General

  • Target

    cedd75f3a781795bab964212a7e781e1.exe

  • Size

    1.8MB

  • Sample

    241218-ym477azlat

  • MD5

    cedd75f3a781795bab964212a7e781e1

  • SHA1

    450c262b1814c36b51cdb5868d96d02d5bbb60eb

  • SHA256

    3a7fac7bd67e9b5e65ba91e95a49df1ca38d64be20f24342efb7cd29e22b4aec

  • SHA512

    d45ed595aec66e0bd88d9b533d943a207bbe76ee4922aa50e05ba4d101ec624348f858feb0aff4a957a5d5085bc8f72c2ff98d1950f3e783f35e64c6686154fc

  • SSDEEP

    24576:I2Itn71MxiC2DB4o+0l6vGuAJcWEN0m2tXw9wRFAXsc+c0AV9R0M+BH657UqShRg:KLh4k6OuA2NNNB2PiF0j0nMRfF

Malware Config

Extracted

Family

lumma

Extracted

Family

stealc

Botnet

stok

C2

http://185.215.113.206

Attributes
  • url_path

    /c4becf79229cb002.php

Extracted

Family

amadey

Version

4.42

Botnet

9c9aa5

C2

http://185.215.113.43

Attributes
  • install_dir

    abc3bc1985

  • install_file

    skotes.exe

  • strings_key

    8a35cf2ea38c2817dba29a4b5b25dcf0

  • url_paths

    /Zu7JuNko/index.php

rc4.plain

Extracted

Family

amadey

Version

4.41

Botnet

fed3aa

C2

http://185.215.113.16

Attributes
  • install_dir

    44111dbc49

  • install_file

    axplong.exe

  • strings_key

    8d0ad6945b1a30a186ec2d30be6db0b5

  • url_paths

    /Jo89Ku7d/index.php

rc4.plain

Extracted

Family

cryptbot

Targets

    • Target

      cedd75f3a781795bab964212a7e781e1.exe

    • Size

      1.8MB

    • MD5

      cedd75f3a781795bab964212a7e781e1

    • SHA1

      450c262b1814c36b51cdb5868d96d02d5bbb60eb

    • SHA256

      3a7fac7bd67e9b5e65ba91e95a49df1ca38d64be20f24342efb7cd29e22b4aec

    • SHA512

      d45ed595aec66e0bd88d9b533d943a207bbe76ee4922aa50e05ba4d101ec624348f858feb0aff4a957a5d5085bc8f72c2ff98d1950f3e783f35e64c6686154fc

    • SSDEEP

      24576:I2Itn71MxiC2DB4o+0l6vGuAJcWEN0m2tXw9wRFAXsc+c0AV9R0M+BH657UqShRg:KLh4k6OuA2NNNB2PiF0j0nMRfF

    • Amadey

      Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

    • Amadey family

    • CryptBot

      CryptBot is a C++ stealer distributed widely in bundle with other software.

    • Cryptbot family

    • Lumma Stealer, LummaC

      Lumma or LummaC is an infostealer written in C++ first seen in August 2022.

    • Lumma family

    • Modifies Windows Defender Real-time Protection settings

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Enumerates VirtualBox registry keys

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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Downloads MZ/PE file

    • Uses browser remote debugging

      Can be used control the browser and steal sensitive information such as credentials and session cookies.

    • Checks BIOS information in registry

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

    • 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 data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Windows security modification

    • 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.

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks