Analysis

  • max time kernel
    143s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/06/2024, 10:41

General

  • Target
    VirusShare_1265432c16ea20e672afecb20ddaed3d.exe
  • Size 244KB
  • Sample240610-mrkhssgf77
  • SHA256 f4568fb566f28c9205bb7feddc44e02515b8beac33de12ea8b85056ea7ea8978
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Program Files\7-Zip\Lang\restore_files_isjnf.html

Ransom Note
  • <html> <style>a { color:green; }.tb { background:white; border-style:solid; border-width:1px; padding:3px; border-color:lime; }.ttl { font-size:13px; color:880000; }</style><body style="background:#33CCFF;"> <center><div style="text-align:left; font-family:Arial; font-size:13px; line-height:20px; margin-top:10px; width:800px; background:#F4F4F4; padding:20px; border-style:solid; border-width:5px; border-color:#BABABA;"><b><font class="ttl">What happened to your files?</b></font><br> <font style="font-size:13px;">All of your files were protected by a strong encryption with RSA-2048 using CryptoWall 3.0.<br> More information about the encryption RSA-2048 can be found here: <a href="http://en.wikipedia.org/wiki/RSA_(cryptosystem)" target="_blank">http://en.wikipedia.org/wiki/RSA_(cryptosystem)</a><br></font><br><b><font class="ttl">What does this mean?</b></font><br><font style="font-size:13px;">This means that the structure and data within your files have been irrevocably changed, you will not be able to work<br> with them, read them or see them, it is the same thing as losing them forever, but with our help, you can restore them.</font><br><br><b><font class="ttl">How did this happen?</b></font> <br> <font style="font-size:13px;"> Especially for you, on our server was generated the secret key pair RSA-2048 - public and private.<br>All your files were encrypted with the public key, which has been transferred to your computer via the Internet.<br> Decrypting of YOUR FILES is only possible with the help of the private key and decrypt program, which is on our SECRET SERVER!!!.</font><br><br><b><font class="ttl">What do I do?</b></font> <br><font style="font-size:13px;">Alas, if you do not take the necessary measures for the specified time then the conditions for obtaining the private key will be changed.<br> If you really need your data, then we suggest you do not waste valuable time searching for other solutions because they do not exist.</font><br><br><div class="tb" style="color:#880000; font-size:13px; border-width:3px;">For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: <hr><b>1.<a href="http://aep554w4fm8j.fflroe598qu.com/D1C39BB367F8E585" target="_blank">http://aep554w4fm8j.fflroe598qu.com/D1C39BB367F8E585</a></b><br><b>2.<a href="http://aoei243548ld.keedo93i1lo.com/D1C39BB367F8E585" target="_blank">http://aoei243548ld.keedo93i1lo.com/D1C39BB367F8E585</a></b><br><b>3.<a href="https://zpr5huq4bgmutfnf.onion.to/D1C39BB367F8E585" target="_blank">https://zpr5huq4bgmutfnf.onion.to/D1C39BB367F8E585</a></b><br></div><br><div class="tb" style="font-size:13px; border-color:#880000;">If for some reasons the addresses are not available, follow these steps: <hr>1. Download and install tor-browser: <a href="http://www.torproject.org/projects/torbrowser.html.en" target="_blank">http://www.torproject.org/projects/torbrowser.html.en</a><br>2. After a successful installation, run the browser and wait for initialization.<br>3. Type in the address bar: <font style="font-weight:bold; color:#009977;">zpr5huq4bgmutfnf.onion/D1C39BB367F8E585</font><br>4. Follow the instructions on the site.</div><br><br><b>IMPORTANT INFORMATION:</b><br><div class="tb" style="width:790px;">Your Personal PAGE: <b><a href="http://aep554w4fm8j.fflroe598qu.com/D1C39BB367F8E585" target="_blank">http://aep554w4fm8j.fflroe598qu.com/D1C39BB367F8E585</a></b><br><!------sadfsafasdfasdfsadf -->Your Personal PAGE (using TOR): <font style="font-weight:bold; color:#009977;">zpr5huq4bgmutfnf.onion/D1C39BB367F8E585</font><br>Your personal code (if you open the site (or TOR 's) directly): <font style="font-weight:bold; color:#770000;">D1C39BB367F8E585</font><br></div></div></center></body></html>

Extracted

Path
  • C:\Program Files\7-Zip\Lang\restore_files_isjnf.txt

Ransom Note
  • ______!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!______________ What happened to your files ? All of your files were protected by a strong encryption with RSA-2048 using CryptoWall 3.0. More information about the encryption keys using RSA-2048 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) What does this mean ? This means that the structure and data within your files have been irrevocably changed, you will not be able to work with them, read them or see them, it is the same thing as losing them forever, but with our help, you can restore them. How did this happen ? Especially for you, on our server was generated the secret key pair RSA-2048 - public and private. All your files were encrypted with the public key, which has been transferred to your computer via the Internet. Decrypting of your files is only possible with the help of the private key and decrypt program, which is on our secret server. What do I do ? Alas, if you do not take the necessary measures for the specified time then the conditions for obtaining the private key will be changed. If you really value your data, then we suggest you do not waste valuable time searching for other solutions because they do not exist. For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: 1.http://aep554w4fm8j.fflroe598qu.com/D1C39BB367F8E585 2.http://aoei243548ld.keedo93i1lo.com/D1C39BB367F8E585 3. https://zpr5huq4bgmutfnf.onion.to/D1C39BB367F8E585 If for some reasons the addresses are not available, follow these steps: 1. Download and install tor-browser: http://www.torproject.org/projects/torbrowser.html.en 2. After a successful installation, run the browser and wait for initialization. 3. Type in the address bar: zpr5huq4bgmutfnf.onion/D1C39BB367F8E585 4. Follow the instructions on the site. IMPORTANT INFORMATION: Your personal page: http://aep554w4fm8j.fflroe598qu.com/D1C39BB367F8E585 Your personal page (using TOR): zpr5huq4bgmutfnf.onion/D1C39BB367F8E585 Your personal identification number (if you open the site (or TOR 's) directly): D1C39BB367F8E585
URLs
  • https://zpr5huq4bgmutfnf.onion.to/D1C39BB367F8E585

  • http://zpr5huq4bgmutfnf.onion/D1C39BB367F8E585

  • http://aep554w4fm8j.fflroe598qu.com/D1C39BB367F8E585

Signatures

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (898) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Checks computer location settings 2 TTPs 2 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Drops startup file 4 IoCs
  • Executes dropped EXE 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

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

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Interacts with shadow copies 2 TTPs 2 IoCs

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

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 25 IoCs
  • Suspicious use of SendNotifyMessage 24 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • System policy modification 1 TTPs 2 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Users\Admin\AppData\Local\Temp\VirusShare_1265432c16ea20e672afecb20ddaed3d.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_1265432c16ea20e672afecb20ddaed3d.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1528
    • C:\Users\Admin\AppData\Roaming\svckoi.exe
      C:\Users\Admin\AppData\Roaming\svckoi.exe
      2⤵
      • Checks computer location settings
      • Drops startup file
      • Executes dropped EXE
      • Adds Run key to start application
      • Drops file in Program Files directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:4796
      • C:\Windows\System32\vssadmin.exe
        "C:\Windows\System32\vssadmin.exe" delete shadows /all /Quiet
        3⤵
        • Interacts with shadow copies
        PID:4592
      • C:\Windows\SysWOW64\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\RESTORE_FILES.TXT
        3⤵
        • Opens file in notepad (likely ransom note)
        PID:3260
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument C:\Users\Admin\Desktop\RESTORE_FILES.HTML
        3⤵
        • Enumerates system info in registry
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:2468
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xfc,0x100,0x104,0xd8,0x108,0x7ffe808046f8,0x7ffe80804708,0x7ffe80804718
          4⤵
            PID:952
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2176,7615697806758058399,7916434162044934433,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2184 /prefetch:2
            4⤵
              PID:4816
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2176,7615697806758058399,7916434162044934433,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2240 /prefetch:3
              4⤵
                PID:4504
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2176,7615697806758058399,7916434162044934433,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1928 /prefetch:8
                4⤵
                  PID:4764
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2176,7615697806758058399,7916434162044934433,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3232 /prefetch:1
                  4⤵
                    PID:800
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2176,7615697806758058399,7916434162044934433,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3240 /prefetch:1
                    4⤵
                      PID:2908
                    • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2176,7615697806758058399,7916434162044934433,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5112 /prefetch:8
                      4⤵
                        PID:2060
                      • C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\92.0.902.67\identity_helper.exe" --type=utility --utility-sub-type=winrt_app_id.mojom.WinrtAppIdService --field-trial-handle=2176,7615697806758058399,7916434162044934433,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5112 /prefetch:8
                        4⤵
                          PID:4580
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2176,7615697806758058399,7916434162044934433,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5200 /prefetch:1
                          4⤵
                            PID:3744
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2176,7615697806758058399,7916434162044934433,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5216 /prefetch:1
                            4⤵
                              PID:1924
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2176,7615697806758058399,7916434162044934433,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=10 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5668 /prefetch:1
                              4⤵
                                PID:3236
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2176,7615697806758058399,7916434162044934433,131072 --lang=en-US --disable-client-side-phishing-detection --instant-process --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=11 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5596 /prefetch:1
                                4⤵
                                  PID:4180
                              • C:\Windows\System32\vssadmin.exe
                                "C:\Windows\System32\vssadmin.exe" delete shadows /all /Quiet
                                3⤵
                                • Interacts with shadow copies
                                PID:1188
                              • C:\Windows\SysWOW64\cmd.exe
                                "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Roaming\svckoi.exe >> NUL
                                3⤵
                                  PID:2256
                              • C:\Windows\SysWOW64\cmd.exe
                                "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\VIRUSS~1.EXE >> NUL
                                2⤵
                                  PID:224
                              • C:\Windows\system32\vssvc.exe
                                C:\Windows\system32\vssvc.exe
                                1⤵
                                • Suspicious use of AdjustPrivilegeToken
                                PID:2624
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:2164
                                • C:\Windows\System32\CompPkgSrv.exe
                                  C:\Windows\System32\CompPkgSrv.exe -Embedding
                                  1⤵
                                    PID:736

                                  Network

                                        MITRE ATT&CK Enterprise v15

                                        Replay Monitor

                                        Loading Replay Monitor...

                                        Downloads

                                        restore_files_isjnf.html

                                        • Path C:\Program Files\7-Zip\Lang\restore_files_isjnf.html
                                        • Size 3KB
                                        • SHA256 f344e6fc6689f9e0801bf935c2eef3f3ce614667546560c144320d4d69c8b117
                                        • MD5 SHA1 SHA512

                                        restore_files_isjnf.txt

                                        • Path C:\Program Files\7-Zip\Lang\restore_files_isjnf.txt
                                        • Size 2KB
                                        • SHA256 7a4f9daca70f9e99c57d7ce799c6e0da553e0f99466bc765bfa5c06b26011375
                                        • MD5 SHA1 SHA512

                                        settings.dat

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                        • Size 152B
                                        • SHA256 354de4b033ba6e4d85f94d91230cb8501f62e0a4e302cd4076c7e0ad73bedbd1
                                        • MD5 SHA1 SHA512

                                        settings.dat

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                        • Size 152B
                                        • SHA256 bce2dfaa91f0d44e977e0f79c60e64954a7b9dc828b0e30fbaa67dbe82f750aa
                                        • MD5 SHA1 SHA512

                                        Preferences

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                        • Size 5KB
                                        • SHA256 b5030156846af158d8db8c74dcce08f5e16445e3ec9e52dc420b594b49c7b316
                                        • MD5 SHA1 SHA512 SSDEEP

                                        Preferences

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                        • Size 6KB
                                        • SHA256 7d32ca022238e40b74f15eae880d3ed87f5a2010d27931f8a1929d674699139c
                                        • MD5 SHA1 SHA512 SSDEEP

                                        CURRENT

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\data_reduction_proxy_leveldb\CURRENT
                                        • Size 16B
                                        • SHA256 0861415cada612ea5834d56e2cf1055d3e63979b69eb71d32ae9ae394d8306cd
                                        • MD5 SHA1 SHA512

                                        Local State

                                        • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Local State
                                        • Size 10KB
                                        • SHA256 72eca244e803df093c10b1dc453561e1bdc4e7fa957e5ade213e1509df1e1918
                                        • MD5 SHA1 SHA512 SSDEEP

                                        svckoi.exe

                                        • Path C:\Users\Admin\AppData\Roaming\svckoi.exe
                                        • Size 244KB
                                        • SHA256 f4568fb566f28c9205bb7feddc44e02515b8beac33de12ea8b85056ea7ea8978
                                        • MD5 SHA1 SHA512 SSDEEP

                                        memory/1528-10-0x0000000000400000-0x0000000000521000-memory.dmp

                                        memory/1528-0-0x00000000005C0000-0x00000000005C3000-memory.dmp

                                        memory/1528-11-0x0000000074CD0000-0x0000000074D09000-memory.dmp

                                        memory/1528-5-0x0000000074CD0000-0x0000000074D09000-memory.dmp

                                        memory/1528-1-0x0000000000400000-0x0000000000521000-memory.dmp

                                        memory/4796-8177-0x0000000000400000-0x0000000000521000-memory.dmp

                                        memory/4796-8208-0x0000000000400000-0x0000000000521000-memory.dmp

                                        memory/4796-3913-0x0000000000400000-0x0000000000521000-memory.dmp

                                        memory/4796-16-0x0000000074CD0000-0x0000000074D09000-memory.dmp

                                        memory/4796-8256-0x0000000000400000-0x0000000000521000-memory.dmp

                                        memory/4796-8291-0x0000000000400000-0x0000000000521000-memory.dmp

                                        memory/4796-8292-0x0000000074CD0000-0x0000000074D09000-memory.dmp