Overview

overview

10

Static

static

10

2024-09-04...op.exe

windows7-x64

10

2024-09-04...op.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    143s
  • max time network
    144s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/09/2024, 03:46

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General

  • Target
    2024-09-04_591b5afb1f701910bb6b2a95e83b9f15_stop.exe
  • Size 1.1MB
  • Sample240904-ebp5cavalm
  • SHA256 25fee0d9c2bf841ad0c0271a34e450d2a82dcc91d6fd7c669b9882fc436e06ea
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
djvudiscoverypersistenceransomware

Malware Config

Extracted

Family

  • djvu

C2

  • http://vrta.top/nddddhsspen6/get.php

Attributes
  • extension

    .qscx

  • offline_id

    1CWYcKrbjXlx3TNdvKiBjYphw1eJfZy1dzTnE8t1

  • payload_url

    http://vrta.top/files/penelop/updatewin1.exe

    http://vrta.top/files/penelop/updatewin2.exe

    http://vrta.top/files/penelop/updatewin.exe

    http://vrta.top/files/penelop/3.exe

    http://vrta.top/files/penelop/4.exe

    http://vrta.top/files/penelop/5.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-V2fE396VPW Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0303ewgfDd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 1 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

    ransomwaredjvu
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
    discovery
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-09-04_591b5afb1f701910bb6b2a95e83b9f15_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-09-04_591b5afb1f701910bb6b2a95e83b9f15_stop.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:460
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\4d899bc8-cc10-43f3-8527-8f72f76eca21" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:1644
    • C:\Users\Admin\AppData\Local\Temp\2024-09-04_591b5afb1f701910bb6b2a95e83b9f15_stop.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-09-04_591b5afb1f701910bb6b2a95e83b9f15_stop.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:228
  • C:\Users\Admin\AppData\Local\4d899bc8-cc10-43f3-8527-8f72f76eca21\2024-09-04_591b5afb1f701910bb6b2a95e83b9f15_stop.exe
    C:\Users\Admin\AppData\Local\4d899bc8-cc10-43f3-8527-8f72f76eca21\2024-09-04_591b5afb1f701910bb6b2a95e83b9f15_stop.exe --Task
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    PID:2276

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Size 1KB
        • SHA256 33a39e9ec2133230533a686ec43760026e014a3828c703707acbc150fe40fd6f
        • MD5 SHA1 SHA512
        Submit Download

        B46811C17859FFB409CF0E904A4AA8F8
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8
        • Size 436B
        • SHA256 f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895
        • MD5 SHA1 SHA512
        Submit Download

        8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12
        • Size 174B
        • SHA256 c05782e5f4389aefc89dbed53bf093fd72b14bd046e7271afcc0653a7b3823b7
        • MD5 SHA1 SHA512
        Submit Download

        B46811C17859FFB409CF0E904A4AA8F8
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
        • Size 170B
        • SHA256 fb7399f57f0bd4c6edb725a5ad33994ddf6c8a77f6b0bd420637fc0772271f59
        • MD5 SHA1 SHA512
        Submit Download

        2024-09-04_591b5afb1f701910bb6b2a95e83b9f15_stop.exe
        • Path C:\Users\Admin\AppData\Local\4d899bc8-cc10-43f3-8527-8f72f76eca21\2024-09-04_591b5afb1f701910bb6b2a95e83b9f15_stop.exe
        • Size 1.1MB
        • SHA256 25fee0d9c2bf841ad0c0271a34e450d2a82dcc91d6fd7c669b9882fc436e06ea
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download