Analysis

  • max time kernel
    145s
  • max time network
    150s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    13-05-2021 13:26

General

  • Target

    1d4c0b32aea68056755daf70689699200ffa09688495ccd65a0907cade18bd2a.exe

  • Size

    60KB

  • MD5

    c4da0137cbb99626fd44da707ae1bca8

  • SHA1

    a38e9891152755d9e7fff7386bb5a1bca375bd91

  • SHA256

    1d4c0b32aea68056755daf70689699200ffa09688495ccd65a0907cade18bd2a

  • SHA512

    dd8212ff73522c6590ff8d8a3a48276fd872649eada2315b045c8c9f6cf054c3fe6cd741a16744eb82eff763acb745f07336c44db8f0c693770180cf7fd90645

Malware Config

Extracted

Path

C:\\README.aeef1a75.TXT

Family

darkside

Ransom Note
----------- [ Welcome to Dark Side] -------------> What happend? ---------------------------------------------- Your computers and servers are encrypted, backups are deleted. We use strong encryption algorithms, so you cannot decrypt your data. But you can restore everything by purchasing a special program from us - universal decryptor. This program will restore all your network. Follow our instructions below and you will recover all your data. Data leak ---------------------------------------------- First of all we have uploaded more then 100 GB data. Example of data: - Accounting data - Executive data - Sales data - Customer Support data - Marketing data - Quality data - And more other... Your personal leak page: http://darksidedxcftmqa.onion/blog/article/id/6/dQDclB_6Kg-c-6fJesONyHoaKh9BtI8j9Wkw2inG8O72jWaOcKbrxMWbPfKrUbHC The data is preloaded and will be automatically published if you do not pay. After publication, your data will be available for at least 6 months on our tor cdn servers. We are ready: - To provide you the evidence of stolen data - To give you universal decrypting tool for all encrypted files. - To delete all the stolen data. What guarantees? ---------------------------------------------- We value our reputation. If we do not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is perfectly tested and will decrypt your data. We will also provide support in case of problems. We guarantee to decrypt one file for free. Go to the site and contact us. How to get access on website? ---------------------------------------------- Using a TOR browser: 1) Download and install TOR browser from this site: https://torproject.org/ 2) Open our website: http://darksidfqzcuhtk2.onion/K71D6P88YTX04R3ISCJZHMD5IYV55V9247QHJY0HJYUXX68H2P05XPRIR5SP2U68 When you open our website, put the following data in the input form: Key: pr9gzRnMz6qEwr6ovMT0cbjd9yT56NctfQZGIiVVLgo0ME2EQpAUyZucG9BLrOJjno5XLPvCN11TFfnlFHa42u5mJxoeR5k5RUgQAC1MC6LBUj4YOOAUyiBrR HQSUM3pzGoEPRVOzXSZ8YqkJyFL0TDFBbWaBKQDOSo9GzKKoVRQ0Eb02F5geTPkTAqZZSfSQ6PBBlTGPSgGe2kCyuwwp7lDmRSJlNnHssMMZHVhXzyZ6fxiBY gNiuusFK8JNI5nrtRPp3bMAc6OEddxfJWj6o2GT1Xg9j87Jp4Oyv43E1J61jLJAWBkmoBB3Gqv07mtyDW5PnmxBlNzABbLFEvJMQL23sR8nnw4svzcZHxrqD1 xRcxqyeKtsaQ5yqLvyQgMdnrI2QoCqkHYYUfBIzjO8BXyBZdmjHanXE57jdDAhjaDUUqfL917cCyJr1uwVR0Xj5lJXe8BIKHd3dFrz70CsIXFAhicOsBlFzIn daNcAXXyL8Fg1avIXOcuEkGRDXt8Cs8b3TAB6n4DrbLJdiFjECo8yCA9pxvzqjXatumUloblWFZaUoLVYzP !!! DANGER !!! DO NOT MODIFY or try to RECOVER any files yourself. We WILL NOT be able to RESTORE them. !!! DANGER !!!
URLs

http://darksidedxcftmqa.onion/blog/article/id/6/dQDclB_6Kg-c-6fJesONyHoaKh9BtI8j9Wkw2inG8O72jWaOcKbrxMWbPfKrUbHC

http://darksidfqzcuhtk2.onion/K71D6P88YTX04R3ISCJZHMD5IYV55V9247QHJY0HJYUXX68H2P05XPRIR5SP2U68

Signatures

  • DarkSide

    Targeted ransomware first seen in August 2020. Operators steal data to use as leverage.

  • Modifies extensions of user files 13 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Drops startup file 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Drops file in System32 directory 10 IoCs
  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Checks processor information in registry 2 TTPs 6 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 10 IoCs
  • Modifies Control Panel 2 IoCs
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 44 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1d4c0b32aea68056755daf70689699200ffa09688495ccd65a0907cade18bd2a.exe
    "C:\Users\Admin\AppData\Local\Temp\1d4c0b32aea68056755daf70689699200ffa09688495ccd65a0907cade18bd2a.exe"
    1⤵
      PID:1016
    • C:\Users\Admin\AppData\Local\Temp\1d4c0b32aea68056755daf70689699200ffa09688495ccd65a0907cade18bd2a.exe
      "C:\Users\Admin\AppData\Local\Temp\1d4c0b32aea68056755daf70689699200ffa09688495ccd65a0907cade18bd2a.exe"
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:4088
      • C:\Users\Admin\AppData\Local\Temp\1d4c0b32aea68056755daf70689699200ffa09688495ccd65a0907cade18bd2a.exe
        "C:\Users\Admin\AppData\Local\Temp\1d4c0b32aea68056755daf70689699200ffa09688495ccd65a0907cade18bd2a.exe"
        2⤵
        • Sets desktop wallpaper using registry
        • Modifies Control Panel
        • Modifies data under HKEY_USERS
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:820
        • C:\Users\Admin\AppData\Local\Temp\1d4c0b32aea68056755daf70689699200ffa09688495ccd65a0907cade18bd2a.exe
          C:\Users\Admin\AppData\Local\Temp\1d4c0b32aea68056755daf70689699200ffa09688495ccd65a0907cade18bd2a.exe -work worker0 -path \\?\C:\
          3⤵
          • Modifies extensions of user files
          • Drops startup file
          PID:1348
    • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
      "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
      1⤵
      • Drops file in System32 directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies data under HKEY_USERS
      • Suspicious use of SetWindowsHookEx
      PID:1016
    • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
      1⤵
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:812
    • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
      "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
      1⤵
      • Drops file in System32 directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies data under HKEY_USERS
      • Suspicious use of SetWindowsHookEx
      PID:3816
    • C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe
      "C:\Windows\SystemApps\Microsoft.Windows.Cortana_cw5n1h2txyewy\SearchUI.exe" -ServerName:CortanaUI.AppXa50dqqa5gqv4a428c9y1jjw7m3btvepj.mca
      1⤵
      • Enumerates system info in registry
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:3528

    Network

    MITRE ATT&CK Enterprise v6

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    Downloads