General

  • Target

    3a597442f34e7152c58866bb1a14ac03dd7ff2b59834fb93e8f44390c7b5caad

  • Size

    1.5MB

  • Sample

    220306-bnqd4ahga5

  • MD5

    c3376b76d094ec9af26b125dceb9abab

  • SHA1

    42f96a7dda594cf5ba26c4c302366cca54a5e794

  • SHA256

    3a597442f34e7152c58866bb1a14ac03dd7ff2b59834fb93e8f44390c7b5caad

  • SHA512

    1a1e11996f6407378ac1a758001e4d71508a3593862a8b4b26f764924f71ddb8e2ea66d67c3794d31e84274d23e355e93275151aff9a70134bb776b1fa3b040e

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://myexternalip.com/raw

Targets

    • Target

      3a597442f34e7152c58866bb1a14ac03dd7ff2b59834fb93e8f44390c7b5caad

    • Size

      1.5MB

    • MD5

      c3376b76d094ec9af26b125dceb9abab

    • SHA1

      42f96a7dda594cf5ba26c4c302366cca54a5e794

    • SHA256

      3a597442f34e7152c58866bb1a14ac03dd7ff2b59834fb93e8f44390c7b5caad

    • SHA512

      1a1e11996f6407378ac1a758001e4d71508a3593862a8b4b26f764924f71ddb8e2ea66d67c3794d31e84274d23e355e93275151aff9a70134bb776b1fa3b040e

    • 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.

    • Checks computer location settings

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

    • 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