General

  • Target
    https://cdn.discordapp.com/attachments/1485831108577853483/1546159558932562031/Paste_Land_Free.rar?ex=6aa8a80d&is=6aa7568d&hm=70d2a5947d66ef2efa8e1fda50a5edff2fa950f5c8b056f2ee47f34b6ef50b85&
  • Sample260914-p3t8gsywbv

Malware Config

Extracted

Family
  • umbral

Version
  • v1.3

C2
  • https://discord.com/api/webhooks/1545905402720419980/uxv--l0ow__ws--DAl2Ot1sa_dmOLoTwOmfgnoiEq4dVpG1YjTfC4VFnYBUZBHEiQJae

Targets

    • Target
      https://cdn.discordapp.com/attachments/1485831108577853483/1546159558932562031/Paste_Land_Free.rar?ex=6aa8a80d&is=6aa7568d&hm=70d2a5947d66ef2efa8e1fda50a5edff2fa950f5c8b056f2ee47f34b6ef50b85&
    • Detects Umbral payload

    • Family: Umbral

      Umbral stealer is an open-source modular stealer written in C#.

    • Command and Scripting Interpreter: PowerShell

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

    • Disables one or more Microsoft Defender components

      Uses the Powershell Set-MpPreference cmdlet to disable one or more Microsoft Defender components.

    • Drops file in Drivers directory

    • Disables automatic submission of suspicious files to Microsoft by Windows Defender

      Uses the Powershell Set-MpPreference cmdlet to prevent Windows Defender from automatically sending files to Microsoft for analysis.

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Looks up external IP address via web service

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

MITRE ATT&CK Enterprise v16

Tasks