General

  • Target

    e724df98ce87ea905e9923017c94322059f1919d27bf6f70d38e2a353ff3a569.exe

  • Size

    4.8MB

  • Sample

    210501-a2jhsv18s2

  • MD5

    739562b08a6131cce604c0e7ffa1a07d

  • SHA1

    eabe2b22d6af539871b81625c0c3a3efb58afd90

  • SHA256

    e724df98ce87ea905e9923017c94322059f1919d27bf6f70d38e2a353ff3a569

  • SHA512

    457dd85e77bf9bd32275230185b7c350245729afeb7c0eaa50a52bbdc109ed41a0d9a4ecf16a186c3bf163f31e86d91060dcb7f7d64494bcb5f6ee21d8f32c9f

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://myexternalip.com/raw

Targets

    • Target

      e724df98ce87ea905e9923017c94322059f1919d27bf6f70d38e2a353ff3a569.exe

    • Size

      4.8MB

    • MD5

      739562b08a6131cce604c0e7ffa1a07d

    • SHA1

      eabe2b22d6af539871b81625c0c3a3efb58afd90

    • SHA256

      e724df98ce87ea905e9923017c94322059f1919d27bf6f70d38e2a353ff3a569

    • SHA512

      457dd85e77bf9bd32275230185b7c350245729afeb7c0eaa50a52bbdc109ed41a0d9a4ecf16a186c3bf163f31e86d91060dcb7f7d64494bcb5f6ee21d8f32c9f

    • Matrix Ransomware

      Targeted ransomware with information collection and encryption functionality.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Blocklisted process makes network request

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • Sets service image path in registry

    • UPX packed file

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

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Looks up external IP address via web service

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

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v6

Tasks