General

  • Target

    f61c7a68abc90c6b4fbc29857e227db31d45bd55bb417701e231dbd063ec58e3

  • Size

    729KB

  • Sample

    221011-a5gmvafhd4

  • MD5

    b8a8920dc03acd9e940af085b71f32be

  • SHA1

    27a763cc4346db191fc11550dc1dca3e47778088

  • SHA256

    f61c7a68abc90c6b4fbc29857e227db31d45bd55bb417701e231dbd063ec58e3

  • SHA512

    7a010266378ee686cb6f43401d45b090cfa00e1ca72583682f97b11835619cc6f9c18603adb3a8dd78b2b9c3f64c9d73efde16939c2c59dd4cf4cf347568a5de

  • SSDEEP

    12288:MAjf0xkIWbePWFRa8f3+mmsIskRrxQbkZm8eJaLooG8XjKSNAZHr:MW2GU8f+mGRrA8eJaLnX+1

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .tohj

  • offline_id

    SSHsHMHGmSIhrz50VnIxLJJX15osxEQY6iXedXt1

  • 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-Kbx8mJatqN 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: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0574Jhyjd

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

      f61c7a68abc90c6b4fbc29857e227db31d45bd55bb417701e231dbd063ec58e3

    • Size

      729KB

    • MD5

      b8a8920dc03acd9e940af085b71f32be

    • SHA1

      27a763cc4346db191fc11550dc1dca3e47778088

    • SHA256

      f61c7a68abc90c6b4fbc29857e227db31d45bd55bb417701e231dbd063ec58e3

    • SHA512

      7a010266378ee686cb6f43401d45b090cfa00e1ca72583682f97b11835619cc6f9c18603adb3a8dd78b2b9c3f64c9d73efde16939c2c59dd4cf4cf347568a5de

    • SSDEEP

      12288:MAjf0xkIWbePWFRa8f3+mmsIskRrxQbkZm8eJaLooG8XjKSNAZHr:MW2GU8f+mGRrA8eJaLnX+1

    • 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

    • 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 Enterprise v6

Tasks