Overview

overview

10

Static

static

47618ca960...42.exe

windows7_x64

10

47618ca960...42.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    192s
  • max time network
    208s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    20-02-2022 07:47

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General

  • Target

    47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe

  • Size

    170KB

  • MD5

    552ad0a68c4a1fe2ff797269dd0a577c

  • SHA1

    bd88287ed069606d736603432099a687dd556942

  • SHA256

    47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642

  • SHA512

    7e064b91d5cb4fa0c66d5ab8d4df936580faa42fe9e477e51b8f341d7e37c0c0465de9700a6f8b0b22ea05c556a62d6c572f58fdead790be05fbdf97a92827c0

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 2 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
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 2 IoCs
  • Modifies data under HKEY_USERS 45 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs

Processes

  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
      PID:2964
    • C:\Windows\system32\backgroundTaskHost.exe
      "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
      1⤵
        PID:1072
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
        • Modifies registry class
        PID:4060
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:3608
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:3100
          • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
            "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
            1⤵
              PID:3044
            • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
              "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
              1⤵
                PID:2888
                • C:\Windows\system32\WerFault.exe
                  C:\Windows\system32\WerFault.exe -u -p 2888 -s 2580
                  2⤵
                  • Program crash
                  • Suspicious behavior: EnumeratesProcesses
                  PID:4412
              • C:\Windows\system32\DllHost.exe
                C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
                1⤵
                • Suspicious use of WriteProcessMemory
                PID:2724
                • C:\Windows\system32\WerFault.exe
                  C:\Windows\system32\WerFault.exe -u -p 2724 -s 1012
                  2⤵
                  • Program crash
                  • Suspicious behavior: EnumeratesProcesses
                  PID:1588
              • C:\Windows\system32\svchost.exe
                C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p
                1⤵
                  PID:2520
                • 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:2232
                    • C:\Windows\system32\sihost.exe
                      sihost.exe
                      1⤵
                      • Drops file in Program Files directory
                      PID:2216
                    • C:\Users\Admin\AppData\Local\Temp\47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe
                      "C:\Users\Admin\AppData\Local\Temp\47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe"
                      1⤵
                      • Checks computer location settings
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      • Suspicious use of WriteProcessMemory
                      PID:1488
                      • 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\47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe" /f
                        2⤵
                        • Suspicious use of WriteProcessMemory
                        PID:1308
                        • 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\47618ca96047204dadb4207f4c7f304687ae4164a13d54e2f9805279e58b1642.exe" /f
                          3⤵
                          • Adds Run key to start application
                          PID:1368
                    • C:\Windows\system32\WerFault.exe
                      C:\Windows\system32\WerFault.exe -pss -s 428 -p 1072 -ip 1072
                      1⤵
                      • Suspicious use of NtCreateProcessExOtherParentProcess
                      PID:4260
                    • C:\Windows\system32\WerFault.exe
                      C:\Windows\system32\WerFault.exe -pss -s 504 -p 2888 -ip 2888
                      1⤵
                      • Suspicious use of NtCreateProcessExOtherParentProcess
                      • Suspicious use of WriteProcessMemory
                      PID:4280
                    • C:\Windows\System32\svchost.exe
                      C:\Windows\System32\svchost.exe -k NetworkService -p
                      1⤵
                      • Drops file in Windows directory
                      • Modifies data under HKEY_USERS
                      PID:4436

                    Network

                    MITRE ATT&CK Enterprise v6

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                    Downloads

                    • memory/2216-130-0x00007FF74FD00000-0x00007FF75008E000-memory.dmp

                      Filesize

                      3.6MB

                      Download

                    • memory/2232-131-0x00007FF74FD00000-0x00007FF75008E000-memory.dmp

                      Filesize

                      3.6MB

                      Download