Overview

overview

10

Static

static

10

2024-08-08...op.exe

windows7-x64

10

2024-08-08...op.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    98s
  • max time network
    105s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/08/2024, 11:16

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General

  • Target
    2024-08-08_c11cf10ac6c3b434565b929ddf84c534_stop.exe
  • Size 1.1MB
  • Sample240808-ndmaxasgmq
  • SHA256 8268b6324c6890e1c93813ebbef9164c962af7be7a67f930c00e7879e1115014
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
djvudiscoverypersistenceransomware

Malware Config

Extracted

Family

  • djvu

C2

  • http://drampik.com/test1/get.php

Attributes
  • extension

    .mzqw

  • offline_id

    ex4uvTKsM2vEkIcr3MjXi2C6v27h1mS682iUXGt1

  • payload_url

    http://uaery.top/dl/build2.exe

    http://drampik.com/files/1/build3.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-cud8EGMtyB 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: 0635JOsie

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.

  • 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 3 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 3 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 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-08-08_c11cf10ac6c3b434565b929ddf84c534_stop.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-08-08_c11cf10ac6c3b434565b929ddf84c534_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:3520
    • C:\Windows\SysWOW64\icacls.exe
      icacls "C:\Users\Admin\AppData\Local\2aa9a93a-30cb-4a9c-ab71-756110cb1dc1" /deny *S-1-1-0:(OI)(CI)(DE,DC)
      2⤵
      • Modifies file permissions
      • System Location Discovery: System Language Discovery
      PID:4648
    • C:\Users\Admin\AppData\Local\Temp\2024-08-08_c11cf10ac6c3b434565b929ddf84c534_stop.exe
      "C:\Users\Admin\AppData\Local\Temp\2024-08-08_c11cf10ac6c3b434565b929ddf84c534_stop.exe" --Admin IsNotAutoStart IsNotTask
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      PID:4644

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 945d02bc8601069be2c606d13378fdfcc7324c584edf13acc873b58db7c9fa2f
        • MD5 SHA1 SHA512
        Submit Download

        B46811C17859FFB409CF0E904A4AA8F8
        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8
        • Size 170B
        • SHA256 541e68eb13ea7629da14fa918182cfc590c980585bf10182bc60a4e933c4c268
        • MD5 SHA1 SHA512
        Submit Download

        2024-08-08_c11cf10ac6c3b434565b929ddf84c534_stop.exe
        • Path C:\Users\Admin\AppData\Local\2aa9a93a-30cb-4a9c-ab71-756110cb1dc1\2024-08-08_c11cf10ac6c3b434565b929ddf84c534_stop.exe
        • Size 1.1MB
        • SHA256 8268b6324c6890e1c93813ebbef9164c962af7be7a67f930c00e7879e1115014
        • MD5 SHA1 SHA512 SSDEEP
        Submit Download