Resubmissions

31-03-2023 21:08

230331-zyxg6aeg51 10

31-03-2023 20:48

230331-zlqh3sef71 10

General

  • Target

    5f72a701e7a8b3d5c99bd936a7e80aa38c9d4fcbb2525e197f28a7b85c02cc80

  • Size

    758KB

  • Sample

    230331-zlqh3sef71

  • MD5

    0e81d0b89d8f5b8f20fd254c243de0fd

  • SHA1

    0f19559e02bd874b4dbc23606f2d41bf727e5ac4

  • SHA256

    5f72a701e7a8b3d5c99bd936a7e80aa38c9d4fcbb2525e197f28a7b85c02cc80

  • SHA512

    43cfea265a468b2fb520514d07eca9828db4e8ce7a91213c9821a86d16c04552f1a9c76c9ecdc573b8b240c31c60b0afbaf5346600a5b8461770aca5a71c5fd7

  • SSDEEP

    12288:wggx5SLFdhqP7nB/v4EQOJheGYWsruXk2I70VGWoKT+x4+eGyTf:wg8gstn4EqGuckB4VGWJTa4+mTf

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .niwm

  • offline_id

    FCP2fiITr4rryFhFBnA59GMgwES5CunmcbPc76t1

  • 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-v8HcfXTy5x 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: 0681SUjhw

rsa_pubkey.plain

Extracted

Family

vidar

Version

3.2

Botnet

5df88deb5dde677ba658b77ad5f60248

C2

https://steamcommunity.com/profiles/76561199489580435

https://t.me/tabootalks

Attributes
  • profile_id_v2

    5df88deb5dde677ba658b77ad5f60248

  • user_agent

    Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 OPR/91.0.4516.79

Targets

    • Target

      5f72a701e7a8b3d5c99bd936a7e80aa38c9d4fcbb2525e197f28a7b85c02cc80

    • Size

      758KB

    • MD5

      0e81d0b89d8f5b8f20fd254c243de0fd

    • SHA1

      0f19559e02bd874b4dbc23606f2d41bf727e5ac4

    • SHA256

      5f72a701e7a8b3d5c99bd936a7e80aa38c9d4fcbb2525e197f28a7b85c02cc80

    • SHA512

      43cfea265a468b2fb520514d07eca9828db4e8ce7a91213c9821a86d16c04552f1a9c76c9ecdc573b8b240c31c60b0afbaf5346600a5b8461770aca5a71c5fd7

    • SSDEEP

      12288:wggx5SLFdhqP7nB/v4EQOJheGYWsruXk2I70VGWoKT+x4+eGyTf:wg8gstn4EqGuckB4VGWJTa4+mTf

    • 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 Enterprise v6

Tasks