General

  • Target
    Bootstrapper.exe
  • Size 13.2MB
  • Sample240813-e2plhaygqq
  • SHA256 0d64d6c344e5278118e4dc6e91036dc2211bae692d36dfd085c47940b42c768e
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • skuld

C2
  • https://discord.com/api/webhooks/1272766538968989716/t4bHEulMCc8ZPLSkXHMGfVgD58v1g-K-JZub8tE24Ak0gTGty1chfOxer22lc0KvQs6F

Targets

    • Target
      Bootstrapper.exe
    • Size 13.2MB
    • SHA256 0d64d6c344e5278118e4dc6e91036dc2211bae692d36dfd085c47940b42c768e
    • MD5 SHA1 SHA512 SSDEEP
    • Skuld stealer

      An info stealer written in Go lang.

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Command and Scripting Interpreter: PowerShell

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

    • Drops file in Drivers directory

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks