Analysis

  • max time kernel
    138s
  • max time network
    172s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    26-07-2021 12:57

General

  • Target

    392e471bab3700300378fd83bc108576acb6246f19c502972c00ddb4b9bac270.sample.exe

  • Size

    125KB

  • MD5

    c4472cd02b1396ca49935f029db6a8ec

  • SHA1

    fa4891fc8416a191d255fc186ef534d022d665e2

  • SHA256

    392e471bab3700300378fd83bc108576acb6246f19c502972c00ddb4b9bac270

  • SHA512

    4a7463bc0a6a88d6eb7b2964b6212429ae8a7cd5f02abda2ecabecb1b2b374419fc48c4124386bdf184cef6f27ede998d245c3a0dbb97050e1639c7fb1a37ce5

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-001B-0409-0000-0000000FF1CE}-C\# DECRYPT MY FILES #.txt

Family

cerber

Ransom Note
C E R B E R R A N S O M W A R E ######################################################################### Cannot you find the files you need? Is the content of the files that you looked for not readable? It is normal because the files' names, as well as the data in your files have been encrypted. Great!!! You have turned to be a part of a big community #Cerber_Ransomware. ######################################################################### !!! If you are reading this message it means the software !!! "Cerber Rans0mware" has been removed from your computer. ######################################################################### What is encryption? ------------------- Encryption is a reversible modification of information for security reasons but providing full access to it for authorized users. To become an authorized user and keep the modification absolutely reversible (in other words to have a possibility to decrypt your files) you should have an individual private key. But not only it. It is required also to have the special decryption software (in your case "Cerber Decryptor" software) for safe and complete decryption of all your files and data. ######################################################################### Everything is clear for me but what should I do? ------------------------------------------------ The first step is reading these instructions to the end. Your files have been encrypted with the "Cerber Ransomware" software; the instructions ("# DECRYPT MY FILES #.html" and "# DECRYPT MY FILES #.txt") in the folders with your encrypted files are not viruses, they will help you. After reading this text the most part of people start searching in the Internet the words the "Cerber Ransomware" where they find a lot of ideas, recommendations and instructions. It is necessary to realize that we are the ones who closed the lock on your files and we are the only ones who have this secret key to open them. !!! Any attempts to get back your files with the third-party tools can !!! be fatal for your encrypted files. The most part of the third-party software change data within the encrypted file to restore it but this causes damage to the files. Finally it will be impossible to decrypt your files. When you make a puzzle but some items are lost, broken or not put in its place - the puzzle items will never match, the same way the third-party software will ruin your files completely and irreversibly. You should realize that any intervention of the third-party software to restore files encrypted with the "Cerber Ransomware" software may be fatal for your files. ######################################################################### !!! There are several plain steps to restore your files but if you do !!! not follow them we will not be able to help you, and we will not try !!! since you have read this warning already. ######################################################################### For your information the software to decrypt your files (as well as the private key provided together) are paid products. After purchase of the software package you will be able to: 1. decrypt all your files; 2. work with your documents; 3. view your photos and other media; 4. continue your usual and comfortable work at the computer. If you understand all importance of the situation then we propose to you to go directly to your personal page where you will receive the complete instructions and guarantees to restore your files. ######################################################################### There is a list of temporary addresses to go on your personal page below: _______________________________________________________________________ | | 1. http://cerberhhyed5frqa.onion.to/AA89-A485-DC83-0006-4055 | | 2. http://cerberhhyed5frqa.onion.cab/AA89-A485-DC83-0006-4055 | | 3. http://cerberhhyed5frqa.onion.nu/AA89-A485-DC83-0006-4055 | | 4. http://cerberhhyed5frqa.onion.link/AA89-A485-DC83-0006-4055 | | 5. http://cerberhhyed5frqa.tor2web.org/AA89-A485-DC83-0006-4055 |_______________________________________________________________________ ######################################################################### What should you do with these addresses? ---------------------------------------- If you read the instructions in TXT format (if you have instruction in HTML (the file with an icon of your Internet browser) then the easiest way is to run it): 1. take a look at the first address (in this case it is http://cerberhhyed5frqa.onion.to/AA89-A485-DC83-0006-4055); 2. select it with the mouse cursor holding the left mouse button and moving the cursor to the right; 3. release the left mouse button and press the right one; 4. select "Copy" in the appeared menu; 5. run your Internet browser (if you do not know what it is run the Internet Explorer); 6. move the mouse cursor to the address bar of the browser (this is the place where the site address is written); 7. click the right mouse button in the field where the site address is written; 8. select the button "Insert" in the appeared menu; 9. then you will see the address http://cerberhhyed5frqa.onion.to/AA89-A485-DC83-0006-4055 appeared there; 10. press ENTER; 11. the site should be loaded; if it is not loaded repeat the same instructions with the second address and continue until the last address if falling. If for some reason the site cannot be opened check the connection to the Internet; if the site still cannot be opened take a look at the instructions on omitting the point about working with the addresses in the HTML instructions. If you browse the instructions in HTML format: 1. click the left mouse button on the first address (in this case it is http://cerberhhyed5frqa.onion.to/AA89-A485-DC83-0006-4055); 2. in a new tab or window of your web browser the site should be loaded; if it is not loaded repeat the same instructions with the second address and continue until the last address. If for some reason the site cannot be opened check the connection to the Internet. ######################################################################### Unfortunately these sites are short-term since the antivirus companies are interested in you do not have a chance to restore your files but continue to buy their products. Unlike them we are ready to help you always. If you need our help but the temporary sites are not available: 1. run your Internet browser (if you do not know what it is run the Internet Explorer); 2. enter or copy the address https://www.torproject.org/download/download-easy.html.en into the address bar of your browser and press ENTER; 3. wait for the site loading; 4. on the site you will be offered to download Tor Browser; download and run it, follow the installation instructions, wait until the installation is completed; 5. run Tor Browser; 6. connect with the button "Connect" (if you use the English version); 7. a normal Internet browser window will be opened after the initialization; 8. type or copy the address ________________________________________________________ | | | http://cerberhhyed5frqa.onion/AA89-A485-DC83-0006-4055 | |________________________________________________________| in this browser address bar; 9. press ENTER; 10. the site should be loaded; if for some reason the site is not loading wait for a moment and try again. If you have any problems during installation or operation of Tor Browser, please, visit https://www.youtube.com/ and type request in the search bar "install tor browser windows" and you will find a lot of training videos about Tor Browser installation and operation. If TOR address is not available for a long period (2-3 days) it means you are late; usually you have about 2-3 weeks after reading the instructions to restore your files. ######################################################################### Additional information: You will find the instructions for restoring your files in those folders where you have your encrypted files only. The instructions are made in two file formats - HTML and TXT for your convenience. Unfortunately antivirus companies cannot protect or restore your files but they can make the situation worse removing the instructions how to restore your encrypted files. The instructions are not viruses; they have informative nature only, so any claims on the absence of any instruction files you can send to your antivirus company. ######################################################################### Cerber Ransomware Project is not malicious and is not intended to harm a person and his/her information data. The project is created for the sole purpose of instruction regarding information security, as well as certification of antivirus software for their suitability for data protection. Together we make the Internet a better and safer place. ######################################################################### If you look through this text in the Internet and realize that something is wrong with your files but you do not have any instructions to restore your files, please, contact your antivirus support. ######################################################################### Remember that the worst situation already happened and now it depends on your determination and speed of your actions the further life of your files.
URLs

http://cerberhhyed5frqa.onion.to/AA89-A485-DC83-0006-4055

http://cerberhhyed5frqa.onion.cab/AA89-A485-DC83-0006-4055

http://cerberhhyed5frqa.onion.nu/AA89-A485-DC83-0006-4055

http://cerberhhyed5frqa.onion.link/AA89-A485-DC83-0006-4055

http://cerberhhyed5frqa.tor2web.org/AA89-A485-DC83-0006-4055

http://cerberhhyed5frqa.onion/AA89-A485-DC83-0006-4055

Extracted

Path

C:\Users\Admin\Desktop\# DECRYPT MY FILES #.html

Ransom Note
C E R B E R R A N S O M W A R E Cannot you find the files you need? Is the content of the files that you looked for not readable? It is normal because the files' names, as well as the data in your files have been encrypted. Great!!! You have turned to be a part of a big community #Cerber_Ransomware. If you are reading this message it means the software "Cerber Rans0mware" has been removed from your computer. What is encryption? Encryption is a reversible modification of information for security reasons but providing full access to it for authorized users. To become an authorized user and keep the modification absolutely reversible (in other words to have a possibility to decrypt your files) you should have an individual private key. But not only it. It is required also to have the special decryption software (in your case "Cerber Decryptor" software) for safe and complete decryption of all your files and data. Everything is clear for me but what should I do? The first step is reading these instructions to the end. Your files have been encrypted with the "Cerber Ransomware" software; the instructions ("# DECRYPT MY FILES #.html" and "# DECRYPT MY FILES #.txt") in the folders with your encrypted files are not viruses, they will help you. After reading this text the most part of people start searching in the Internet the words the "Cerber Ransomware" where they find a lot of ideas, recommendations and instructions. It is necessary to realize that we are the ones who closed the lock on your files and we are the only ones who have this secret key to open them. Any attempts to get back your files with the third-party tools can be fatal for your encrypted files. The most part of the third-party software change data within the encrypted file to restore it but this causes damage to the files. Finally it will be impossible to decrypt your files. When you make a puzzle but some items are lost, broken or not put in its place - the puzzle items will never match, the same way the third-party software will ruin your files completely and irreversibly. You should realize that any intervention of the third-party software to restore files encrypted with the "Cerber Ransomware" software may be fatal for your files. There are several plain steps to restore your files but if you do not follow them we will not be able to help you, and we will not try since you have read this warning already. For your information the software to decrypt your files (as well as the private key provided together) are paid products. After purchase of the software package you will be able to: decrypt all your files; work with your documents; view your photos and other media; continue your usual and comfortable work at the computer. If you understand all importance of the situation then we propose to you to go directly to your personal page where you will receive the complete instructions and guarantees to restore your files. There is a list of temporary addresses to go on your personal page below: http://cerberhhyed5frqa.onion.to/AA89-A485-DC83-0006-4055 http://cerberhhyed5frqa.onion.cab/AA89-A485-DC83-0006-4055 http://cerberhhyed5frqa.onion.nu/AA89-A485-DC83-0006-4055 http://cerberhhyed5frqa.onion.link/AA89-A485-DC83-0006-4055 http://cerberhhyed5frqa.tor2web.org/AA89-A485-DC83-0006-4055 What should you do with these addresses? If you read the instructions in TXT format (if you have instruction in HTML (the file with an icon of your Internet browser) then the easiest way is to run it): take a look at the first address (in this case it is http://cerberhhyed5frqa.onion.to/AA89-A485-DC83-0006-4055); select it with the mouse cursor holding the left mouse button and moving the cursor to the right; release the left mouse button and press the right one; select "Copy" in the appeared menu; run your Internet browser (if you do not know what it is run the Internet Explorer); move the mouse cursor to the address bar of the browser (this is the place where the site address is written); click the right mouse button in the field where the site address is written; select the button "Insert" in the appeared menu; then you will see the address http://cerberhhyed5frqa.onion.to/AA89-A485-DC83-0006-4055 appeared there; press ENTER; the site should be loaded; if it is not loaded repeat the same instructions with the second address and continue until the last address if falling. If for some reason the site cannot be opened check the connection to the Internet; if the site still cannot be opened take a look at the instructions on omitting the point about working with the addresses in the HTML instructions. If you browse the instructions in HTML format: click the left mouse button on the first address (in this case it is http://cerberhhyed5frqa.onion.to/AA89-A485-DC83-0006-4055); in a new tab or window of your web browser the site should be loaded; if it is not loaded repeat the same instructions with the second address and continue until the last address. If for some reason the site cannot be opened check the connection to the Internet. Unfortunately these sites are short-term since the antivirus companies are interested in you do not have a chance to restore your files but continue to buy their products. Unlike them we are ready to help you always. If you need our help but the temporary sites are not available: run your Internet browser (if you do not know what it is run the Internet Explorer); enter or copy the address https://www.torproject.org/download/download-easy.html.en into the address bar of your browser and press ENTER; wait for the site loading; on the site you will be offered to download Tor Browser; download and run it, follow the installation instructions, wait until the installation is completed; run Tor Browser; connect with the button "Connect" (if you use the English version); a normal Internet browser window will be opened after the initialization; type or copy the address http://cerberhhyed5frqa.onion/AA89-A485-DC83-0006-4055 in this browser address bar; press ENTER; the site should be loaded; if for some reason the site is not loading wait for a moment and try again. If you have any problems during installation or operation of Tor Browser, please, visit https://www.youtube.com/ and type request in the search bar "install tor browser windows" and you will find a lot of training videos about Tor Browser installation and operation. If TOR address is not available for a long period (2-3 days) it means you are late; usually you have about 2-3 weeks after reading the instructions to restore your files. Additional information: You will find the instructions for restoring your files in those folders where you have your encrypted files only. The instructions are made in two file formats - HTML and TXT for your convenience. Unfortunately antivirus companies cannot protect or restore your files but they can make the situation worse removing the instructions how to restore your encrypted files. The instructions are not viruses; they have informative nature only, so any claims on the absence of any instruction files you can send to your antivirus company. Cerber Ransomware Project is not malicious and is not intended to harm a person and his/her information data. The project is created for the sole purpose of instruction regarding information security, as well as certification of antivirus software for their suitability for data protection. Together we make the Internet a better and safer place. If you look through this text in the Internet and realize that something is wrong with your files but you do not have any instructions to restore your files, please, contact your antivirus support. Remember that the worst situation already happened and now it depends on your determination and speed of your actions the further life of your files.
URLs

http://cerberhhyed5frqa.onion.to/AA89-A485-DC83-0006-4055

http://cerberhhyed5frqa.onion.cab/AA89-A485-DC83-0006-4055

http://cerberhhyed5frqa.onion.nu/AA89-A485-DC83-0006-4055

http://cerberhhyed5frqa.onion.link/AA89-A485-DC83-0006-4055

http://cerberhhyed5frqa.tor2web.org/AA89-A485-DC83-0006-4055

http://cerberhhyed5frqa.onion/AA89-A485-DC83-0006-4055

Signatures

  • Cerber

    Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.

  • Gozi RM3

    A heavily modified version of Gozi using RM3 loader.

  • suricata: ET MALWARE Ransomware/Cerber Checkin 2
  • suricata: ET MALWARE Ransomware/Cerber Checkin M3 (11)
  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Deletes itself 1 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 3 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 8 IoCs
  • Checks whether UAC is enabled 1 TTPs 1 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.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 2 IoCs
  • Modifies Control Panel 4 IoCs
  • Modifies Internet Explorer settings 1 TTPs 60 IoCs
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\392e471bab3700300378fd83bc108576acb6246f19c502972c00ddb4b9bac270.sample.exe
    "C:\Users\Admin\AppData\Local\Temp\392e471bab3700300378fd83bc108576acb6246f19c502972c00ddb4b9bac270.sample.exe"
    1⤵
    • Adds policy Run key to start application
    • Drops startup file
    • Loads dropped DLL
    • Adds Run key to start application
    • Modifies Control Panel
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1660
    • C:\Users\Admin\AppData\Roaming\{F7A21D6E-5744-E3E1-1E0E-7FCE223524B1}\netbtugc.exe
      "C:\Users\Admin\AppData\Roaming\{F7A21D6E-5744-E3E1-1E0E-7FCE223524B1}\netbtugc.exe"
      2⤵
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Drops startup file
      • Loads dropped DLL
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Sets desktop wallpaper using registry
      • Modifies Control Panel
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1280
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" C:\Users\Admin\Desktop\# DECRYPT MY FILES #.html
        3⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1680
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1680 CREDAT:275457 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:1688
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\# DECRYPT MY FILES #.txt
        3⤵
          PID:968
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\Desktop\# DECRYPT MY FILES #.vbs"
          3⤵
            PID:596
          • C:\Windows\system32\cmd.exe
            /d /c taskkill /t /f /im "netbtugc.exe" > NUL & ping -n 1 127.0.0.1 > NUL & del "C:\Users\Admin\AppData\Roaming\{F7A21D6E-5744-E3E1-1E0E-7FCE223524B1}\netbtugc.exe" > NUL
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:2252
            • C:\Windows\system32\taskkill.exe
              taskkill /t /f /im "netbtugc.exe"
              4⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:2288
            • C:\Windows\system32\PING.EXE
              ping -n 1 127.0.0.1
              4⤵
              • Runs ping.exe
              PID:2332
        • C:\Windows\SysWOW64\cmd.exe
          /d /c taskkill /t /f /im "392e471bab3700300378fd83bc108576acb6246f19c502972c00ddb4b9bac270.sample.exe" > NUL & ping -n 1 127.0.0.1 > NUL & del "C:\Users\Admin\AppData\Local\Temp\392e471bab3700300378fd83bc108576acb6246f19c502972c00ddb4b9bac270.sample.exe" > NUL
          2⤵
          • Deletes itself
          • Suspicious use of WriteProcessMemory
          PID:1604
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /t /f /im "392e471bab3700300378fd83bc108576acb6246f19c502972c00ddb4b9bac270.sample.exe"
            3⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1544
          • C:\Windows\SysWOW64\PING.EXE
            ping -n 1 127.0.0.1
            3⤵
            • Runs ping.exe
            PID:1808
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {798E8EE4-CE89-484A-85CE-128FA6F0A739} S-1-5-21-2513283230-931923277-594887482-1000:MRBKYMNO\Admin:Interactive:[1]
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:1568
        • C:\Users\Admin\AppData\Roaming\{F7A21D6E-5744-E3E1-1E0E-7FCE223524B1}\netbtugc.exe
          C:\Users\Admin\AppData\Roaming\{F7A21D6E-5744-E3E1-1E0E-7FCE223524B1}\netbtugc.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:1752
        • C:\Users\Admin\AppData\Roaming\{F7A21D6E-5744-E3E1-1E0E-7FCE223524B1}\netbtugc.exe
          C:\Users\Admin\AppData\Roaming\{F7A21D6E-5744-E3E1-1E0E-7FCE223524B1}\netbtugc.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          PID:1708
      • C:\Program Files\Internet Explorer\iexplore.exe
        "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
        1⤵
        • Modifies Internet Explorer settings
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1284
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1284 CREDAT:275457 /prefetch:2
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:284
      • C:\Windows\SysWOW64\DllHost.exe
        C:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}
        1⤵
          PID:1736
        • C:\Windows\system32\AUDIODG.EXE
          C:\Windows\system32\AUDIODG.EXE 0x1ac
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2052

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • memory/1660-60-0x00000000752F1000-0x00000000752F3000-memory.dmp

          Filesize

          8KB

        • memory/1680-76-0x000007FEFBD91000-0x000007FEFBD93000-memory.dmp

          Filesize

          8KB