Overview

overview

10

Static

static

28fb096cbc...4f.exe

windows7-x64

10

28fb096cbc...4f.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    28fb096cbce32cf1f87719254452014f.exe

  • Size

    730KB

  • Sample

    220805-k5la5saddk

  • MD5

    28fb096cbce32cf1f87719254452014f

  • SHA1

    50ceaddc379e1376a579e4c9d4465fd3c734c277

  • SHA256

    1918cc07f0b41a9e9dc18e715e5862a68ca49d61fdad7d76126953629c05be98

  • SHA512

    eb5468f817ca4dee892eb200e920796e175298667fc86f934912c6bd304aa54d39ad4535fa12bdd0c803ac7ee164281372dc364ad97542585209fa39447b5a9f

Score
10/10
djvudiscoverypersistenceransomwarespywarestealer

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/test2/get.php

Attributes
  • extension

    .vvyu

  • offline_id

    rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1

  • payload_url

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

    http://acacaca.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-QsoSRIeAK6 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@bestyourmail.ch Reserve e-mail address to contact us: datarestorehelp@airmail.cc Your personal ID: 0531Jhyjd

rsa_pubkey.plain

Targets

    • Target

      28fb096cbce32cf1f87719254452014f.exe

    • Size

      730KB

    • MD5

      28fb096cbce32cf1f87719254452014f

    • SHA1

      50ceaddc379e1376a579e4c9d4465fd3c734c277

    • SHA256

      1918cc07f0b41a9e9dc18e715e5862a68ca49d61fdad7d76126953629c05be98

    • SHA512

      eb5468f817ca4dee892eb200e920796e175298667fc86f934912c6bd304aa54d39ad4535fa12bdd0c803ac7ee164281372dc364ad97542585209fa39447b5a9f

    Score
    10/10
    djvudiscoverypersistenceransomwarespywarestealer

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

      ransomwaredjvu

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Accesses 2FA software files, possible credential harvesting

      spywarestealer

    • Accesses cryptocurrency files/wallets, possible credential harvesting

      spyware

    • Adds Run key to start application

      persistence

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

      discovery

    • 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

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

File Permissions Modification

1
T1222

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Data from Local System

3
T1005

Exfiltration

Command and Control

Impact

Tasks