General

  • Target

    Temp Spoofer.exe

  • Size

    80KB

  • Sample

    241123-b6qsks1jfp

  • MD5

    b78426b5a12e41584e38e488cc222060

  • SHA1

    8785d4f2d3ed6f230a00ecfbfdba9e41005dbe93

  • SHA256

    1a56f55639b39aff74ad6e5199f0a43e7e286bc50e51cd0f44fc17dc58e44cbb

  • SHA512

    587e00c6a777c19c457691d75ffd91b0cdc0ef675e4027e4307e4e868e2a26652d6037a3867432ce9e50d45c0c4c9615b80704d43676425fd840693d4d9c0c5f

  • SSDEEP

    1536:t9o7JhgQHS6kEl/isGDz006OzhaK62LXlWm5SescQvgjVT2ZHW:/o1uGl/isGX06hhWm5Bscn2

Malware Config

Extracted

Family

lumma

C2

https://fumblingactor.cyou/api

Targets

    • Target

      Temp Spoofer.exe

    • Size

      80KB

    • MD5

      b78426b5a12e41584e38e488cc222060

    • SHA1

      8785d4f2d3ed6f230a00ecfbfdba9e41005dbe93

    • SHA256

      1a56f55639b39aff74ad6e5199f0a43e7e286bc50e51cd0f44fc17dc58e44cbb

    • SHA512

      587e00c6a777c19c457691d75ffd91b0cdc0ef675e4027e4307e4e868e2a26652d6037a3867432ce9e50d45c0c4c9615b80704d43676425fd840693d4d9c0c5f

    • SSDEEP

      1536:t9o7JhgQHS6kEl/isGDz006OzhaK62LXlWm5SescQvgjVT2ZHW:/o1uGl/isGX06hhWm5Bscn2

    • DcRat

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

    • Dcrat family

    • Lumma Stealer, LummaC

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

    • Lumma family

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • 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

    • Stops running service(s)

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks