Resubmissions

08-10-2023 20:25

231008-y69l1sfh3s 10

General

  • Target

    file.exe

  • Size

    786KB

  • Sample

    231008-y69l1sfh3s

  • MD5

    f49c53a4db7c7a6e0ef1e9243cde5ea5

  • SHA1

    86e2388514f7f4c2a7acd09c03325b0ed690ef83

  • SHA256

    cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07

  • SHA512

    8bd94a77fcbccbd25d6dcdbad6cf1aefc5e5cefdf3f73f4f7bda2d68147e0a87a877968067528c2bb3cfb95c3ffd668620547fb87a8691ed534bfc24a74b0226

  • SSDEEP

    12288:TOZ8mfnnY5jT3ncoNw7JePBRZ20CohvlPMWaRUyunKH6bkhT0J:4pY5jwo0JGBRZlNNGtuKHEwT0

Malware Config

Extracted

Family

djvu

C2

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

Attributes
  • extension

    .mlza

  • offline_id

    FjtJkuhRHnUARRt9GnbbgUTa6ErhJq4ZM668xSt1

  • 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-xN3VuzQl0a 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: 0803JOsie

rsa_pubkey.plain

Extracted

Family

vidar

Version

5.9

Botnet

b4fc4cd2d76417bf461814b9d989fcdb

C2

https://steamcommunity.com/profiles/76561199557479327

https://t.me/grizmons

Attributes
  • profile_id_v2

    b4fc4cd2d76417bf461814b9d989fcdb

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36 OPR/104.0.0.0

Targets

    • Target

      file.exe

    • Size

      786KB

    • MD5

      f49c53a4db7c7a6e0ef1e9243cde5ea5

    • SHA1

      86e2388514f7f4c2a7acd09c03325b0ed690ef83

    • SHA256

      cd1e5d43202f27d75d48c1d6963ef572eb3321e1ca3d6510c6a999598db09a07

    • SHA512

      8bd94a77fcbccbd25d6dcdbad6cf1aefc5e5cefdf3f73f4f7bda2d68147e0a87a877968067528c2bb3cfb95c3ffd668620547fb87a8691ed534bfc24a74b0226

    • SSDEEP

      12288:TOZ8mfnnY5jT3ncoNw7JePBRZ20CohvlPMWaRUyunKH6bkhT0J:4pY5jwo0JGBRZlNNGtuKHEwT0

    • 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

    • 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

2
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

2
T1005

Tasks