Resubmissions

22/01/2025, 00:45

250122-a4j2kszjdy 10

General

  • Target

    RobloxPlayerInstaller.exe

  • Size

    7.3MB

  • Sample

    250122-a4j2kszjdy

  • MD5

    e16e648456a76cf6c12be47b86b4401c

  • SHA1

    a033d9a48bf918dbba65ef29576dfdcb5db2194c

  • SHA256

    3032ddec0e6152a0aa21929060e8fd6fc0a55c4d7d8c534fe6be24775dbc39ae

  • SHA512

    68f335d81d20b8e5e273310148c011aaf8c2d42f2902da31653f705090f2c86f6a1c872c40e776aebd0c394abc32b87efa0213c95292467fa3b5ba0b8c9a6d6f

  • SSDEEP

    98304:rgvrH5wKTU78I5MrnIp+elIZzF6WIhU5J5B16SgenYKJODmPFPYFxArinAFxDB:UrH5wKTUYV8qtv5BUSr0DmPFPaAmA5

Malware Config

Targets

    • Target

      RobloxPlayerInstaller.exe

    • Size

      7.3MB

    • MD5

      e16e648456a76cf6c12be47b86b4401c

    • SHA1

      a033d9a48bf918dbba65ef29576dfdcb5db2194c

    • SHA256

      3032ddec0e6152a0aa21929060e8fd6fc0a55c4d7d8c534fe6be24775dbc39ae

    • SHA512

      68f335d81d20b8e5e273310148c011aaf8c2d42f2902da31653f705090f2c86f6a1c872c40e776aebd0c394abc32b87efa0213c95292467fa3b5ba0b8c9a6d6f

    • SSDEEP

      98304:rgvrH5wKTU78I5MrnIp+elIZzF6WIhU5J5B16SgenYKJODmPFPYFxArinAFxDB:UrH5wKTUYV8qtv5BUSr0DmPFPaAmA5

    • Modifies WinLogon for persistence

    • Modifies Windows Defender DisableAntiSpyware settings

    • Disables RegEdit via registry modification

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Event Triggered Execution: Image File Execution Options Injection

    • Checks computer location settings

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

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies system executable filetype association

    • Obfuscated with Agile.Net obfuscator

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

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • 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

    • Checks system information in the registry

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

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks