Resubmissions

21-05-2024 09:18

240521-k9s7jsga63 10

19-05-2024 08:28

240519-kdg5eaaf2t 10

General

  • Target

    https://zelenka.guru/proxy.php?link=https%3A%2F%2Fgofile.io%2Fd%2FrrVkK9&hash=aee71227bcd2e07805a068cfb8b0c4b2

  • Sample

    240521-k9s7jsga63

Malware Config

Extracted

Family

umbral

C2

https://discordapp.com/api/webhooks/1186062061508239390/wfwPZiGPzytybpy8t2Hsp4XOI3B_k0QMNcH-OzuAphqi3y6_IFvyz8BsbHzw84brTS6o

Targets

    • Target

      https://zelenka.guru/proxy.php?link=https%3A%2F%2Fgofile.io%2Fd%2FrrVkK9&hash=aee71227bcd2e07805a068cfb8b0c4b2

    • Detect Umbral payload

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • Umbral

      Umbral stealer is an opensource moduler 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.

    • Modifies Windows Firewall

    • 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.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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 v15

Tasks