Overview

overview

10

Static

static

7a61ca0cd6...d1.exe

windows7_x64

10

7a61ca0cd6...d1.exe

windows10_x64

10

Analysis

  • max time kernel
    151s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    12/11/2020, 14:08

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General

  • Target
    7a61ca0cd624f85a02a3d168764a589593ff19ca4edb41be92f16ffb521ffad1.exe
  • Size 270KB
  • Sample201112-eh4136a3ws
  • SHA256 7a61ca0cd624f85a02a3d168764a589593ff19ca4edb41be92f16ffb521ffad1
  • MD5 SHA1 SHA512
Score
10/10
cerberevasionpersistenceransomwarespywaretrojan

Malware Config

Extracted

Path

  • C:\Users\Admin\Documents\# DECRYPT MY FILES #.txt

  • 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" has !!! been removed from your computer. !!! HTML instruction ("# DECRYPT MY FILES #.html") always contains a !!! working domain of your personal page! ######################################################################### 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://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6 | | 2. http://bqyjebfh25oellur.onion.cab/21A6-29AE-0C63-0072-86D6 | | 3. http://bqyjebfh25oellur.onion.nu/21A6-29AE-0C63-0072-86D6 | | 4. http://bqyjebfh25oellur.onion.link/21A6-29AE-0C63-0072-86D6 | | 5. http://bqyjebfh25oellur.tor2web.org/21A6-29AE-0C63-0072-86D6 |_______________________________________________________________________ ######################################################################### 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://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6); 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://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6 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://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6); 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://bqyjebfh25oellur.onion/21A6-29AE-0C63-0072-86D6 | |________________________________________________________| 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://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6

  • http://bqyjebfh25oellur.onion.cab/21A6-29AE-0C63-0072-86D6

  • http://bqyjebfh25oellur.onion.nu/21A6-29AE-0C63-0072-86D6

  • http://bqyjebfh25oellur.onion.link/21A6-29AE-0C63-0072-86D6

  • http://bqyjebfh25oellur.tor2web.org/21A6-29AE-0C63-0072-86D6

  • http://bqyjebfh25oellur.onion/21A6-29AE-0C63-0072-86D6

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" 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: Please wait... http://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6(Get a NEW address!) http://bqyjebfh25oellur.onion.cab/21A6-29AE-0C63-0072-86D6 http://bqyjebfh25oellur.onion.nu/21A6-29AE-0C63-0072-86D6 http://bqyjebfh25oellur.onion.link/21A6-29AE-0C63-0072-86D6 http://bqyjebfh25oellur.tor2web.org/21A6-29AE-0C63-0072-86D6 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 Please wait... http://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6); 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 Please wait... http://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6 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 Please wait... http://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6); 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://bqyjebfh25oellur.onion/21A6-29AE-0C63-0072-86D6 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://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6(Get

  • http://bqyjebfh25oellur.onion.cab/21A6-29AE-0C63-0072-86D6

  • http://bqyjebfh25oellur.onion.nu/21A6-29AE-0C63-0072-86D6

  • http://bqyjebfh25oellur.onion.link/21A6-29AE-0C63-0072-86D6

  • http://bqyjebfh25oellur.tor2web.org/21A6-29AE-0C63-0072-86D6

  • http://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6);

  • http://bqyjebfh25oellur.onion.to/21A6-29AE-0C63-0072-86D6

  • http://bqyjebfh25oellur.onion/21A6-29AE-0C63-0072-86D6

Signatures

  • Cerber

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

    ransomwarecerber
  • Adds policy Run key to start application 2 TTPs 2 IoCs
    persistence
  • Executes dropped EXE 3 IoCs
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Deletes itself 1 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spyware
  • Adds Run key to start application 2 TTPs 8 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • JavaScript code in executable 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
    ransomware
  • Drops file in Program Files directory 15 IoCs
  • Kills process with taskkill 2 IoCs
    evasion
  • Modifies Control Panel 4 IoCs
    evasion
  • Modifies Internet Explorer settings 1 TTPs 55 IoCs
    adwarespyware
  • Runs ping.exe 1 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 240 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of UnmapMainImage 4 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7a61ca0cd624f85a02a3d168764a589593ff19ca4edb41be92f16ffb521ffad1.exe
    "C:\Users\Admin\AppData\Local\Temp\7a61ca0cd624f85a02a3d168764a589593ff19ca4edb41be92f16ffb521ffad1.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 UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:288
    • C:\Users\Admin\AppData\Roaming\{886FFC81-3F92-2114-B483-51AF935A6426}\DisplaySwitch.exe
      "C:\Users\Admin\AppData\Roaming\{886FFC81-3F92-2114-B483-51AF935A6426}\DisplaySwitch.exe"
      2⤵
      • Adds policy Run key to start application
      • Executes dropped EXE
      • Modifies extensions of user files
      • Drops startup file
      • Loads dropped DLL
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Sets desktop wallpaper using registry
      • Drops file in Program Files directory
      • Modifies Control Panel
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:2020
      • 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:1728
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1728 CREDAT:275457 /prefetch:2
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:1340
      • C:\Windows\system32\NOTEPAD.EXE
        "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\# DECRYPT MY FILES #.txt
        3⤵
          PID:1580
        • C:\Windows\System32\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\Desktop\# DECRYPT MY FILES #.vbs"
          3⤵
            PID:1096
          • C:\Windows\system32\cmd.exe
            /d /c taskkill /t /f /im "DisplaySwitch.exe" > NUL & ping -n 1 127.0.0.1 > NUL & del "C:\Users\Admin\AppData\Roaming\{886FFC81-3F92-2114-B483-51AF935A6426}\DisplaySwitch.exe" > NUL
            3⤵
            • Suspicious use of WriteProcessMemory
            PID:1408
            • C:\Windows\system32\taskkill.exe
              taskkill /t /f /im "DisplaySwitch.exe"
              4⤵
              • Kills process with taskkill
              • Suspicious use of AdjustPrivilegeToken
              PID:2016
            • C:\Windows\system32\PING.EXE
              ping -n 1 127.0.0.1
              4⤵
              • Runs ping.exe
              PID:2152
        • C:\Windows\SysWOW64\cmd.exe
          /d /c taskkill /t /f /im "7a61ca0cd624f85a02a3d168764a589593ff19ca4edb41be92f16ffb521ffad1.exe" > NUL & ping -n 1 127.0.0.1 > NUL & del "C:\Users\Admin\AppData\Local\Temp\7a61ca0cd624f85a02a3d168764a589593ff19ca4edb41be92f16ffb521ffad1.exe" > NUL
          2⤵
          • Deletes itself
          • Suspicious use of WriteProcessMemory
          PID:2044
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /t /f /im "7a61ca0cd624f85a02a3d168764a589593ff19ca4edb41be92f16ffb521ffad1.exe"
            3⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:1408
          • C:\Windows\SysWOW64\PING.EXE
            ping -n 1 127.0.0.1
            3⤵
            • Runs ping.exe
            PID:1616
      • C:\Windows\system32\taskeng.exe
        taskeng.exe {FA0910E9-BE19-4BC2-97F2-15103AE9C7C3} S-1-5-21-293278959-2699126792-324916226-1000:TUICJFPF\Admin:Interactive:[1]
        1⤵
        • Suspicious use of WriteProcessMemory
        PID:1612
        • C:\Users\Admin\AppData\Roaming\{886FFC81-3F92-2114-B483-51AF935A6426}\DisplaySwitch.exe
          C:\Users\Admin\AppData\Roaming\{886FFC81-3F92-2114-B483-51AF935A6426}\DisplaySwitch.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of UnmapMainImage
          PID:1352
        • C:\Users\Admin\AppData\Roaming\{886FFC81-3F92-2114-B483-51AF935A6426}\DisplaySwitch.exe
          C:\Users\Admin\AppData\Roaming\{886FFC81-3F92-2114-B483-51AF935A6426}\DisplaySwitch.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of UnmapMainImage
          PID:2004
      • 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:856
        • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
          "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:856 CREDAT:275457 /prefetch:2
          2⤵
          • Modifies Internet Explorer settings
          • Suspicious use of SetWindowsHookEx
          PID:1672
      • C:\Windows\SysWOW64\DllHost.exe
        C:\Windows\SysWOW64\DllHost.exe /Processid:{3F6B5E16-092A-41ED-930B-0B4125D91D4E}
        1⤵
          PID:1440
        • C:\Windows\system32\AUDIODG.EXE
          C:\Windows\system32\AUDIODG.EXE 0x5a0
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:1304

        Network

              MITRE ATT&CK Enterprise v6

              Replay Monitor

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              Downloads

              memory/1800-6-0x000007FEF7140000-0x000007FEF73BA000-memory.dmp
              Download