General

  • Target

    0008988cd303adfa7bec7e1c757386bb4039dd52f04961d90a4b63140b36dc0d

  • Size

    271KB

  • Sample

    221005-zaxs1sfed6

  • MD5

    a1a707c217336e4ae154a23f36f3608d

  • SHA1

    23e83155a5741a21cfae3f635ba964f308b2da8e

  • SHA256

    0008988cd303adfa7bec7e1c757386bb4039dd52f04961d90a4b63140b36dc0d

  • SHA512

    2e44c2344fbc9ed9d2c705386dd9ea077e18da0d1f94981055cd47722b0b9513465f45f0684b5e241e1375b611c14730933be41dc76d526d1a1962a6969a6448

  • SSDEEP

    6144:ulxGTLpJGTykiRmrrr84f3+9HEIc9Ruzbgwun/WfU+7wVfUU:uGNJGQRgrtf3+FEDHunno+fRBU

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .adww

  • 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: 0573Jhyjd

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

      0008988cd303adfa7bec7e1c757386bb4039dd52f04961d90a4b63140b36dc0d

    • Size

      271KB

    • MD5

      a1a707c217336e4ae154a23f36f3608d

    • SHA1

      23e83155a5741a21cfae3f635ba964f308b2da8e

    • SHA256

      0008988cd303adfa7bec7e1c757386bb4039dd52f04961d90a4b63140b36dc0d

    • SHA512

      2e44c2344fbc9ed9d2c705386dd9ea077e18da0d1f94981055cd47722b0b9513465f45f0684b5e241e1375b611c14730933be41dc76d526d1a1962a6969a6448

    • SSDEEP

      6144:ulxGTLpJGTykiRmrrr84f3+9HEIc9Ruzbgwun/WfU+7wVfUU:uGNJGQRgrtf3+FEDHunno+fRBU

    • 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

    • Deletes itself

    • 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 Microsoft Outlook profiles

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

    • 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

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Command and Control

Web Service

1
T1102

Tasks