General

  • Target

    629b58e6cbb37b826aa7b8c35664c14f.bin

  • Size

    652KB

  • Sample

    230331-btymnahe31

  • MD5

    619f89a29b7c64712a979ecfe0258eff

  • SHA1

    297f570639e407add5d8fcbfabf5d39eae3989b8

  • SHA256

    55ccf5883573a0d6fd6a293d6f167d46c0c85b7777f9f146f8e92c0c94144bde

  • SHA512

    51fee7f27629c1f5cbf45268b844764db5a3f6fd4f119937efb2c9cabe395ffb2d9c70cea6adefcb35b5dc87a73da89e0365a05d306631fc853ad25ca09e3d7c

  • SSDEEP

    12288:N7iznM5Ne9hdLfxzZ7DfBHWBpC+Jv3f4Mn6jNXDHi2eafOTRh1J6IA:N7itLfxFTB0RFv4sEhHi2ZO9hyx

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .jywd

  • offline_id

    MEMHlobHgXqvmTWaMsLcwGZhDOd00bblO1yevst1

  • 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-fkW8qLaCVQ 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: 0675JOsie

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

      7e5dd9a0f29589c8ae9a99708f893e6b16d4a82875007d54424ba9ed13341027.exe

    • Size

      735KB

    • MD5

      629b58e6cbb37b826aa7b8c35664c14f

    • SHA1

      eed08ddcd5a8693979a27f5965c0969e7e991d91

    • SHA256

      7e5dd9a0f29589c8ae9a99708f893e6b16d4a82875007d54424ba9ed13341027

    • SHA512

      8863cff33832aa9fbef6060e77b7e57f5503764a03417933862b531607d8cd44a2564c68668e76d7f60a78b76f0492e3d528e844fbcb537b3120df50a64ab142

    • SSDEEP

      12288:BOmliFRpOEzjxXXKHn6Bn2MPXL6qtqdvoles2MSr7w3UJ3+oKwyyhi5is1pnrfm:B81OOFXKHVMfL6qsPzMeCUJ3VKwyyhiv

    • 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

2
T1112

Install Root Certificate

1
T1130

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