Analysis

  • max time kernel
    150s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/06/2024, 18:19

General

  • Target
    VirusShare_b62587dc8304bbc9ce68d0e8098dcabb.exe
  • Size 260KB
  • Sample240607-wyds9sch28
  • SHA256 03fa142c0153a5651371ebefc567bf9988338050f9c185e3b0dafdc0f5092744
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

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

Ransom Note
  • !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! What happened to your files ? All of your files were protected by a strong encryption with RSA-2048. 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/5DEBF539C17C9C9A 2. http://aoei243548ld.keedo93i1lo.com/5DEBF539C17C9C9A 3. https://zpr5huq4bgmutfnf.onion.to/5DEBF539C17C9C9A 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/5DEBF539C17C9C9A 4. Follow the instructions on the site. IMPORTANT INFORMATION: Your personal page: http://aep554w4fm8j.fflroe598qu.com/5DEBF539C17C9C9A Your personal page (using TOR): zpr5huq4bgmutfnf.onion/5DEBF539C17C9C9A Your personal identification number (if you open the site (or TOR 's) directly): 5DEBF539C17C9C9A
URLs
  • http://aep554w4fm8j.fflroe598qu.com/5DEBF539C17C9C9A

  • http://aoei243548ld.keedo93i1lo.com/5DEBF539C17C9C9A

  • https://zpr5huq4bgmutfnf.onion.to/5DEBF539C17C9C9A

  • http://zpr5huq4bgmutfnf.onion/5DEBF539C17C9C9A

Extracted

Path
  • C:\Program Files\7-Zip\Lang\restore_files_olbdb.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 <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 <!------sdkfghdfskjghfdg --> files were encrypted with the public key, <!------sdkfghdfskjghfdg --> which has been <!------sdkfghdfskjghfdg --> transferred to <!------sdkfghdfskjghfdg -->your computer via <!------sdkfghdfskjghfdg -->the Internet.<br> <!------sdkfghdfskjghfdg --> Decrypting of <!------sdkfghdfskjghfdg -->YOUR FILES is <!------sdkfghdfskjghfdg -->only possible <!------sdkfghdfskjghfdg -->with the help of the <!------sdkfghdfskjghfdg -->private key and <!------sdkfghdfskjghfdg -->decrypt program, <!------sdkfghdfskjghfdg -->which is on our <!------sdkfghdfskjghfdg -->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 for some reasons the addresses are not available, follow these steps: <hr> <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> <!------dfgdfsg --><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> <!------sadfsafasdfasdfsadf --><b>1.<a href="http://aep554w4fm8j.fflroe598qu.com/5DEBF539C17C9C9A" target="_blank">http://aep554w4fm8j.fflroe598qu.com/5DEBF539C17C9C9A</a></b><br> <!------dsfgwert --><b>2.<a href="http://aoei243548ld.keedo93i1lo.com/5DEBF539C17C9C9A" target="_blank">http://aoei243548ld.keedo93i1lo.com/5DEBF539C17C9C9A</a></b><br> <!------werterwtewrt --><b>3.<a href="https://zpr5huq4bgmutfnf.onion.to/5DEBF539C17C9C9A" target="_blank">https://zpr5huq4bgmutfnf.onion.to/5DEBF539C17C9C9A</a></b><br> <!------sfg23345 --></div><br><div class="tb" style="font-size:13px; border-color:#88000 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/5DEBF539C17C9C9A</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/5DEBF539C17C9C9A" target="_blank">http://aep554w4fm8j.fflroe598qu.com/5DEBF539C17C9C9A</a></b><br> Your Personal PAGE (using TOR): <font style="font-weight:bold; color:#009977;">zpr5huq4bgmutfnf.onion/5DEBF539C17C9C9A</font><br> Your personal code (if you open the site (or TOR 's) directly): <font style="font-weight:bold; color:#770000;">5DEBF539C17C9C9A</font><br> </div></div></center></body></html>

Signatures

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (871) 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_b62587dc8304bbc9ce68d0e8098dcabb.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_b62587dc8304bbc9ce68d0e8098dcabb.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1488
    • C:\Users\Admin\AppData\Roaming\vcwlly.exe
      C:\Users\Admin\AppData\Roaming\vcwlly.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:1732
      • C:\Windows\System32\vssadmin.exe
        "C:\Windows\System32\vssadmin.exe" delete shadows /all /Quiet
        3⤵
        • Interacts with shadow copies
        PID:916
      • 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:4860
      • 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:3444
        • 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,0x100,0x104,0xd8,0x108,0x7ffd60d846f8,0x7ffd60d84708,0x7ffd60d84718
          4⤵
            PID:2200
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2092,17353227248291533475,13499144124244309050,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2156 /prefetch:2
            4⤵
              PID:1580
            • 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=2092,17353227248291533475,13499144124244309050,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2208 /prefetch:3
              4⤵
                PID:1264
              • 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=2092,17353227248291533475,13499144124244309050,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2760 /prefetch:8
                4⤵
                  PID:4680
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,17353227248291533475,13499144124244309050,131072 --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=3212 /prefetch:1
                  4⤵
                    PID:452
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,17353227248291533475,13499144124244309050,131072 --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=3220 /prefetch:1
                    4⤵
                      PID:1416
                    • 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=2092,17353227248291533475,13499144124244309050,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5116 /prefetch:8
                      4⤵
                        PID:1852
                      • 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=2092,17353227248291533475,13499144124244309050,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=5116 /prefetch:8
                        4⤵
                          PID:1432
                        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,17353227248291533475,13499144124244309050,131072 --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=5208 /prefetch:1
                          4⤵
                            PID:624
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,17353227248291533475,13499144124244309050,131072 --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=5224 /prefetch:1
                            4⤵
                              PID:3292
                            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,17353227248291533475,13499144124244309050,131072 --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=3392 /prefetch:1
                              4⤵
                                PID:740
                              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2092,17353227248291533475,13499144124244309050,131072 --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=3452 /prefetch:1
                                4⤵
                                  PID:4400
                              • C:\Windows\System32\vssadmin.exe
                                "C:\Windows\System32\vssadmin.exe" delete shadows /all /Quiet
                                3⤵
                                • Interacts with shadow copies
                                PID:3140
                            • C:\Windows\SysWOW64\cmd.exe
                              "C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\VIRUSS~1.EXE >> NUL
                              2⤵
                                PID:3512
                            • C:\Windows\system32\vssvc.exe
                              C:\Windows\system32\vssvc.exe
                              1⤵
                              • Suspicious use of AdjustPrivilegeToken
                              PID:3944
                            • C:\Windows\System32\CompPkgSrv.exe
                              C:\Windows\System32\CompPkgSrv.exe -Embedding
                              1⤵
                                PID:1688
                              • C:\Windows\System32\CompPkgSrv.exe
                                C:\Windows\System32\CompPkgSrv.exe -Embedding
                                1⤵
                                  PID:3740

                                Network

                                      MITRE ATT&CK Enterprise v15

                                      Replay Monitor

                                      Loading Replay Monitor...

                                      Downloads

                                      restore_files_olbdb.html

                                      • Path C:\Program Files\7-Zip\Lang\restore_files_olbdb.html
                                      • Size 4KB
                                      • SHA256 4e78ec68ea305ab5cabfa8d62960e5b0ac19b932b5a85aaf37e3483933c86c49
                                      • MD5 SHA1 SHA512 SSDEEP

                                      restore_files_olbdb.txt

                                      • Path C:\Program Files\7-Zip\Lang\restore_files_olbdb.txt
                                      • Size 2KB
                                      • SHA256 a96e22606d29131836f88843b27643ff7e63a85cce7567ecfcc98d19b5f69446
                                      • MD5 SHA1 SHA512

                                      settings.dat

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                      • Size 152B
                                      • SHA256 9d8e24c91cff338e56b518a533cb2e49a2803356bbf6e04892fb168a7ce2844a
                                      • MD5 SHA1 SHA512

                                      settings.dat

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad\settings.dat
                                      • Size 152B
                                      • SHA256 02d4984e590e947265474d592e64edde840fdca7eb881eebde3e220a1d883455
                                      • MD5 SHA1 SHA512

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                      • Size 5KB
                                      • SHA256 515b835adbfb66ac88a5de30c9fa483782992ae8f9e6ef7dbd2752c1a9c50f2f
                                      • MD5 SHA1 SHA512 SSDEEP

                                      Preferences

                                      • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Preferences
                                      • Size 6KB
                                      • SHA256 2992b44c3c8482d095a14cc4e632db49fdc7937748ceda1c83f035c278d2cbfa
                                      • 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 11KB
                                      • SHA256 a94ed0309e5eff528f88d08151e864af0cfb877f01b0c5a845fadecac0a5cbef
                                      • MD5 SHA1 SHA512 SSDEEP

                                      vcwlly.exe

                                      • Path C:\Users\Admin\AppData\Roaming\vcwlly.exe
                                      • Size 260KB
                                      • SHA256 03fa142c0153a5651371ebefc567bf9988338050f9c185e3b0dafdc0f5092744
                                      • MD5 SHA1 SHA512 SSDEEP

                                      memory/1488-6-0x0000000074790000-0x00000000747C9000-memory.dmp

                                      memory/1488-16-0x0000000000400000-0x000000000059E000-memory.dmp

                                      memory/1488-0-0x0000000000400000-0x000000000059E000-memory.dmp

                                      memory/1488-5-0x0000000000720000-0x0000000000724000-memory.dmp

                                      memory/1488-17-0x0000000074790000-0x00000000747C9000-memory.dmp

                                      memory/1488-2-0x0000000000700000-0x0000000000704000-memory.dmp

                                      memory/1732-15-0x0000000000780000-0x0000000000784000-memory.dmp

                                      memory/1732-11-0x0000000000400000-0x000000000059E000-memory.dmp

                                      memory/1732-18-0x0000000074790000-0x00000000747C9000-memory.dmp

                                      memory/1732-7661-0x0000000000400000-0x000000000059E000-memory.dmp

                                      memory/1732-7598-0x0000000000400000-0x000000000059E000-memory.dmp

                                      memory/1732-3219-0x0000000000400000-0x000000000059E000-memory.dmp

                                      memory/1732-7699-0x0000000000400000-0x000000000059E000-memory.dmp