Analysis

  • max time kernel
    157s
  • max time network
    39s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:17

General

  • Target

    3ba905e1cda7307163d4c8fe3fd03c2fbce7eda030522084e33d0604c204630e.bin.exe

  • Size

    69KB

  • MD5

    6a64553da499c1d9a64d97f4de3882f5

  • SHA1

    6d35e6ae28e9e28ea650cfefd70eff1eaa15296b

  • SHA256

    3ba905e1cda7307163d4c8fe3fd03c2fbce7eda030522084e33d0604c204630e

  • SHA512

    11ee2422f2199e6cf0d9e7eb0dc92c20d17557877e42b632bd300281886f72564d92878d04f932e883eacb138496d0316e471c3858099a5e823109beb41bbe02

Malware Config

Extracted

Path

C:\ProgramData\Microsoft\OfficeSoftwareProtectionPlatform\Cache\9E147F-Readme.txt

Ransom Note
Hi University of Seattle, Your files are encrypted. All encrypted files for this computer has extension: .9e147f -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_9e147f: rMA5AywC8FVXl3FQqYtZZjJxdtY0u7txki7xSImAhrJgMAxFPO zftqr8pUqKh89YyEt8c7fco/OqWlntB4T5KnTZTPzhsR05zhvv 9Gg9UzwTUyqmX2l5h7bmsfIuwUzvO1rmftgHz6unq5Btp3a/i1 wtzK7/CByerrIx+nnqWoVOwavY2FI/eQlbP4n1Hc4CITNOog+y Dezs+cJuzRuj1NogfBrHDZc83Qpezn+OTcNUvjnqwK0dasvNdl dZynzsfFqhZy9M88mwWsIOrfVsMTETw5b43/IZOA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files\Google\Chrome\Application\SetupMetrics\9E147F-Readme.txt

Ransom Note
Hi University of Seattle, Your files are encrypted. All encrypted files for this computer has extension: .9e147f -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_9e147f: rMA5AywC8FVXl3FQqYtZZjJxdtY0u7txki7xSImAhrJgMAxFPO zftqr8pUqKh89YyEt8c7fco/OqWlntB4T5KnTZTPzhsR05zhvv 9Gg9UzwTUyqmX2l5h7bmsfIuwUzvO1rmftgHz6unq5Btp3a/i1 wtzK7/CByerrIx+nnqWoVOwavY2FI/eQlbP4n1Hc4CITNOog+y Dezs+cJuzRuj1NogfBrHDZc83Qpezn+OTcNUvjnqwK0dasvNdl dZynzsfFqhZy9M88mwWsIOrfVsMTETw5b43/IZOA==}Hi University of Seattle, Your files are encrypted. All encrypted files for this computer has extension: .9e147f -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised. Rebooting/shutdown will cause you to lose files without the possibility of recovery. -- Our encryption algorithms are very strong and your files are very well protected, the only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_9e147f: rMA5AywC8FVXl3FQqYtZZjJxdtY0u7txki7xSImAhrJgMAxFPO zftqr8pUqKh89YyEt8c7fco/OqWlntB4T5KnTZTPzhsR05zhvv 9Gg9UzwTUyqmX2l5h7bmsfIuwUzvO1rmftgHz6unq5Btp3a/i1 wtzK7/CByerrIx+nnqWoVOwavY2FI/eQlbP4n1Hc4CITNOog+y Dezs+cJuzRuj1NogfBrHDZc83Qpezn+OTcNUvjnqwK0dasvNdl dZynzsfFqhZy9M88mwWsIOrfVsMTETw5b43/IZOA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 5 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Modifies service 2 TTPs 5 IoCs
  • Drops file in Program Files directory 7186 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 22900 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3ba905e1cda7307163d4c8fe3fd03c2fbce7eda030522084e33d0604c204630e.bin.exe
    "C:\Users\Admin\AppData\Local\Temp\3ba905e1cda7307163d4c8fe3fd03c2fbce7eda030522084e33d0604c204630e.bin.exe"
    1⤵
    • Modifies extensions of user files
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1064
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1988
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Modifies service
    • Suspicious use of AdjustPrivilegeToken
    PID:6692

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Defense Evasion

File Deletion

2
T1107

Modify Registry

1
T1112

Credential Access

Credentials in Files

1
T1081

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

2
T1490

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1988-0-0x0000000000000000-mapping.dmp