Overview

overview

10

Static

static

10

revil_kasaya.exe

windows7_x64

10

Resubmissions

06-07-2021 11:37

210706-p53qbr7qe2 10

05-07-2021 18:31

210705-amslxqt9ea 10

04-07-2021 17:07

210704-587ycgna36 10

04-07-2021 16:29

210704-d622hysdcx 10

03-07-2021 14:55

210703-cggr9ffskx 10

Analysis

  • max time kernel
    149s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    06-07-2021 11:37

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    revil_kasaya.exe

  • Size

    136KB

  • MD5

    94d087166651c0020a9e6cc2fdacdc0c

  • SHA1

    99be22569ba9b1e49d3fd36f65faa6795672fcc0

  • SHA256

    9b11711efed24b3c6723521a7d7eb4a52e4914db7420e278aa36e727459d59dd

  • SHA512

    0f5a413e57e4cedf0a8df3b33cda3c2c0732ded58c367633e8677bf88786eb786b85c97420fda150fecb68db74dc00f77064c3ea77d00f53904413c9ea3a93ba

Score
10/10
evasionransomware

Malware Config

Extracted

Path

C:\pll56k969-readme.txt

Ransom Note
---=== Welcome. Again. ===--- [-] Whats HapPen? [-] Your files are encrypted, and currently unavailable. You can check it: all files on your system has extension pll56k969. By the way, everything is possible to recover (restore), but you need to follow our instructions. Otherwise, you cant return your data (NEVER). [+] What guarantees? [+] Its just a business. We absolutely do not care about you and your deals, except getting benefits. If we do not do our work and liabilities - nobody will not cooperate with us. Its not in our interests. To check the ability of returning files, You should go to our website. There you can decrypt one file for free. That is our guarantee. If you will not cooperate with our service - for us, its does not matter. But you will lose your time and data, cause just we have the private key. In practice - time is much more valuable than money. [+] How to get access on website? [+] You have two ways: 1) [Recommended] Using a TOR browser! a) Download and install TOR browser from this site: https://torproject.org/ b) Open our website: http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/8D91CF75053EEEB7 2) If TOR blocked in your country, try to use VPN! But you can use our secondary website. For this: a) Open your any browser (Chrome, Firefox, Opera, IE, Edge) b) Open our secondary website: http://decoder.re/8D91CF75053EEEB7 Warning: secondary website can be blocked, thats why first variant much better and more available. When you open our website, put the following data in the input form: Key: tczLAW1qqi9qhLJEHrsBAe20VlDLqpfhfr/IDyfCcyi0TVVKgOGIf5wmrnnLcbXn 7YtzHZk+c7h1YriWVwF1C0jQWNrYHPtyEt+0TBbp4BdZ0Hit5nxnUwj/JJ/5RXZ7 PJPrxT01TT0F98OYW5nuDwp77weZw2D0VHg+6B1rxDI5GfEgCB1r+ujo6CGDpWwL BGxWsMq+t7tD6EYEsWEJ98TWuB/PyYbrCM5r9CG75Dz1/08nYZao/ob0rXQ3Rsor Sw4UuXKVeZx0PT3MDqQZladEwsZHweXO9oPoM7Kc5y0m1I3SQTvfJXCDt+68mjai zR5XLC/WDUiOdQex+chrI+wLw0kbC5Uae2CuJIMYU4z7Zvz4lsD7JShbTiNESX8V qKB1mR2YjmKjxvoYG9Vtq0g4LTCFVZH92rxSH8G7hdFrnYi+aEsuQ9nTHY1U3Zw3 8uk9EPNj1Ahp1ozKxqPpNjgs+vqSRfyAarTUYxpl1Fc3puBZvwWmhjWDqpnDkxXl hlXLVfBipe/CncMVhtUyLYzOleSkvaiInBrIx+oVMF7Z8o5fMxZXMTZRVKQClvG6 0On/TERUW28dIptg/NXZ/Pp2Im/ZiWj4bwgE4TgN8eZykK+xq2L+otfWC00tKAem BNRCywt6lOCCzs/9nlgFGdl6evmW3SN6O6azA28V6dpNmvDnk/0v6XJqK5DU3roC MIsZ1Izzp1K9yNxem9r4PjqURiD7UTo3WGMkG90MqF2sdBOg0qj6/oQnRpv9EOAI 9xYLFa4aNqo17eOc8nyasCP/BF5IGmrghZ2Gn82caT6WhtH6ANvEdfNJI+hqOdSS CSeft/1fba0oaEE1WClpzCAtE2LcCwOmpU10DG+8jsMp+Nhlk5/Ug6zpvfedZYxF JWsN9hA3N8ipUkD5N6oq5uV4ZWpOLgiX6wpZM+GN0iRH8Cgee8mhUSJKfJZMNZSx 7i5hxeHzUrt34nW+modZd3JdQGgHKG1S9a71OkxbXdgXSe+MwtaYls3Km7uum4uv TtAhPWzEBSeK6V5k/+ajx7W6Zd/mJFrZ8O2lP6M9xIK2nklPdtxPVNctb8yV+UZQ NYLafvVbFH+guAw1fudMoEKCeGDIEq03Aq+V+6PAZSKF4KhpjMrRw/1OMypcF0Rh iNnH7XcrbZRR+Y2d8bK3cS4ulnLccBSYQcuhtn5hexpRGZ3FqfgBWhAg1nNqdCch eoxquyhzifV6u49jwTytaZpgQ4+QZ+7J7zmLWD0XLTCDuoBQMIvdZ/SKoUI9rUnS ZFkJoxtLjUhvVRzVTAIh8H8a1rJ8kpfxg7AAlg== ----------------------------------------------------------------------------------------- !!! DANGER !!! DON'T try to change files by yourself, DON'T use any third party software for restoring your data or antivirus solutions - its may entail damage of the private key and, as result, The Loss all data. !!! !!! !!! ONE MORE TIME: Its in your interests to get your files back. From our side, we (the best specialists) make everything for restoring, but please should not interfere. !!! !!! !!!
URLs

http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/8D91CF75053EEEB7

http://decoder.re/8D91CF75053EEEB7

Signatures

  • Modifies Windows Firewall 1 TTPs
    evasion
  • Modifies extensions of user files 1 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Enumerates connected drives 3 TTPs 25 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • Drops file in Program Files directory 37 IoCs
  • Enumerates physical storage devices 1 TTPs

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\revil_kasaya.exe
    "C:\Users\Admin\AppData\Local\Temp\revil_kasaya.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1080
    • C:\Windows\SysWOW64\netsh.exe
      netsh advfirewall firewall set rule group="Network Discovery" new enable=Yes
      2⤵
        PID:1252
    • C:\Windows\system32\wbem\unsecapp.exe
      C:\Windows\system32\wbem\unsecapp.exe -Embedding
      1⤵
        PID:1884
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:360

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1080-59-0x00000000768B1000-0x00000000768B3000-memory.dmp

        Filesize

        8KB

        Download

      • memory/1252-60-0x0000000000000000-mapping.dmp

        Download