General

  • Target

    5355e984e5b959824b851696f7050996b76226a4b044a111b1547c5fec37d16c

  • Size

    859KB

  • Sample

    230415-gn14gsdc43

  • MD5

    454dcbf24256c5237e552a4f94b0b5b9

  • SHA1

    ee4c08dc7d6a510183f528a14f99f5ab099b55fb

  • SHA256

    5355e984e5b959824b851696f7050996b76226a4b044a111b1547c5fec37d16c

  • SHA512

    601f0ba9fbd7ef3f770a763b16daf78edb0a8e2d23160fc0dc58f7745452f2acd76b06920e4e15c4f9c918c8cbc6f55e2bf17843c0565ee28bd3d6ea40219083

  • SSDEEP

    24576:OKKQOMjfhVZGeSWj73z5CsvCNeaFfGVXq1aq:OOOafhVZiW79CsvegVXzq

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .boza

  • offline_id

    A5whrmSMRYQPLIwxS6XFix1PGn8lJ9uXUaipSat1

  • payload_url

    http://uaery.top/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-eneUZ5ccES 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: 0689UIuhd

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.4

Botnet

623db25256a5734d1207787d269d05b2

C2

https://steamcommunity.com/profiles/76561199494593681

https://t.me/auftriebs

Attributes
  • profile_id_v2

    623db25256a5734d1207787d269d05b2

  • user_agent

    Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:105.0) Gecko/20100101 Firefox/105.0

Targets

    • Target

      5355e984e5b959824b851696f7050996b76226a4b044a111b1547c5fec37d16c

    • Size

      859KB

    • MD5

      454dcbf24256c5237e552a4f94b0b5b9

    • SHA1

      ee4c08dc7d6a510183f528a14f99f5ab099b55fb

    • SHA256

      5355e984e5b959824b851696f7050996b76226a4b044a111b1547c5fec37d16c

    • SHA512

      601f0ba9fbd7ef3f770a763b16daf78edb0a8e2d23160fc0dc58f7745452f2acd76b06920e4e15c4f9c918c8cbc6f55e2bf17843c0565ee28bd3d6ea40219083

    • SSDEEP

      24576:OKKQOMjfhVZGeSWj73z5CsvCNeaFfGVXq1aq:OOOafhVZiW79CsvegVXzq

    • 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

    • Checks computer location settings

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

    • Executes dropped EXE

    • 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