Overview

overview

10

Static

static

3

b6fc756485...2e.exe

windows7-x64

10

b6fc756485...2e.exe

windows10-2004-x64

10

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General

  • Target

    b6fc75648562f2e778d1f1fa44a7332e.exe

  • Size

    211KB

  • Sample

    231225-mtncgahee9

  • MD5

    b6fc75648562f2e778d1f1fa44a7332e

  • SHA1

    f47f109d8271d949591c4afdad23f7634b91784f

  • SHA256

    2426a644d4aaad7c69126e655678190b795b77f887c482ef35c8f56ed85d320f

  • SHA512

    32c434e736546534630620ad580de858af75c814c19f7a1a174f37de0fc31e94932382d91548f41b31b3774c5eb47cd19324c41fc20f6f887a82b2c731506c0a

  • SSDEEP

    3072:1HpWFLixLjNpqF+ORuZGA6SQC9VSpeomhCRtDHfo:1KLMLppq+IYGA6SQC9VpsD

Score
10/10
dcratdjvusmokeloaderpub1backdoordiscoveryinfostealerpersistenceransomwarerattrojan

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/
rc4.i32
rc4.i32

Extracted

Family

djvu

C2

http://zexeq.com/test1/get.php

Attributes
  • extension

    .loqw

  • offline_id

    NrqpaQRhQqq5l2tBPp1QS34I3ME2IKsAlZ0A9pt1

  • payload_url

    http://brusuax.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-MhbiRFXgXD 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: 0838ASdw

rsa_pubkey.plain

Targets

    • Target

      b6fc75648562f2e778d1f1fa44a7332e.exe

    • Size

      211KB

    • MD5

      b6fc75648562f2e778d1f1fa44a7332e

    • SHA1

      f47f109d8271d949591c4afdad23f7634b91784f

    • SHA256

      2426a644d4aaad7c69126e655678190b795b77f887c482ef35c8f56ed85d320f

    • SHA512

      32c434e736546534630620ad580de858af75c814c19f7a1a174f37de0fc31e94932382d91548f41b31b3774c5eb47cd19324c41fc20f6f887a82b2c731506c0a

    • SSDEEP

      3072:1HpWFLixLjNpqF+ORuZGA6SQC9VSpeomhCRtDHfo:1KLMLppq+IYGA6SQC9VpsD

    Score
    10/10
    dcratdjvusmokeloaderpub1backdoordiscoveryinfostealerpersistenceransomwarerattrojan

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

      ratinfostealerdcrat

    • Detected Djvu ransomware

    • Djvu Ransomware

      Ransomware which is a variant of the STOP family.

      ransomwaredjvu

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

      trojanbackdoorsmokeloader

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks