General

  • Target

    27dbdd58b2fb62be188502907f857441c5f83144d2fdca9f97f07077bd58d9cf

  • Size

    802KB

  • Sample

    230922-b3f4zadf89

  • MD5

    49961b67639e955315e9bc4228e99f5b

  • SHA1

    6e241fc8abbde722a1c5e345f68cf72141c8244e

  • SHA256

    27dbdd58b2fb62be188502907f857441c5f83144d2fdca9f97f07077bd58d9cf

  • SHA512

    d74d8130e09890fbaf5234bbd3c147d99d28a129df8305d92ad9267813b95fa3d5c1060c0a5f209e08ff9fc77197f3e073764898ec90b854e21b49671a3b456b

  • SSDEEP

    12288:BE9oHxV1KvKla4VhDeXI5rEdqtBAWdf4lo6cMihDADqRoLxiU8:GWLcv6aXIrEWqoBsDaoEU8

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .wwza

  • offline_id

    LtYnlJvK0hICyOCeum6Tv4pbia9jcIGHVgA3Xht1

  • payload_url

    http://colisumy.com/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-xoUXGr6cqT 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: 0789JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

5.7

Botnet

5c0b4a12d6c03dd98ed431d3eded2169

C2

https://steamcommunity.com/profiles/76561199553369541

https://t.me/dastanatg

Attributes
  • profile_id_v2

    5c0b4a12d6c03dd98ed431d3eded2169

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_8) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.7 Safari/605.1.75

Targets

    • Target

      27dbdd58b2fb62be188502907f857441c5f83144d2fdca9f97f07077bd58d9cf

    • Size

      802KB

    • MD5

      49961b67639e955315e9bc4228e99f5b

    • SHA1

      6e241fc8abbde722a1c5e345f68cf72141c8244e

    • SHA256

      27dbdd58b2fb62be188502907f857441c5f83144d2fdca9f97f07077bd58d9cf

    • SHA512

      d74d8130e09890fbaf5234bbd3c147d99d28a129df8305d92ad9267813b95fa3d5c1060c0a5f209e08ff9fc77197f3e073764898ec90b854e21b49671a3b456b

    • SSDEEP

      12288:BE9oHxV1KvKla4VhDeXI5rEdqtBAWdf4lo6cMihDADqRoLxiU8:GWLcv6aXIrEWqoBsDaoEU8

    • 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

    • 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 v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

File and Directory Permissions Modification

1
T1222

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Tasks