Overview

overview

10

Static

static

0eb86390d1...d0.exe

windows7_x64

10

0eb86390d1...d0.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    174s
  • max time network
    191s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    19-02-2022 08:15

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General

  • Target

    0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe

  • Size

    170KB

  • MD5

    e83e446765df038755ff52cf5d311b6c

  • SHA1

    79f3c9691cd5d68ad289ba6a0c17e1a587d5c48b

  • SHA256

    0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0

  • SHA512

    f6bbb71e53ac8e61fff0cbb2ab4ab25b40d29f5a537379eb8339f552eac68b7237cfd2dcb77783d2faa6aa582cb70c3ce4703a7ed9ed0dacdf413c1d60b1c63e

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
  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • 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.

  • Program crash 2 IoCs
  • Modifies registry class 32 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Drops file in Program Files directory
    PID:2220
  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
      PID:2996
    • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
      1⤵
        PID:3068
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:3300
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
          • Modifies registry class
          PID:3396
        • C:\Windows\system32\backgroundTaskHost.exe
          "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:CortanaUI.AppX3bn25b6f886wmg6twh46972vprk9tnbf.mca
          1⤵
            PID:3748
          • C:\Windows\system32\backgroundTaskHost.exe
            "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
            1⤵
              PID:60
            • C:\Windows\System32\RuntimeBroker.exe
              C:\Windows\System32\RuntimeBroker.exe -Embedding
              1⤵
                PID:2776
              • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
                "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
                1⤵
                  PID:2936
                  • C:\Windows\system32\WerFault.exe
                    C:\Windows\system32\WerFault.exe -u -p 2936 -s 2424
                    2⤵
                    • Program crash
                    • Suspicious behavior: EnumeratesProcesses
                    PID:4524
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                  1⤵
                  • Suspicious use of WriteProcessMemory
                  PID:2744
                  • C:\Windows\system32\WerFault.exe
                    C:\Windows\system32\WerFault.exe -u -p 2744 -s 1004
                    2⤵
                    • Program crash
                    • Suspicious behavior: EnumeratesProcesses
                    PID:3320
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p
                  1⤵
                    PID:2536
                  • C:\Windows\system32\taskhostw.exe
                    taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                    1⤵
                      PID:2284
                    • C:\Windows\system32\svchost.exe
                      C:\Windows\system32\svchost.exe -k UnistackSvcGroup
                      1⤵
                        PID:2236
                      • C:\Users\Admin\AppData\Local\Temp\0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe
                        "C:\Users\Admin\AppData\Local\Temp\0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe"
                        1⤵
                        • Checks computer location settings
                        • Suspicious behavior: EnumeratesProcesses
                        • Suspicious use of AdjustPrivilegeToken
                        • Suspicious use of WriteProcessMemory
                        PID:3912
                        • 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\0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe" /f
                          2⤵
                          • Suspicious use of WriteProcessMemory
                          PID:1960
                          • 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\0eb86390d13f331d7fd777acd750a759e447c907e38653adb6508c12c41f03d0.exe" /f
                            3⤵
                            • Adds Run key to start application
                            PID:3948
                      • C:\Windows\system32\WerFault.exe
                        C:\Windows\system32\WerFault.exe -pss -s 424 -p 2936 -ip 2936
                        1⤵
                        • Suspicious use of NtCreateProcessExOtherParentProcess
                        • Suspicious use of WriteProcessMemory
                        PID:756

                      Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

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                      Downloads

                      • memory/2220-130-0x00007FF795920000-0x00007FF795CAE000-memory.dmp

                        Filesize

                        3.6MB

                        Download

                      • memory/2744-131-0x0000027EAF5B0000-0x0000027EAF5B8000-memory.dmp

                        Filesize

                        32KB

                        Download

                      • memory/2744-132-0x0000027EAF5A0000-0x0000027EAF5A1000-memory.dmp

                        Filesize

                        4KB

                        Download