General

  • Target

    LastExternal.exe

  • Size

    6.6MB

  • Sample

    240806-ax9cwstdrj

  • MD5

    07536af2fc16d1a7f6ad8a279ced81ab

  • SHA1

    c57639cc8c6c5ba40df0ae665f963b21fcb799ea

  • SHA256

    6ac3ff0af8913d43d92706b430e67977599b62985c75263fca37dfefd7e8e4cf

  • SHA512

    f330720b4524cad57ad1dbcca1d7ea7baccb8faf4df7796620f00e827e6087b8a7be64245ebe69db99ea03f57454a840b2de9f5d995905939025543edaf5e324

  • SSDEEP

    196608:4NMvM+ysDBPI4sWHqVcUzAoNfovSEYCnFZJetnOQhUk:ZpEIqVcUzAoN9uhMnf

Malware Config

Targets

    • Target

      LastExternal.exe

    • Size

      6.6MB

    • MD5

      07536af2fc16d1a7f6ad8a279ced81ab

    • SHA1

      c57639cc8c6c5ba40df0ae665f963b21fcb799ea

    • SHA256

      6ac3ff0af8913d43d92706b430e67977599b62985c75263fca37dfefd7e8e4cf

    • SHA512

      f330720b4524cad57ad1dbcca1d7ea7baccb8faf4df7796620f00e827e6087b8a7be64245ebe69db99ea03f57454a840b2de9f5d995905939025543edaf5e324

    • SSDEEP

      196608:4NMvM+ysDBPI4sWHqVcUzAoNfovSEYCnFZJetnOQhUk:ZpEIqVcUzAoN9uhMnf

    • 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

    • Clipboard Data

      Adversaries may collect data stored in the clipboard from users copying information within or between applications.

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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.

    • Obfuscated Files or Information: Command Obfuscation

      Adversaries may obfuscate content during command execution to impede detection.

    • Enumerates processes with tasklist

    • Hide Artifacts: Hidden Files and Directories

MITRE ATT&CK Enterprise v15

Tasks