Overview

overview

10

Static

static

f130530949...le.exe

windows10_x64

10

Resubmissions

20-10-2021 08:57

211020-kwsc4aggf9 10

20-10-2021 08:46

211020-kpcdashgcj 10

Analysis

  • max time kernel
    552s
  • max time network
    360s
  • platform
    windows10_x64
  • resource
    win10-en-20211014
  • submitted
    20-10-2021 08:46

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General

  • Target

    f130530949c0e3adca48ba558980b634c0a78c8faa5572718b665cc7abfd7703.bin.sample.exe

  • Size

    170KB

  • MD5

    1bd7d1b87c5091a9653fe8005892b784

  • SHA1

    3dcf19b833266a3591fd97c93e5b9bca4ac2c21c

  • SHA256

    f130530949c0e3adca48ba558980b634c0a78c8faa5572718b665cc7abfd7703

  • SHA512

    4c13373a150b1e3bd12fdd9ad5c379a43e41c59ba5b6dd6982c79599839128bcbde30d7083a810d66604382f4d5aff24c22b504fdaab03f6743a7dc263d85651

Score
10/10
ryukpersistenceransomwarespywarestealer

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
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies Installed Components in the registry 2 TTPs
    persistence
  • Modifies extensions of user files 12 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Drops startup file 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 15 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Interacts with shadow copies 2 TTPs 54 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Modifies Internet Explorer settings 1 TTPs 2 IoCs
    adwarespyware
  • Modifies registry class 35 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of UnmapMainImage 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • c:\windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Modifies extensions of user files
    • Drops startup file
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:2308
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C "C:\users\Public\window.bat"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:78760
      • C:\Windows\system32\vssadmin.exe
        vssadmin Delete Shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:78816
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=c: /on=c: /maxsize=401MB
        3⤵
        • Interacts with shadow copies
        PID:3572
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=c: /on=c: /maxsize=unbounded
        3⤵
        • Interacts with shadow copies
        PID:78548
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=d: /on=d: /maxsize=401MB
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:78540
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=d: /on=d: /maxsize=unbounded
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:5096
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=e: /on=e: /maxsize=401MB
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:4704
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=e: /on=e: /maxsize=unbounded
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:78768
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=f: /on=f: /maxsize=401MB
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:3284
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=f: /on=f: /maxsize=unbounded
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:2404
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=g: /on=g: /maxsize=401MB
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:34744
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=g: /on=g: /maxsize=unbounded
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:3592
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=h: /on=h: /maxsize=401MB
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:4580
      • C:\Windows\system32\vssadmin.exe
        vssadmin resize shadowstorage /for=h: /on=h: /maxsize=unbounded
        3⤵
        • Enumerates connected drives
        • Interacts with shadow copies
        PID:1020
      • C:\Windows\system32\vssadmin.exe
        vssadmin Delete Shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2392
  • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
    "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
    1⤵
      PID:3224
    • C:\Windows\system32\DllHost.exe
      C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
      1⤵
        PID:3752
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 3752 -s 812
          2⤵
          • Program crash
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:4536
      • C:\Windows\System32\RuntimeBroker.exe
        C:\Windows\System32\RuntimeBroker.exe -Embedding
        1⤵
        • Modifies extensions of user files
        • Drops startup file
        • Drops file in Program Files directory
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of UnmapMainImage
        PID:3488
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /C "C:\users\Public\window.bat"
          2⤵
            PID:2164
            • C:\Windows\system32\vssadmin.exe
              vssadmin Delete Shadows /all /quiet
              3⤵
              • Interacts with shadow copies
              PID:1980
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=c: /on=c: /maxsize=401MB
              3⤵
              • Interacts with shadow copies
              PID:1860
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=c: /on=c: /maxsize=unbounded
              3⤵
              • Interacts with shadow copies
              PID:78532
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=d: /on=d: /maxsize=401MB
              3⤵
              • Enumerates connected drives
              • Interacts with shadow copies
              PID:3800
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=d: /on=d: /maxsize=unbounded
              3⤵
              • Enumerates connected drives
              • Interacts with shadow copies
              PID:78824
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=e: /on=e: /maxsize=401MB
              3⤵
              • Enumerates connected drives
              • Interacts with shadow copies
              PID:3184
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=e: /on=e: /maxsize=unbounded
              3⤵
              • Enumerates connected drives
              • Interacts with shadow copies
              PID:4788
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=f: /on=f: /maxsize=401MB
              3⤵
              • Enumerates connected drives
              • Interacts with shadow copies
              PID:3300
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=f: /on=f: /maxsize=unbounded
              3⤵
              • Enumerates connected drives
              • Interacts with shadow copies
              PID:3584
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=g: /on=g: /maxsize=401MB
              3⤵
              • Enumerates connected drives
              • Interacts with shadow copies
              PID:43140
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=g: /on=g: /maxsize=unbounded
              3⤵
              • Enumerates connected drives
              • Interacts with shadow copies
              PID:3532
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=h: /on=h: /maxsize=401MB
              3⤵
              • Enumerates connected drives
              • Interacts with shadow copies
              PID:3516
            • C:\Windows\system32\vssadmin.exe
              vssadmin resize shadowstorage /for=h: /on=h: /maxsize=unbounded
              3⤵
              • Enumerates connected drives
              • Interacts with shadow copies
              PID:3404
            • C:\Windows\system32\vssadmin.exe
              vssadmin Delete Shadows /all /quiet
              3⤵
              • Interacts with shadow copies
              PID:2156
        • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
          "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
          1⤵
            PID:3236
          • c:\windows\system32\taskhostw.exe
            taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
            1⤵
            • Modifies extensions of user files
            • Drops startup file
            • Drops file in Program Files directory
            • Modifies registry class
            • Suspicious use of UnmapMainImage
            PID:2444
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /C "C:\users\Public\window.bat"
              2⤵
                PID:42856
                • C:\Windows\system32\vssadmin.exe
                  vssadmin Delete Shadows /all /quiet
                  3⤵
                  • Interacts with shadow copies
                  PID:29460
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=c: /on=c: /maxsize=401MB
                  3⤵
                  • Interacts with shadow copies
                  PID:41560
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=c: /on=c: /maxsize=unbounded
                  3⤵
                  • Interacts with shadow copies
                  PID:47336
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=d: /on=d: /maxsize=401MB
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:67408
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=d: /on=d: /maxsize=unbounded
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:78860
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=e: /on=e: /maxsize=401MB
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:78940
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=e: /on=e: /maxsize=unbounded
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:78912
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=f: /on=f: /maxsize=401MB
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79000
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=f: /on=f: /maxsize=unbounded
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79072
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=g: /on=g: /maxsize=401MB
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79144
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=g: /on=g: /maxsize=unbounded
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79184
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=h: /on=h: /maxsize=401MB
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79220
            • c:\windows\system32\svchost.exe
              c:\windows\system32\svchost.exe -k unistacksvcgroup -s CDPUserSvc
              1⤵
              • Modifies extensions of user files
              • Drops startup file
              • Drops file in Program Files directory
              • Modifies registry class
              • Suspicious use of UnmapMainImage
              • Suspicious use of WriteProcessMemory
              PID:2316
              • C:\Windows\System32\cmd.exe
                "C:\Windows\System32\cmd.exe" /C "C:\users\Public\window.bat"
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:79076
                • C:\Windows\system32\vssadmin.exe
                  vssadmin Delete Shadows /all /quiet
                  3⤵
                  • Interacts with shadow copies
                  PID:79124
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=c: /on=c: /maxsize=401MB
                  3⤵
                  • Interacts with shadow copies
                  PID:79164
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=c: /on=c: /maxsize=unbounded
                  3⤵
                  • Interacts with shadow copies
                  PID:79200
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=d: /on=d: /maxsize=401MB
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79232
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=d: /on=d: /maxsize=unbounded
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79264
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=e: /on=e: /maxsize=401MB
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79296
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=e: /on=e: /maxsize=unbounded
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79328
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=f: /on=f: /maxsize=401MB
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79360
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=f: /on=f: /maxsize=unbounded
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79392
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=g: /on=g: /maxsize=401MB
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79424
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=g: /on=g: /maxsize=unbounded
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79456
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=h: /on=h: /maxsize=401MB
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79488
                • C:\Windows\system32\vssadmin.exe
                  vssadmin resize shadowstorage /for=h: /on=h: /maxsize=unbounded
                  3⤵
                  • Enumerates connected drives
                  • Interacts with shadow copies
                  PID:79520
                • C:\Windows\system32\vssadmin.exe
                  vssadmin Delete Shadows /all /quiet
                  3⤵
                  • Interacts with shadow copies
                  PID:79552
            • C:\Users\Admin\AppData\Local\Temp\f130530949c0e3adca48ba558980b634c0a78c8faa5572718b665cc7abfd7703.bin.sample.exe
              "C:\Users\Admin\AppData\Local\Temp\f130530949c0e3adca48ba558980b634c0a78c8faa5572718b665cc7abfd7703.bin.sample.exe"
              1⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:4024
              • 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\f130530949c0e3adca48ba558980b634c0a78c8faa5572718b665cc7abfd7703.bin.sample.exe" /f
                2⤵
                • Suspicious use of WriteProcessMemory
                PID:416
                • 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\f130530949c0e3adca48ba558980b634c0a78c8faa5572718b665cc7abfd7703.bin.sample.exe" /f
                  3⤵
                  • Adds Run key to start application
                  PID:4320
            • C:\Windows\system32\taskmgr.exe
              "C:\Windows\system32\taskmgr.exe" /4
              1⤵
              • Drops file in Windows directory
              • Checks SCSI registry key(s)
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SendNotifyMessage
              PID:4328
            • C:\Windows\system32\vssvc.exe
              C:\Windows\system32\vssvc.exe
              1⤵
              • Suspicious use of AdjustPrivilegeToken
              PID:20236
            • \??\c:\windows\system32\sihost.exe
              sihost.exe
              1⤵
              • Modifies registry class
              • Suspicious use of WriteProcessMemory
              PID:78624
              • C:\Windows\explorer.exe
                explorer.exe /LOADSAVEDWINDOWS
                2⤵
                • Enumerates connected drives
                • Drops file in Windows directory
                • Checks SCSI registry key(s)
                • Modifies Internet Explorer settings
                • Modifies registry class
                • Suspicious behavior: GetForegroundWindowSpam
                • Suspicious use of AdjustPrivilegeToken
                PID:37136
                • C:\Windows\system32\NOTEPAD.EXE
                  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Public\Desktop\RyukReadMe.txt
                  3⤵
                  • Opens file in notepad (likely ransom note)
                  PID:30724
            • C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe
              "C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca
              1⤵
              • Drops file in Windows directory
              • Suspicious use of SetWindowsHookEx
              PID:39892
            • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
              "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
              1⤵
              • Drops file in Windows directory
              • Enumerates system info in registry
              • Modifies registry class
              • Suspicious use of SetWindowsHookEx
              PID:40312
            • C:\Windows\system32\svchost.exe
              C:\Windows\system32\svchost.exe -k UnistackSvcGroup -s CDPUserSvc
              1⤵
                PID:79584
              • \??\c:\windows\system32\taskhostw.exe
                taskhostw.exe {222A245B-E637-4AE9-A93F-A59CA119A75E}
                1⤵
                  PID:42636

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                • memory/2308-117-0x00007FF6CEA60000-0x00007FF6CEDEE000-memory.dmp

                  Filesize

                  3.6MB

                  Download

                • memory/37136-198-0x0000000002B50000-0x0000000002B51000-memory.dmp

                  Filesize

                  4KB

                  Download