Analysis

  • max time kernel
    150s
  • max time network
    80s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    27/03/2023, 10:24

General

  • Target
    1c711ca465.dll
  • Size 1.9MB
  • Sample230327-mfe4yafa6x
  • SHA256 1c711ca465dace4d2a8d0542e75410c417375c4ee484294fcd959e99651fccb8
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10

Malware Config

Extracted

Path
  • C:\Program Files (x86)\instructions_read_me.txt

Ransom Note
  • ATTENTION! Your network has been breached and all data was encrypted. Please contact us at: https://bastad5huzwkepdixedg2gekg7jk22ato24zyllp6lnjx7wdtyctgvyd.onion/ Login ID: b3755e21-718d-4a53-a71f-ce2cf26b0e02 *!* To access .onion websites download and install Tor Browser at: https://www.torproject.org/ (Tor Browser is not related to us) *!* To restore all your PCs and get your network working again, follow these instructions: - Any attempts to modify, decrypt or rename the files will lead to its fatal corruption. It doesn't matter, who are trying to do this, either it will be your IT guys or a recovery agency. Please follow these simple rules to avoid data corruption: - Do not modify, rename or delete files. Any attempts to modify, decrypt or rename the files will lead to its fatal corruption. - Do not hire a recovery company. They can't decrypt without the key. They also don't care about your business. They believe that they are good negotiators, but it is not. They usually fail. So speak for yourself. Waiting you in a chat.
URLs
  • https://bastad5huzwkepdixedg2gekg7jk22ato24zyllp6lnjx7wdtyctgvyd.onion/

Signatures

  • Drops file in Program Files directory 55 IoCs
  • Modifies registry class 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\1c711ca465.dll,#1
    1⤵
    • Drops file in Program Files directory
    • Modifies registry class
    PID:112

Network

        MITRE ATT&CK Matrix

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        instructions_read_me.txt

        • Path C:\Program Files (x86)\instructions_read_me.txt
        • Size 1KB
        • SHA256 729562c350ab7780794b13fc00506bea1928f294eadf78145264d1c5b3180368
        • MD5 SHA1 SHA512

        memory/112-54-0x0000000180000000-0x0000000180108000-memory.dmp

        memory/112-56-0x0000000180000000-0x0000000180108000-memory.dmp

        memory/112-64-0x0000000180000000-0x0000000180108000-memory.dmp

        memory/112-114-0x0000000002D80000-0x0000000002E88000-memory.dmp