General

  • Target

    371640bdae10bc105c17682b23136a9cfa00b1e281417b7480153f56f2ddbd33

  • Size

    752KB

  • Sample

    230402-1afp6sca9v

  • MD5

    98afcd997d59584516e6f18a35769f22

  • SHA1

    dbbfd24a5d71bd8c0773dae4c4f9881b47a5d2b6

  • SHA256

    371640bdae10bc105c17682b23136a9cfa00b1e281417b7480153f56f2ddbd33

  • SHA512

    8a90fc7a75b8ff806fb443b4f931fe9e917017cdc6af8a870a8573dba999b4eb30b5d29a052a9fbe0219eed8bf4ee4d0f6d1b6000f3470754aadadf2e98f1c97

  • SSDEEP

    12288:+l6U4s3yZn5gb55D3ZEhk/CDwsVQC1oh5fv0HmcTBXCXPHGdkMGsKUJdgLGt:84suCDDGhMtsVQvh5fsHxTBXOGdkdLGt

Malware Config

Extracted

Family

djvu

C2

http://zexeq.com/test2/get.php

Attributes
  • extension

    .nifr

  • 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: 0679SUjhw

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

      371640bdae10bc105c17682b23136a9cfa00b1e281417b7480153f56f2ddbd33

    • Size

      752KB

    • MD5

      98afcd997d59584516e6f18a35769f22

    • SHA1

      dbbfd24a5d71bd8c0773dae4c4f9881b47a5d2b6

    • SHA256

      371640bdae10bc105c17682b23136a9cfa00b1e281417b7480153f56f2ddbd33

    • SHA512

      8a90fc7a75b8ff806fb443b4f931fe9e917017cdc6af8a870a8573dba999b4eb30b5d29a052a9fbe0219eed8bf4ee4d0f6d1b6000f3470754aadadf2e98f1c97

    • SSDEEP

      12288:+l6U4s3yZn5gb55D3ZEhk/CDwsVQC1oh5fv0HmcTBXCXPHGdkMGsKUJdgLGt:84suCDDGhMtsVQvh5fsHxTBXOGdkdLGt

    • 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