Overview

overview

10

Static

static

3

file.exe

windows7-x64

10

file.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    file.exe

  • Size

    750KB

  • Sample

    230607-byh3rsgd33

  • MD5

    03483bad9b960538fe39ff5aab1a907a

  • SHA1

    444d08535d4d700a4259f27a056275d5b0a4610d

  • SHA256

    c041c2a6e4803095086cc704bb84f9c7b377c6c4720bc45f76fc93fb53beb1fd

  • SHA512

    91474555982ac716f407367b5f91e3544a1a877c1f436c1fbeeb24e1fbb5d822588b9d2da767d0179a180313469051cb8cd8169c9df44a0645084cffdc6a2774

  • SSDEEP

    12288:T5fbu5mbzSITzDOR3TgKOl1XHcaeS+lQS4qEuqLMUmLjpLfP+b0:T5fdnSWOXcHBeS+W/qEdMUmRL3+

Score
10/10
djvudiscoverypersistenceransomware

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test1/get.php

Attributes
  • extension

    .nerz

  • offline_id

    0vTA6MA1m5nzrdffOCJC7YmAa4Lp6YNN8lOJ4mt1

  • payload_url

    http://colisumy.com/dl/build2.exe

    http://zexeq.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-vc50LyB2yb 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: support@freshmail.top Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0722JOsie

rsa_pubkey.plain

Targets

    • Target

      file.exe

    • Size

      750KB

    • MD5

      03483bad9b960538fe39ff5aab1a907a

    • SHA1

      444d08535d4d700a4259f27a056275d5b0a4610d

    • SHA256

      c041c2a6e4803095086cc704bb84f9c7b377c6c4720bc45f76fc93fb53beb1fd

    • SHA512

      91474555982ac716f407367b5f91e3544a1a877c1f436c1fbeeb24e1fbb5d822588b9d2da767d0179a180313469051cb8cd8169c9df44a0645084cffdc6a2774

    • SSDEEP

      12288:T5fbu5mbzSITzDOR3TgKOl1XHcaeS+lQS4qEuqLMUmLjpLfP+b0:T5fdnSWOXcHBeS+W/qEdMUmRL3+

    Score
    10/10
    djvudiscoverypersistenceransomware

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

      ransomwaredjvu

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • 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 Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks