General

  • Target

    file.exe

  • Size

    1.7MB

  • Sample

    241208-t8sztsyrcx

  • MD5

    da3e48a074978cf8a3eeaa8e523a1b35

  • SHA1

    959463b589892d5aad9ce625ce81b2339dbe8b22

  • SHA256

    b0759e11c119210c0c58de1f33b83e5aa09b7db04769ef3252287f09fa5b83d1

  • SHA512

    8605149816281fd07bf933274fdefb9e91ff8621091a27452348d663cf7e40b8855748ab0ad5ff592be60ec770ea941476be98a760a22d6d149055908338f584

  • SSDEEP

    49152:sFq/n9VHqEz3vx7AbXFhwojv0DjHbyXId+:sQVVHR8Iojv0nHuu

Malware Config

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

quasar

Version

1.4.1

Botnet

vuictim

C2

91.214.78.16:7000

Mutex

42d886c4-74fa-480d-8b7e-5fe1ac03ba03

Attributes
  • encryption_key

    D72F5D077DE4AC156A670D7D920C697F5FB66FA8

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Microsoft edge

  • subdirectory

    SubDir

Extracted

Family

lumma

C2

https://impend-differ.biz/api

https://print-vexer.biz/api

https://dare-curbys.biz/api

https://covery-mover.biz/api

https://formy-spill.biz/api

https://dwell-exclaim.biz/api

https://zinc-sneark.biz/api

https://se-blurry.biz/api

https://atten-supporse.biz/api

Extracted

Family

quasar

Version

1.4.1

Botnet

ewiop

C2

91.214.78.16:4900

Mutex

42d886c4-74fa-480d-8b7e-5fe1ac03ba03

Attributes
  • encryption_key

    D72F5D077DE4AC156A670D7D920C697F5FB66FA8

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Microsoft edge

  • subdirectory

    SubDir

Extracted

Family

lumma

C2

https://atten-supporse.biz/api

https://se-blurry.biz/api

https://zinc-sneark.biz/api

Targets

    • Target

      file.exe

    • Size

      1.7MB

    • MD5

      da3e48a074978cf8a3eeaa8e523a1b35

    • SHA1

      959463b589892d5aad9ce625ce81b2339dbe8b22

    • SHA256

      b0759e11c119210c0c58de1f33b83e5aa09b7db04769ef3252287f09fa5b83d1

    • SHA512

      8605149816281fd07bf933274fdefb9e91ff8621091a27452348d663cf7e40b8855748ab0ad5ff592be60ec770ea941476be98a760a22d6d149055908338f584

    • SSDEEP

      49152:sFq/n9VHqEz3vx7AbXFhwojv0DjHbyXId+:sQVVHR8Iojv0nHuu

    • Amadey

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

    • Amadey family

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Asyncrat 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

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Stealc

      Stealc is an infostealer written in C++.

    • Stealc family

    • StormKitty

      StormKitty is an open source info stealer written in C#.

    • StormKitty payload

    • Stormkitty family

    • Suspicious use of NtCreateUserProcessOtherParentProcess

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

    • 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.

    • Checks computer location settings

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

    • 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 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