General

  • Target

    81cfbdcd567c50d28a6380910dd6cf83.exe

  • Size

    1.7MB

  • Sample

    241219-h54rdavjft

  • MD5

    81cfbdcd567c50d28a6380910dd6cf83

  • SHA1

    3fac13a3e2416853ce16ed6052ba91e4ec978c86

  • SHA256

    55cb3e812b8545ae08027c08bc3d8d0ffc8e6cd2854547a582ab3c4e2db88d1d

  • SHA512

    fd083c0ec0a95175ef05afb2c60cc1990b868d0a5db483372a294bda2955db7dbe586ab9c3633a7bbb2bfc6f478e09b2f5e04fae41393a626dbb53345fc81838

  • SSDEEP

    49152:vW/ovhCX0Gq//UWbO9501vl/YeUcWw30U9/hYjF:GsUOGtePWw30q6F

Malware Config

Extracted

Family

lumma

Extracted

Family

stealc

Botnet

stok

C2

http://185.215.113.206

Attributes
  • url_path

    /c4becf79229cb002.php

Targets

    • Target

      81cfbdcd567c50d28a6380910dd6cf83.exe

    • Size

      1.7MB

    • MD5

      81cfbdcd567c50d28a6380910dd6cf83

    • SHA1

      3fac13a3e2416853ce16ed6052ba91e4ec978c86

    • SHA256

      55cb3e812b8545ae08027c08bc3d8d0ffc8e6cd2854547a582ab3c4e2db88d1d

    • SHA512

      fd083c0ec0a95175ef05afb2c60cc1990b868d0a5db483372a294bda2955db7dbe586ab9c3633a7bbb2bfc6f478e09b2f5e04fae41393a626dbb53345fc81838

    • SSDEEP

      49152:vW/ovhCX0Gq//UWbO9501vl/YeUcWw30U9/hYjF:GsUOGtePWw30q6F

    • 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

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

    • Downloads MZ/PE file

    • 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 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.

    • Windows security modification

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks