Overview

overview

10

Static

static

3

sample.exe

windows7-x64

10

sample.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    2b31b3a43d6cf9f80d7b46f77dc3935ecdd7caeade5daebe1438417060fa60a0

  • Size

    649KB

  • Sample

    241221-tv21kssreq

  • MD5

    a0e630176fabf75d7da21430a46787ce

  • SHA1

    f2a7df81956629ced870f2b9347348d41cffb1ca

  • SHA256

    2b31b3a43d6cf9f80d7b46f77dc3935ecdd7caeade5daebe1438417060fa60a0

  • SHA512

    83fcee883a6b9ee94ac9211cf2c7c7e6ab6d80e1b57e17ce09f99694981954d05bf4e2c94b720a14763a89517ce1c67d16c39e64de2a0db70f14773971903683

  • SSDEEP

    12288:6sisCPErUNgRwfsJ1T8k+l9S/RYd8HTNsB+cl5+oe/nA/9qErZjBLd/C:6ssxNewKgSJsIO5+oDqErZjdBC

Score
10/10
djvudiscoverypersistenceransomware

Malware Config

Extracted

Family

djvu

C2

http://fuyt.org/fhsgtsspen6/get.php

Attributes
  • extension

    .uyjh

  • offline_id

    LgcOIftV0dQfFBQStVNfb8BhHy8tHRPvXwSiFwt1

  • payload_url

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

    http://fuyt.org/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-FglTTmgzZT 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: 0443tOjkfd

rsa_pubkey.plain

Targets

    • Target

      sample

    • Size

      775KB

    • MD5

      b318b2664abf0d93433255643aaae35c

    • SHA1

      9f8748a0459a6cef1a67c3b44c21f3eaa8e360f0

    • SHA256

      4fbf13052ed4c7f12cda197e43998550d4b698d53ca08616929dbded612726c2

    • SHA512

      f6dffa75f2caf6a57130e911461626adefa5301ef02ad00f9d606c155c983971c9b49e6905ed063c3becaf331aad2d694a68a7302316a33937c8f75592ff869f

    • SSDEEP

      12288:uqyWSUBQv0EroDgRgp4LPTskElzS9zad8HT/AB+c9X+oeJzYf94SRZj1LJ+H:uqNQv0XDegs2SpSI0X+oB4SRZjxgH

    Score
    10/10
    djvudiscoverypersistenceransomware

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

      ransomwaredjvu

    • Djvu family

      djvu

    • 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

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks