Overview

overview

10

Static

static

3

buildz.exe

windows7-x64

10

buildz.exe

windows10-1703-x64

10

buildz.exe

windows10-2004-x64

10

buildz.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    buildz.exe

  • Size

    709KB

  • Sample

    241005-rmybbavcqm

  • MD5

    b7cb7f2b5cd9bd047710650295dc88f7

  • SHA1

    3740ba8e89055cb0f5068ec9176b05c77432e799

  • SHA256

    e01c0429a58b33013305aab35ef863cd2b88962e479e39566a687ca37c68510f

  • SHA512

    e6bd45366d067dcc6cdcdc4d917c4e819942caccf22b64a1b1cf45199cdbf58defa0773a8d6a76c0672db2824a724018253efb0db1a0baf0c2f105d07758b471

  • SSDEEP

    12288:9CwgCcyMy1Nncixi2NWXCAcrIQBjljKsFKfFDKZNF:9cCp9KGiAAcUwjljKAK8ZNF

Score
10/10
djvudiscoverypersistenceransomware

Malware Config

Extracted

Family

djvu

C2

http://cajgtus.com/lancer/get.php

Attributes
  • extension

    .qual

  • offline_id

    KLbRmn6on3AXGFgDLGtd0IkHmV7uHw9VxlcxO5t1

  • payload_url

  • 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. Do not ask assistants from youtube and recovery data sites for help in recovering your data. They can use your free decryption quota and scam you. Our contact is emails in this text document only. You can get and look video overview decrypt tool. Price of private key and decrypt software is $999. Discount 50% available if you contact us first 72 hours, that's price for you is $499. 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: 0876qual

rsa_pubkey.plain

Targets

    • Target

      buildz.exe

    • Size

      709KB

    • MD5

      b7cb7f2b5cd9bd047710650295dc88f7

    • SHA1

      3740ba8e89055cb0f5068ec9176b05c77432e799

    • SHA256

      e01c0429a58b33013305aab35ef863cd2b88962e479e39566a687ca37c68510f

    • SHA512

      e6bd45366d067dcc6cdcdc4d917c4e819942caccf22b64a1b1cf45199cdbf58defa0773a8d6a76c0672db2824a724018253efb0db1a0baf0c2f105d07758b471

    • SSDEEP

      12288:9CwgCcyMy1Nncixi2NWXCAcrIQBjljKsFKfFDKZNF:9cCp9KGiAAcUwjljKAK8ZNF

    Score
    10/10
    djvudiscoverypersistenceransomware

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

      ransomwaredjvu

    • Checks computer location settings

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

    • Modifies file permissions

      discovery

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

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

    • Suspicious use of SetThreadContext

    behavioral1behavioral2behavioral3behavioral4

MITRE ATT&CK Enterprise v15

Tasks