Analysis

  • max time kernel
    131s
  • max time network
    152s
  • 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, 11:37

General

  • Target
    VirusShare_5885d072fb73bdd355e85b67bcde3bfd.exe
  • Size 368KB
  • Sample240610-nrj3pshd2v
  • SHA256 d3f5990770291c25a4ff14e8a6fe033f7ad1689c6206ed41eb7ed253a1c2c348
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Program Files\7-Zip\Lang\Recovery+mmplo.txt

Ransom Note
  • __!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#!__!@#!@#! NOT YOUR LANGUAGE? USE https://translate.google.com What happened to your files ? All of your files were protected by a strong encryption with RSA-4096. More information about the encryption keys using RSA-4096 can be found here: http://en.wikipedia.org/wiki/RSA_(cryptosystem) How did this happen ? !!! Specially for your PC was generated personal RSA-4096 KEY, both 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 ? So, there are two ways you can choose: wait for a miracle and get your price doubled, or start obtaining BITCOIN NOW! , and restore your data easy way. If You have really valuable data, you better not waste your time, because there is no other way to get your files, except make a payment. For more specific instructions, please visit your personal home page, there are a few different addresses pointing to your page below: 1. http://prest54538hnksjn4kjfwdbhwere.hotchunman.com/C7FAFF798E63542 2. http://b4youfred5485jgsa3453f.italazudda.com/C7FAFF798E63542 3. http://5rport45vcdef345adfkksawe.bematvocal.at/C7FAFF798E63542 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: fwgrhsao3aoml7ej.onion/C7FAFF798E63542 4. Follow the instructions on the site. ---------------- IMPORTANT INFORMATION------------------------ *-*-* Your personal pages: http://prest54538hnksjn4kjfwdbhwere.hotchunman.com/C7FAFF798E63542 http://b4youfred5485jgsa3453f.italazudda.com/C7FAFF798E63542 http://5rport45vcdef345adfkksawe.bematvocal.at/C7FAFF798E63542 *-*-* Your personal page Tor-Browser: fwgrhsao3aoml7ej.ONION/C7FAFF798E63542 *-*-* Your personal identification ID: C7FAFF798E63542
URLs
  • http://prest54538hnksjn4kjfwdbhwere.hotchunman.com/C7FAFF798E63542

  • http://b4youfred5485jgsa3453f.italazudda.com/C7FAFF798E63542

  • http://5rport45vcdef345adfkksawe.bematvocal.at/C7FAFF798E63542

  • http://fwgrhsao3aoml7ej.onion/C7FAFF798E63542

  • http://fwgrhsao3aoml7ej.ONION/C7FAFF798E63542

Signatures

  • Deletes shadow copies 3 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Renames multiple (886) 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 6 IoCs
  • Executes dropped EXE 2 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 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 1 IoCs
  • Opens file in notepad (likely ransom note) 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 47 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 36 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_5885d072fb73bdd355e85b67bcde3bfd.exe
    "C:\Users\Admin\AppData\Local\Temp\VirusShare_5885d072fb73bdd355e85b67bcde3bfd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1300
    • C:\Users\Admin\AppData\Local\Temp\VirusShare_5885d072fb73bdd355e85b67bcde3bfd.exe
      "C:\Users\Admin\AppData\Local\Temp\VirusShare_5885d072fb73bdd355e85b67bcde3bfd.exe"
      2⤵
      • Checks computer location settings
      • Drops file in Windows directory
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3412
      • C:\Windows\rdhxrehcgmur.exe
        C:\Windows\rdhxrehcgmur.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1608
        • C:\Windows\rdhxrehcgmur.exe
          C:\Windows\rdhxrehcgmur.exe
          4⤵
          • 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:3104
          • C:\Windows\System32\wbem\WMIC.exe
            "C:\Windows\System32\wbem\WMIC.exe" shadowcopy delete /nointeractive
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:932
          • C:\Windows\SysWOW64\NOTEPAD.EXE
            "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\RECOVERY.TXT
            5⤵
            • Opens file in notepad (likely ransom note)
            PID:3552
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument C:\Users\Admin\Desktop\RECOVERY.HTM
            5⤵
              PID:4664
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\system32\cmd.exe" /c DEL C:\Windows\RDHXRE~1.EXE
              5⤵
                PID:4812
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c DEL C:\Users\Admin\AppData\Local\Temp\VIRUSS~1.EXE
            3⤵
              PID:4316
        • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
          "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=4172,i,5047420736443372512,9747851268033796534,262144 --variations-seed-version --mojo-platform-channel-handle=4420 /prefetch:8
          1⤵
            PID:2168
          • C:\Windows\system32\vssvc.exe
            C:\Windows\system32\vssvc.exe
            1⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:2080
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=12 --field-trial-handle=4352,i,5047420736443372512,9747851268033796534,262144 --variations-seed-version --mojo-platform-channel-handle=1304 /prefetch:1
            1⤵
              PID:4328
            • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
              "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=11 --field-trial-handle=4232,i,5047420736443372512,9747851268033796534,262144 --variations-seed-version --mojo-platform-channel-handle=5028 /prefetch:1
              1⤵
                PID:400
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --no-appcompat-clear --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=13 --field-trial-handle=5148,i,5047420736443372512,9747851268033796534,262144 --variations-seed-version --mojo-platform-channel-handle=5284 /prefetch:1
                1⤵
                  PID:3840
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=5292,i,5047420736443372512,9747851268033796534,262144 --variations-seed-version --mojo-platform-channel-handle=5420 /prefetch:8
                  1⤵
                    PID:4676
                  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=entity_extraction_service.mojom.Extractor --lang=en-US --service-sandbox-type=entity_extraction --onnx-enabled-for-ee --no-appcompat-clear --field-trial-handle=5428,i,5047420736443372512,9747851268033796534,262144 --variations-seed-version --mojo-platform-channel-handle=5472 /prefetch:8
                    1⤵
                      PID:1580
                    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --no-appcompat-clear --disable-gpu-compositing --lang=en-US --js-flags=--ms-user-locale= --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=16 --field-trial-handle=5440,i,5047420736443372512,9747851268033796534,262144 --variations-seed-version --mojo-platform-channel-handle=5652 /prefetch:1
                      1⤵
                        PID:4508

                      Network

                            MITRE ATT&CK Enterprise v15

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            Recovery+mmplo.html

                            • Path C:\Program Files\7-Zip\Lang\Recovery+mmplo.html
                            • Size 8KB
                            • SHA256 c2b446795448a82f0e046411668369658b29ea68444bd99cb62b20dd3cd07078
                            • MD5 SHA1 SHA512 SSDEEP

                            Recovery+mmplo.png

                            • Path C:\Program Files\7-Zip\Lang\Recovery+mmplo.png
                            • Size 69KB
                            • SHA256 020d1c0bc64cb011ffa6b1c93ecf5826ab2b26a9034ce7ab2e20b12d253ef424
                            • MD5 SHA1 SHA512 SSDEEP

                            Recovery+mmplo.txt

                            • Path C:\Program Files\7-Zip\Lang\Recovery+mmplo.txt
                            • Size 2KB
                            • SHA256 72735ebb3f35602d93747f68296bc7a19c27f01431148a797a090e326ee73f17
                            • MD5 SHA1 SHA512

                            THIRDPARTYLICENSEREADME-JAVAFX.txt

                            • Path C:\Program Files\Java\jre-1.8\THIRDPARTYLICENSEREADME-JAVAFX.txt
                            • Size 560B
                            • SHA256 a4e987215eab9d8e89ef61c6b3323be06acf63f430ff4579533606f9abea787a
                            • MD5 SHA1 SHA512

                            THIRDPARTYLICENSEREADME.txt

                            • Path C:\Program Files\Java\jre-1.8\THIRDPARTYLICENSEREADME.txt
                            • Size 560B
                            • SHA256 abbdb5e9fa953cc8f812098a59aab65f7d1d6e9a4395f1e15f061f9925597fb5
                            • MD5 SHA1 SHA512

                            ClientSub2019_eula.txt

                            • Path C:\Program Files\Microsoft Office\root\Office16\1033\ClientSub2019_eula.txt
                            • Size 416B
                            • SHA256 e1f15a04a0e835f299f41467a7e753f09fc9fe0aa4dce3b576a1f4688a4dd849
                            • MD5 SHA1 SHA512

                            AppCache133596449549740872.txt

                            • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.Search_cw5n1h2txyewy\LocalState\DeviceSearchCache\AppCache133596449549740872.txt
                            • Size 75KB
                            • SHA256 963e81c1c6c586058acec11e3d4c7c69014983681a88792c54720b1d50fb5040
                            • MD5 SHA1 SHA512 SSDEEP

                            rdhxrehcgmur.exe

                            • Path C:\Windows\rdhxrehcgmur.exe
                            • Size 368KB
                            • SHA256 d3f5990770291c25a4ff14e8a6fe033f7ad1689c6206ed41eb7ed253a1c2c348
                            • MD5 SHA1 SHA512 SSDEEP

                            memory/1300-4-0x0000000000AB0000-0x0000000000AB3000-memory.dmp

                            memory/1300-0-0x0000000000AB0000-0x0000000000AB3000-memory.dmp

                            memory/1300-1-0x0000000000AB0000-0x0000000000AB3000-memory.dmp

                            memory/1608-12-0x0000000000400000-0x00000000005AF000-memory.dmp

                            memory/1608-20-0x0000000000400000-0x00000000005AF000-memory.dmp

                            memory/3104-26-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-6007-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-24-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-17-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-53-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-18-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-19-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-10903-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-10897-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-10890-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-10888-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-1722-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-3834-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-21-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3104-8667-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3412-2-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3412-3-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3412-5-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3412-6-0x0000000000400000-0x0000000000485000-memory.dmp

                            memory/3412-13-0x0000000000400000-0x0000000000485000-memory.dmp