Overview

overview

10

Static

static

97f96adce3...a5.exe

windows7_x64

10

97f96adce3...a5.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    200s
  • max time network
    210s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    20-02-2022 04:16

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General

  • Target

    97f96adce3c5f14cc0c061abe98555bc9ac042100af5db0226aa9e10f34430a5.exe

  • Size

    384KB

  • MD5

    002e3ea0f8a404171a0995a8cbce2588

  • SHA1

    fbf489d4114a585fcb4af427f8c44cb661de0f74

  • SHA256

    97f96adce3c5f14cc0c061abe98555bc9ac042100af5db0226aa9e10f34430a5

  • SHA512

    dc8551f5c4ca02b156012852d578ffc73c2f66aab329cd5ab4c8857f666d00092b37d29bcc2c83555c97c56dea25d46b4546a91afba9e54e3446badcc8d3a9ea

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
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 2 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 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
      PID:3676
    • C:\Windows\System32\RuntimeBroker.exe
      C:\Windows\System32\RuntimeBroker.exe -Embedding
      1⤵
        PID:3616
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:3208
        • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
          "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
          1⤵
            PID:2204
          • C:\Windows\System32\RuntimeBroker.exe
            C:\Windows\System32\RuntimeBroker.exe -Embedding
            1⤵
            • Suspicious use of UnmapMainImage
            PID:3000
          • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
            "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
            1⤵
              PID:2828
              • C:\Windows\system32\WerFault.exe
                C:\Windows\system32\WerFault.exe -u -p 2828 -s 3220
                2⤵
                • Program crash
                • Suspicious behavior: EnumeratesProcesses
                PID:2464
            • C:\Windows\system32\DllHost.exe
              C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
              1⤵
              • Suspicious use of WriteProcessMemory
              PID:2652
              • C:\Windows\system32\WerFault.exe
                C:\Windows\system32\WerFault.exe -u -p 2652 -s 388
                2⤵
                • Program crash
                • Suspicious behavior: EnumeratesProcesses
                PID:1008
              • C:\Windows\system32\WerFault.exe
                C:\Windows\system32\WerFault.exe -u -p 2652 -s 388
                2⤵
                • Program crash
                PID:3112
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p
              1⤵
                PID:2456
              • C:\Windows\system32\taskhostw.exe
                taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                1⤵
                  PID:2208
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k UnistackSvcGroup
                  1⤵
                    PID:2160
                  • C:\Windows\system32\sihost.exe
                    sihost.exe
                    1⤵
                    • Drops file in Program Files directory
                    PID:2140
                  • C:\Users\Admin\AppData\Local\Temp\97f96adce3c5f14cc0c061abe98555bc9ac042100af5db0226aa9e10f34430a5.exe
                    "C:\Users\Admin\AppData\Local\Temp\97f96adce3c5f14cc0c061abe98555bc9ac042100af5db0226aa9e10f34430a5.exe"
                    1⤵
                    • Checks computer location settings
                    • Suspicious use of WriteProcessMemory
                    PID:2232
                    • C:\users\Public\uDqLV.exe
                      "C:\users\Public\uDqLV.exe" C:\Users\Admin\AppData\Local\Temp\97f96adce3c5f14cc0c061abe98555bc9ac042100af5db0226aa9e10f34430a5.exe
                      2⤵
                      • Executes dropped EXE
                      • Checks computer location settings
                      • Suspicious behavior: EnumeratesProcesses
                      • Suspicious use of AdjustPrivilegeToken
                      • Suspicious use of WriteProcessMemory
                      PID:3684
                      • 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\Public\uDqLV.exe" /f
                        3⤵
                        • Suspicious use of WriteProcessMemory
                        PID:1020
                        • C:\Windows\system32\reg.exe
                          REG ADD "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "svchos" /t REG_SZ /d "C:\users\Public\uDqLV.exe" /f
                          4⤵
                          • Adds Run key to start application
                          PID:2608
                  • C:\Windows\system32\svchost.exe
                    C:\Windows\system32\svchost.exe -k wusvcs -p
                    1⤵
                      PID:2052
                    • C:\Windows\system32\WerFault.exe
                      C:\Windows\system32\WerFault.exe -pss -s 416 -p 2652 -ip 2652
                      1⤵
                      • Suspicious use of NtCreateProcessExOtherParentProcess
                      • Suspicious use of WriteProcessMemory
                      PID:3716
                    • C:\Windows\system32\WerFault.exe
                      C:\Windows\system32\WerFault.exe -pss -s 452 -p 2828 -ip 2828
                      1⤵
                      • Suspicious use of NtCreateProcessExOtherParentProcess
                      • Suspicious use of WriteProcessMemory
                      PID:2908

                    Network

                    MITRE ATT&CK Enterprise v6

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                    Downloads

                    • memory/2140-132-0x00007FF6EF480000-0x00007FF6EF80E000-memory.dmp

                      Filesize

                      3.6MB

                      Download

                    • memory/2160-133-0x00007FF6EF480000-0x00007FF6EF80E000-memory.dmp

                      Filesize

                      3.6MB

                      Download