General

  • Target

    libvlc.dll

  • Size

    186KB

  • Sample

    240712-lyhr4sycmr

  • MD5

    b8ff818acd53b0016bf83013a8d5f606

  • SHA1

    a543a37a74631c0b28898ce6d6cc8db70059669b

  • SHA256

    709777343867951673bdc9d75a58c462bae590215e6e124b9c7abccfbbed0b30

  • SHA512

    96adae886b5a4d0369140da948e70fb9eea15bab1703d1e54e5ea7b3e8cc7b72bef9995f8d06243968d6b9eb3614fb9ca9e179f2da0542d7d0af5ce523958cb0

  • SSDEEP

    3072:pM6pRaubfTPeuD6spsr8VEkycdLQvJLyLMs:pMAHTTGWI0pycqRLyL1

Malware Config

Targets

    • Target

      libvlc.dll

    • Size

      186KB

    • MD5

      b8ff818acd53b0016bf83013a8d5f606

    • SHA1

      a543a37a74631c0b28898ce6d6cc8db70059669b

    • SHA256

      709777343867951673bdc9d75a58c462bae590215e6e124b9c7abccfbbed0b30

    • SHA512

      96adae886b5a4d0369140da948e70fb9eea15bab1703d1e54e5ea7b3e8cc7b72bef9995f8d06243968d6b9eb3614fb9ca9e179f2da0542d7d0af5ce523958cb0

    • SSDEEP

      3072:pM6pRaubfTPeuD6spsr8VEkycdLQvJLyLMs:pMAHTTGWI0pycqRLyL1

    • Chaos

      Ransomware family first seen in June 2021.

    • Chaos Ransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Drops startup file

    • Reads user/profile data of web browsers

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

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks