Overview

overview

10

Static

static

5d92914acd...71.exe

windows7_x64

10

5d92914acd...71.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    195s
  • max time network
    217s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220113
  • submitted
    20-02-2022 06:49

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General

  • Target

    5d92914acdfb551c237866cc4cce6c80aeeeb695e52beecd2613694302c62271.exe

  • Size

    140KB

  • MD5

    6cdcb9f86972efc4cfce4b06b6be053a

  • SHA1

    b928d01d3d7d2759bc80899e61d3053948419366

  • SHA256

    5d92914acdfb551c237866cc4cce6c80aeeeb695e52beecd2613694302c62271

  • SHA512

    8571bb5cb9d0f12a818a72e94cac28b9609b118d69bcbf1118e509eebb36905934203550c2624b6d1910fe8fc0c4310adcb7a779abbc37277c4b9ab714f7fd36

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
  • 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:3500
    • C:\Windows\system32\backgroundTaskHost.exe
      "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
      1⤵
        PID:1952
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:1300
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:3268
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
              PID:3780
            • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
              "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
              1⤵
                PID:3584
              • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                1⤵
                  PID:3436
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                  1⤵
                    PID:3332
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p -s cbdhsvc
                    1⤵
                      PID:3132
                    • C:\Windows\system32\taskhostw.exe
                      taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                      1⤵
                        PID:2404
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
                        1⤵
                          PID:2304
                        • C:\Windows\system32\sihost.exe
                          sihost.exe
                          1⤵
                            PID:2284
                          • C:\Users\Admin\AppData\Local\Temp\5d92914acdfb551c237866cc4cce6c80aeeeb695e52beecd2613694302c62271.exe
                            "C:\Users\Admin\AppData\Local\Temp\5d92914acdfb551c237866cc4cce6c80aeeeb695e52beecd2613694302c62271.exe"
                            1⤵
                            • Checks computer location settings
                            • Drops file in Program Files directory
                            • Suspicious behavior: EnumeratesProcesses
                            • Suspicious use of AdjustPrivilegeToken
                            • Suspicious use of WriteProcessMemory
                            PID:4740
                            • 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\5d92914acdfb551c237866cc4cce6c80aeeeb695e52beecd2613694302c62271.exe" /f /reg:64
                              2⤵
                              • Suspicious use of WriteProcessMemory
                              PID:1344
                              • 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\5d92914acdfb551c237866cc4cce6c80aeeeb695e52beecd2613694302c62271.exe" /f /reg:64
                                3⤵
                                • Adds Run key to start application
                                PID:2364

                          Network

                          MITRE ATT&CK Enterprise v6

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