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General

Malware Config

Targets

    • Troldesh family

    • Troldesh, Shade, Encoder.858

      Troldesh is a ransomware spread by malspam.

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Modifies boot configuration data using bcdedit

    • Remote Service Session Hijacking: RDP Hijacking

      Adversaries may hijack a legitimate user's remote desktop session to move laterally within an environment.

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Enables test signing to bypass driver trust controls

      Allows any signed driver to load without validation against a trusted certificate authority.

    • Modifies Windows Firewall

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Sets service image path in registry

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Impair Defenses: Safe Mode Boot

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Legitimate hosting services abused for malware hosting/C2

    • Modifies WinLogon

    • Network Share Discovery

      Attempt to gather information on host network.

    • Password Policy Discovery

      Attempt to access detailed information about the password policy used within an enterprise network.

    • Hide Artifacts: Hidden Users

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks