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Overview

overview

10

Static

static

8

611756d16d...85.exe

windows7_x64

10

611756d16d...85.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    202s
  • max time network
    221s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    20/02/2022, 06:40

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General

  • Target

    611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe

  • Size

    315KB

  • MD5

    c1d23b26b074c453fc53c45c7674e32f

  • SHA1

    c39f9181564f7d945d7d95cdebcc069db7fc9e74

  • SHA256

    611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85

  • SHA512

    f72d1a8018ccc3953d5d5d36ca5dcf1f3bee4d2f33d79a68cca2b33c3e6f18018f8459046bba7998fd9b6c58c0a20ef1273b1824a0980df15b2c954ae0221121

Score
10/10
ryukpersistenceransomwarevmprotect

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
  • VMProtect packed file 1 IoCs

    Detects executables packed with VMProtect commercial packer.

    vmprotect
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
      PID:3420
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
        PID:3352
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:3748
        • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
          "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
          1⤵
            PID:3496
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:3260
            • C:\Windows\system32\backgroundTaskHost.exe
              "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
              1⤵
                PID:388
              • C:\Windows\System32\RuntimeBroker.exe
                C:\Windows\System32\RuntimeBroker.exe -Embedding
                1⤵
                  PID:384
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                  1⤵
                    PID:3252
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                    1⤵
                      PID:2800
                    • C:\Windows\system32\taskhostw.exe
                      taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                      1⤵
                        PID:2432
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                        1⤵
                          PID:2356
                        • C:\Windows\system32\sihost.exe
                          sihost.exe
                          1⤵
                            PID:2340
                          • C:\Users\Admin\AppData\Local\Temp\611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe
                            "C:\Users\Admin\AppData\Local\Temp\611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe"
                            1⤵
                            • Checks computer location settings
                            • Drops file in Program Files directory
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:4212
                            • C:\Windows\SysWOW64\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\611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe" /f /reg:64
                              2⤵
                              • Suspicious use of WriteProcessMemory
                              PID:4728
                              • C:\Windows\SysWOW64\reg.exe
                                REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\611756d16d2c0e32589b0baa71b86a74ad6b0ce31957b3cb2ca78fee61c34b85.exe" /f /reg:64
                                3⤵
                                • Adds Run key to start application
                                PID:2328

                          Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

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                          Downloads

                          • memory/4212-130-0x0000000030000000-0x00000000303DE000-memory.dmp

                            Filesize

                            3.9MB

                            Download