Overview

overview

10

Static

static

1

99f82c9a80...65.exe

windows7-x64

10

99f82c9a80...65.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    145s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30/03/2023, 12:29

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General

  • Target
    99f82c9a80fc6556f28e50e2889d59325e8169dc3742bf34121dc85207c6d965.exe
  • Size 889KB
  • Sample230330-ppdzcacf43
  • SHA256 99f82c9a80fc6556f28e50e2889d59325e8169dc3742bf34121dc85207c6d965
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
ransomware

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: 6ca692aa-6261-4aac-ba3a-c82d08b065bc *!* 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

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 9 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Modifies registry class 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Users\Admin\AppData\Local\Temp\99f82c9a80fc6556f28e50e2889d59325e8169dc3742bf34121dc85207c6d965.exe
    "C:\Users\Admin\AppData\Local\Temp\99f82c9a80fc6556f28e50e2889d59325e8169dc3742bf34121dc85207c6d965.exe"
    1⤵
    • Modifies extensions of user files
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:5056
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4184
      • C:\Windows\system32\vssadmin.exe
        C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1344
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2796

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        instructions_read_me.txt
        • Path C:\Program Files (x86)\instructions_read_me.txt
        • Size 1KB
        • SHA256 fe0eab1bee3a2d9b7cf29c6a5e12f2f6659e1964b571072763cbcefa2a017afe
        • MD5 SHA1 SHA512
        Submit Download