Overview

overview

10

Static

static

10

20240906b4...op.exe

windows7-x64

10

20240906b4...op.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    06/09/2024, 06:37

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General

  • Target
    20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
  • Size 1.1MB
  • Sample240906-hdvpds1fpr
  • SHA256 e5d1067f803ffebbca20c29d6be72c150ffbc23a2ba5c017a68bbd70ba6eb451
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
djvudiscoverypersistenceransomware

Malware Config

Extracted

Family

  • djvu

C2

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

Attributes
  • extension

    .sspq

  • offline_id

    ppmn5q6DzrybvhIkCuuqaearFxJ8Rc3difSaWft1

  • 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-eglcxvZv1s 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: 0304ewgfDd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 1 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

    ransomwaredjvu
  • Renames multiple (155) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    ransomware
  • 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 8 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
    "C:\Users\Admin\AppData\Local\Temp\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.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:2124
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\ce3fa43b-a393-413b-97c1-4dab105ae95a" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:3028
    • C:\Users\Admin\AppData\Local\Temp\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
      "C:\Users\Admin\AppData\Local\Temp\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:3736
  • C:\Users\Admin\AppData\Local\ce3fa43b-a393-413b-97c1-4dab105ae95a\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
    C:\Users\Admin\AppData\Local\ce3fa43b-a393-413b-97c1-4dab105ae95a\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe --Task
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    PID:1284

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        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 0afdfdb9bc37873e54fe160078caa8ed915994dde25f3447cb52f28199b95ca7
        • MD5 SHA1 SHA512
        Submit Download

        B46811C17859FFB409CF0E904A4AA8F8
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
        • Size 170B
        • SHA256 c8971880b9edc33c229c464f34e5a0ca7a38caee4a0f5cb2919e082565b73e85
        • MD5 SHA1 SHA512
        Submit Download

        20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
        • Path C:\Users\Admin\AppData\Local\ce3fa43b-a393-413b-97c1-4dab105ae95a\20240906b44a4cb8600e10c1c9fc218f1af0abdbstop.exe
        • Size 1.1MB
        • SHA256 e5d1067f803ffebbca20c29d6be72c150ffbc23a2ba5c017a68bbd70ba6eb451
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download