General

  • Target

    2d2fa55164035240b55918b19d6e108c50d5986f0bf6a360a3564c0a827ce534

  • Size

    791KB

  • Sample

    221005-x3g7xsfcg8

  • MD5

    12615d5fba43900693a25d4263f8b871

  • SHA1

    ebe2079fcd8b975a4cd47e795668d4d539f1e6c5

  • SHA256

    2d2fa55164035240b55918b19d6e108c50d5986f0bf6a360a3564c0a827ce534

  • SHA512

    690156e7373cb12633d2f69a1abe5f550a5db6b7ae4413345798dbd9f885e6a051bf646e18dbbfa7627aca197f2c944d1425915110cc7ed31b3fb8e485173923

  • SSDEEP

    24576:DjBauUglvoBnFl/UJUjgq4fX7yBP2XfYSdNKUFoRyUIk:DRVoBviy1sfYKKmzk

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .adlg

  • offline_id

    z8lhl4oForVEc7gy9Ra8rSqjYMl3xiFRuIW4not1

  • payload_url

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

    http://winnlinne.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-g28rVcqA58 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: 0570Jhyjd

rsa_pubkey.plain

Extracted

Family

vidar

Version

54.9

Botnet

517

C2

https://t.me/larsenup

https://ioc.exchange/@zebra54

Attributes
  • profile_id

    517

Targets

    • Target

      2d2fa55164035240b55918b19d6e108c50d5986f0bf6a360a3564c0a827ce534

    • Size

      791KB

    • MD5

      12615d5fba43900693a25d4263f8b871

    • SHA1

      ebe2079fcd8b975a4cd47e795668d4d539f1e6c5

    • SHA256

      2d2fa55164035240b55918b19d6e108c50d5986f0bf6a360a3564c0a827ce534

    • SHA512

      690156e7373cb12633d2f69a1abe5f550a5db6b7ae4413345798dbd9f885e6a051bf646e18dbbfa7627aca197f2c944d1425915110cc7ed31b3fb8e485173923

    • SSDEEP

      24576:DjBauUglvoBnFl/UJUjgq4fX7yBP2XfYSdNKUFoRyUIk:DRVoBviy1sfYKKmzk

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • 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

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks installed software on the system

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

    • 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

MITRE ATT&CK Matrix ATT&CK v6

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

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

3
T1005

Tasks