General

  • Target
    Roblox.zip
  • Size 5.4MB
  • Sample260905-knq53a1ape
  • SHA256 a0d3877d7e6043a9583af778c2248193770e39ac2063336c61c4be3b2a2d5e63
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      Roblox.exe
    • Size 5.4MB
    • SHA256 c91aee79b1cfd5ae77aca9a07ca15011866ee69efc9fca34c0540a94e943c47d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Family: xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Downloads MZ/PE file

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Outbound SSH connection to public host

      SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads ssh keys stored on the system

      Tries to access SSH used by SSH programs.

    • 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

    • Checks installed software on the system

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

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v16

Tasks