General

  • Target

    setup.exe

  • Size

    760.0MB

  • Sample

    240324-nqzf1acd25

  • MD5

    4aafa8e5e74edf69a426b37d68cb2255

  • SHA1

    e77432c9e21d148ead003130de0a385b9a9d25ab

  • SHA256

    7f5f18f240f7d32454db2b7284802e752583c22542ee1f07b442600bec1bd860

  • SHA512

    91202e5c2f0924ba294b1529c173b56ee7d69b1c52d61294b2df122007327e7880b06da7ca0df596986564c4438f7338c1d603adb1a735f16a11a3154377d36b

  • SSDEEP

    98304:8FpgkuFOy+MMRHGV7EImTNrKPp4PM3nmm0Kl:8ckBhGV7EImhypxXKKl

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.210

Attributes
  • url_path

    /f993692117a3fda2.php

Extracted

Family

vidar

Version

8.4

Botnet

473851422af56ec6b6c329e5cb4d622d

C2

https://steamcommunity.com/profiles/76561199654112719

https://t.me/r2d0s

Attributes
  • profile_id_v2

    473851422af56ec6b6c329e5cb4d622d

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:123.0) Gecko/20100101 Firefox/123.0

Extracted

Family

smokeloader

Botnet

pub3

Extracted

Family

smokeloader

Version

2022

C2

http://nidoe.org/tmp/index.php

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

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

http://talesofpirates.net/tmp/index.php

rc4.i32
rc4.i32

Extracted

Family

vidar

Version

8.4

Botnet

4cf8d799a3641f9821e54be56c960e28

C2

https://steamcommunity.com/profiles/76561199654112719

https://t.me/r2d0s

Attributes
  • profile_id_v2

    4cf8d799a3641f9821e54be56c960e28

  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:123.0) Gecko/20100101 Firefox/123.0

Extracted

Family

socks5systemz

C2

http://bozuuii.com/search/?q=67e28dd83d0ef479150af9197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4be8889b5e4fa9281ae978a571ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c8ef929c3f

Targets

    • Target

      setup.exe

    • Size

      760.0MB

    • MD5

      4aafa8e5e74edf69a426b37d68cb2255

    • SHA1

      e77432c9e21d148ead003130de0a385b9a9d25ab

    • SHA256

      7f5f18f240f7d32454db2b7284802e752583c22542ee1f07b442600bec1bd860

    • SHA512

      91202e5c2f0924ba294b1529c173b56ee7d69b1c52d61294b2df122007327e7880b06da7ca0df596986564c4438f7338c1d603adb1a735f16a11a3154377d36b

    • SSDEEP

      98304:8FpgkuFOy+MMRHGV7EImTNrKPp4PM3nmm0Kl:8ckBhGV7EImhypxXKKl

    • DcRat

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

    • Detect Vidar Stealer

    • Glupteba

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

    • Glupteba payload

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • RisePro

      RisePro stealer is an infostealer distributed by PrivateLoader.

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Socks5Systemz

      Socks5Systemz is a botnet written in C++.

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Blocklisted process makes network request

    • Creates new service(s)

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Stops running service(s)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads local data of messenger clients

      Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Accesses Microsoft Outlook profiles

    • 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.

    • Checks whether UAC is enabled

    • Drops Chrome extension

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Manipulates WinMonFS driver.

      Roottkits write to WinMonFS to hide directories/files from being detected.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks