA512

    d53edde17520f1512aa84dc1bf9d93c456c9cd037edb69c7f34dbbb4d9cad6a952b3a883c518ae70959b7285c930bd7b96b4939156e3e996ce2fad1a8d3fb51b

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 9 IoCs

Processes

  • C:\Windows\system32\Dwm.exe
    "C:\Windows\system32\Dwm.exe"
    1⤵
      PID:1236
    • C:\Windows\system32\taskhost.exe
      "taskhost.exe"
      1⤵
      • Drops file in Program Files directory
      PID:1144
    • C:\Users\Admin\AppData\Local\Temp\094e91e2ae1cdd89fe7aaf9053e042cabcdb6eaf27789dd331802c08ae29fd1c.exe
      "C:\Users\Admin\AppData\Local\Temp\094e91e2ae1cdd89fe7aaf9053e042cabcdb6eaf27789dd331802c08ae29fd1c.exe"
      1⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1364
      • 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\094e91e2ae1cdd89fe7aaf9053e042cabcdb6eaf27789dd331802c08ae29fd1c.exe" /f
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:676
        • 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\094e91e2ae1cdd89fe7aaf9053e042cabcdb6eaf27789dd331802c08ae29fd1c.exe" /f
          3⤵
          • Adds Run key to start application
          PID:1504

    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/676-60-0x000000013F840000-0x000000013FBCE000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1144-55-0x000000013F840000-0x000000013FBCE000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1144-56-0x000000013F840000-0x000000013FBCE000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1236-59-0x000000013F840000-0x000000013FBCE000-memory.dmp
      Filesize

      3.6MB

      Download
    • memory/1364-54-0x000007FEFC3C1000-0x000007FEFC3C3000-memory.dmp
      Filesize

      8KB

      Download