Overview

overview

10

Static

static

d439abbc0c...dd.exe

windows7_x64

10

d439abbc0c...dd.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    204s
  • max time network
    235s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    20-02-2022 01:32

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General

  • Target

    d439abbc0c204aa869991837e62e7a5ebf30f5214e6f648c78dc812d4ffd62dd.exe

  • Size

    124KB

  • MD5

    4bb18d5e27f9e75b211f8053a1e0fb4f

  • SHA1

    4eb0d5fab83c5a92e442beee4b31a6cd7d05cf4e

  • SHA256

    d439abbc0c204aa869991837e62e7a5ebf30f5214e6f648c78dc812d4ffd62dd

  • SHA512

    bdb107f07beb782a1d90857cd3e895c7013ceb8b4dc78285014434214e9c34925e0c6ce8278b48acdcddeb1b430804f5a0c9398f7012f45d68a869dfd51fcaed

Score
10/10
ryukransomware

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 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. More than a year ago, world experts recognized the impossibility of deciphering by any means except the original decoder. No decryption software is available in the public. Antiviruse companies, researchers, IT specialists, and no other persons cant help you encrypt the data. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT DELETE readme files. To confirm our honest intentions.Send 2 different random files and you will get it decrypted. It can be from different computers on your network to be sure that one key decrypts everything. 2 files we unlock for free To get info (decrypt your files) contact us at [email protected] or [email protected] You will receive btc address for payment in the reply letter Ryuk No system is safe

Signatures

  • Ryuk

    Ransomware distributed via existing botnets, often Trickbot or Emotet.

    ransomwareryuk
  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • Drops desktop.ini file(s) 3 IoCs
  • Program crash 2 IoCs
  • Modifies data under HKEY_USERS 19 IoCs
  • Modifies registry class 59 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Windows\System32\RuntimeBroker.exe
    C:\Windows\System32\RuntimeBroker.exe -Embedding
    1⤵
      PID:2988
    • C:\Windows\system32\backgroundTaskHost.exe
      "C:\Windows\system32\backgroundTaskHost.exe" -ServerName:App.AppXmtcan0h2tfbfy7k9kn8hbxb6dmzz1zh0.mca
      1⤵
        PID:872
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
        • Modifies registry class
        PID:2776
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
          PID:3428
        • C:\Windows\System32\RuntimeBroker.exe
          C:\Windows\System32\RuntimeBroker.exe -Embedding
          1⤵
            PID:2660
          • C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe
            "C:\Windows\SystemApps\Microsoft.Windows.Search_cw5n1h2txyewy\SearchApp.exe" -ServerName:CortanaUI.AppX8z9r6jm96hw4bsbneegw0kyxx296wr9t.mca
            1⤵
              PID:3064
            • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
              "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:2924
              • C:\Windows\system32\WerFault.exe
                C:\Windows\system32\WerFault.exe -u -p 2924 -s 3296
                2⤵
                • Program crash
                • Suspicious behavior: EnumeratesProcesses
                PID:5200
            • 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 1000
                2⤵
                • Program crash
                • Suspicious behavior: EnumeratesProcesses
                PID:3712
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k ClipboardSvcGroup -p
              1⤵
                PID:2532
              • C:\Windows\Explorer.EXE
                C:\Windows\Explorer.EXE
                1⤵
                • Suspicious behavior: GetForegroundWindowSpam
                • Suspicious use of AdjustPrivilegeToken
                PID:2440
                • C:\Users\Admin\AppData\Local\Temp\d439abbc0c204aa869991837e62e7a5ebf30f5214e6f648c78dc812d4ffd62dd.exe
                  "C:\Users\Admin\AppData\Local\Temp\d439abbc0c204aa869991837e62e7a5ebf30f5214e6f648c78dc812d4ffd62dd.exe"
                  2⤵
                  • Drops desktop.ini file(s)
                  • Suspicious behavior: EnumeratesProcesses
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of WriteProcessMemory
                  PID:652
              • C:\Windows\system32\taskhostw.exe
                taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                1⤵
                  PID:2288
                • C:\Windows\system32\svchost.exe
                  C:\Windows\system32\svchost.exe -k UnistackSvcGroup
                  1⤵
                    PID:2244
                  • C:\Windows\system32\sihost.exe
                    sihost.exe
                    1⤵
                    • Drops desktop.ini file(s)
                    • Suspicious use of AdjustPrivilegeToken
                    PID:2228
                  • C:\Windows\system32\WerFault.exe
                    C:\Windows\system32\WerFault.exe -pss -s 428 -p 2924 -ip 2924
                    1⤵
                    • Suspicious use of NtCreateProcessExOtherParentProcess
                    • Suspicious use of WriteProcessMemory
                    PID:5036
                  • C:\Windows\System32\svchost.exe
                    C:\Windows\System32\svchost.exe -k NetworkService -p
                    1⤵
                    • Modifies data under HKEY_USERS
                    PID:496

                  Network

                  MITRE ATT&CK Matrix

                  Replay Monitor

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                  Downloads

                  • memory/872-132-0x00007FF686140000-0x00007FF6864C1000-memory.dmp

                    Filesize

                    3.5MB

                    Download

                  • memory/2228-130-0x00007FF686140000-0x00007FF6864C1000-memory.dmp

                    Filesize

                    3.5MB

                    Download

                  • memory/2660-131-0x00007FF686140000-0x00007FF6864C1000-memory.dmp

                    Filesize

                    3.5MB

                    Download

                  • memory/2744-134-0x000001D9915C0000-0x000001D9915C1000-memory.dmp

                    Filesize

                    4KB

                    Download

                  • memory/2744-133-0x000001D9915F0000-0x000001D9915F8000-memory.dmp

                    Filesize

                    32KB

                    Download

                  • memory/2744-160-0x000001D991430000-0x000001D991438000-memory.dmp

                    Filesize

                    32KB

                    Download

                  • memory/2744-161-0x000001D9913C0000-0x000001D9913C1000-memory.dmp

                    Filesize

                    4KB

                    Download

                  • memory/2744-201-0x000001D991430000-0x000001D991438000-memory.dmp

                    Filesize

                    32KB

                    Download

                  • memory/2744-202-0x000001D9913C0000-0x000001D9913C1000-memory.dmp

                    Filesize

                    4KB

                    Download