General

  • Target

    283c845c3ea5f5b3ef68ef0f2ae5892ed8e2541c54612fe58b78f211c3518f88

  • Size

    846KB

  • Sample

    211129-e6cshaeee6

  • MD5

    0050dca1571349690fef7d0f114ec738

  • SHA1

    3cbe24a1635cfe8b308761c09ae02437017da0e5

  • SHA256

    283c845c3ea5f5b3ef68ef0f2ae5892ed8e2541c54612fe58b78f211c3518f88

  • SHA512

    3f5b565c77ab820d76af601721d74b9a077d897be41dbbfc802d4a7e7810937aedda617dae22512ee5b0641cb510613b28f53034f089286737c20d461aa35755

Malware Config

Extracted

Family

djvu

C2

http://tzgl.org/fhsgtsspen6/get.php

Attributes
  • extension

    .rigj

  • offline_id

    Z5GGASEfY71jtxU3i3E8kzvrTJmY9oiZkjcSm0t1

  • payload_url

    http://kotob.top/dl/build2.exe

    http://tzgl.org/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-Tjb0YqckGX 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: manager@mailtemp.ch Reserve e-mail address to contact us: helprestoremanager@airmail.cc Your personal ID: 0353gSd743d

rsa_pubkey.plain

Extracted

Family

vidar

Version

48.7

Botnet

517

C2

https://mstdn.social/@anapa

https://mastodon.social/@mniami

Attributes
  • profile_id

    517

Targets

    • Target

      283c845c3ea5f5b3ef68ef0f2ae5892ed8e2541c54612fe58b78f211c3518f88

    • Size

      846KB

    • MD5

      0050dca1571349690fef7d0f114ec738

    • SHA1

      3cbe24a1635cfe8b308761c09ae02437017da0e5

    • SHA256

      283c845c3ea5f5b3ef68ef0f2ae5892ed8e2541c54612fe58b78f211c3518f88

    • SHA512

      3f5b565c77ab820d76af601721d74b9a077d897be41dbbfc802d4a7e7810937aedda617dae22512ee5b0641cb510613b28f53034f089286737c20d461aa35755

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Vidar 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 Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

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

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Tasks