General

  • Target

    bb633d7fb28cf6aac4097726c639462bd7a4362d7752ba5c612ea6c0e18e8d11.exe

  • Size

    163KB

  • Sample

    240227-f96enaaa6v

  • MD5

    6e1183fe6e9e67f10a9c88f1f744d6e0

  • SHA1

    a44aa17fd0c4615eadf796a374ca6cc291736c2e

  • SHA256

    bb633d7fb28cf6aac4097726c639462bd7a4362d7752ba5c612ea6c0e18e8d11

  • SHA512

    5705a4c6b7c975254691b2871296f0d9cfd44d870d548dfd483df95494890b1110073fc944aca31e82ab9bde3d81c65fad5baa67a5be8e8c83a94d4e00576430

  • SSDEEP

    3072:Ai3vfdGdDEaNfQqBJ/dZSURGhL/2UeD8XXRlR:AslGdQaV5f/6FI8Rf

Malware Config

Extracted

Family

smokeloader

Version

2022

C2

http://selebration17io.io/index.php

http://vacantion18ffeu.cc/index.php

http://valarioulinity1.net/index.php

http://buriatiarutuhuob.net/index.php

http://cassiosssionunu.me/index.php

http://sulugilioiu19.net/index.php

http://goodfooggooftool.net/index.php

http://kamsmad.com/tmp/index.php

http://souzhensil.ru/tmp/index.php

http://teplokub.com.ua/tmp/index.php

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

lumma

C2

https://resergvearyinitiani.shop/api

https://technologyenterdo.shop/api

https://detectordiscusser.shop/api

https://turkeyunlikelyofw.shop/api

https://associationokeo.shop/api

Targets

    • Target

      bb633d7fb28cf6aac4097726c639462bd7a4362d7752ba5c612ea6c0e18e8d11.exe

    • Size

      163KB

    • MD5

      6e1183fe6e9e67f10a9c88f1f744d6e0

    • SHA1

      a44aa17fd0c4615eadf796a374ca6cc291736c2e

    • SHA256

      bb633d7fb28cf6aac4097726c639462bd7a4362d7752ba5c612ea6c0e18e8d11

    • SHA512

      5705a4c6b7c975254691b2871296f0d9cfd44d870d548dfd483df95494890b1110073fc944aca31e82ab9bde3d81c65fad5baa67a5be8e8c83a94d4e00576430

    • SSDEEP

      3072:Ai3vfdGdDEaNfQqBJ/dZSURGhL/2UeD8XXRlR:AslGdQaV5f/6FI8Rf

    • DcRat

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

    • Glupteba

      Glupteba is a modular loader written in Golang with various components.

    • Glupteba payload

    • Lumma Stealer

      An infostealer written in C++ first seen in August 2022.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Detect binaries embedding considerable number of MFA browser extension IDs.

    • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

    • Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003)

    • Detects Windows executables referencing non-Windows User-Agents

    • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

    • Detects executables Discord URL observed in first stage droppers

    • Detects executables containing URLs to raw contents of a Github gist

    • Detects executables containing artifacts associated with disabling Widnows Defender

    • Detects executables packed with VMProtect.

    • Detects executables referencing many varying, potentially fake Windows User-Agents

    • UPX dump on OEP (original entry point)

    • Creates new service(s)

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Stops running service(s)

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • 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.

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks