Overview

overview

10

Static

static

1

49ec36f036...2b.exe

windows7-x64

10

49ec36f036...2b.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    117s
  • 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, 12:30

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General

  • Target
    49ec36f03629f5993e496cfee6c5274c5f1db49bde704ef77ffe05fedd60e82b.exe
  • Size 889KB
  • Sample230330-pppe3scf46
  • SHA256 49ec36f03629f5993e496cfee6c5274c5f1db49bde704ef77ffe05fedd60e82b
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
persistenceransomware

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: 9b668179-170d-4309-8462-3dd1aecdd5d4 *!* 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 6 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • 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\49ec36f03629f5993e496cfee6c5274c5f1db49bde704ef77ffe05fedd60e82b.exe
    "C:\Users\Admin\AppData\Local\Temp\49ec36f03629f5993e496cfee6c5274c5f1db49bde704ef77ffe05fedd60e82b.exe"
    1⤵
    • Modifies extensions of user files
    • Adds Run key to start application
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:5100
    • 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:4204
      • C:\Windows\system32\vssadmin.exe
        C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:5032
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2736

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 db0d217ab722978f71dad4175d69d51e785d829100402c7fb186bca4615d3faa
        • MD5 SHA1 SHA512
        Submit Download