General

  • Target

    polarbsttool.exe

  • Size

    17.7MB

  • Sample

    241019-mtbnnssard

  • MD5

    f263321d315e299c2eb8511aebdc64ff

  • SHA1

    96ebff77b203ddc92096715556ea0ea528169f73

  • SHA256

    48a54831452aac0418e39589a859550a5dd4259eafb82bb6cb16b1aa56b7cd88

  • SHA512

    8f8313e0ad3453e4a8eb949a1da3e11f56a3c9c185f3620dee293f286221205e1d0385261c472d27e55176ff407128ea07b896c56d672e267cae3c649d750540

  • SSDEEP

    393216:nqPnLFXlrPmQ8DOETgsvfGxgU/bwsvE2LfADjq:qPLFXNOQhEwXjk8z

Malware Config

Targets

    • Target

      polarbsttool.exe

    • Size

      17.7MB

    • MD5

      f263321d315e299c2eb8511aebdc64ff

    • SHA1

      96ebff77b203ddc92096715556ea0ea528169f73

    • SHA256

      48a54831452aac0418e39589a859550a5dd4259eafb82bb6cb16b1aa56b7cd88

    • SHA512

      8f8313e0ad3453e4a8eb949a1da3e11f56a3c9c185f3620dee293f286221205e1d0385261c472d27e55176ff407128ea07b896c56d672e267cae3c649d750540

    • SSDEEP

      393216:nqPnLFXlrPmQ8DOETgsvfGxgU/bwsvE2LfADjq:qPLFXNOQhEwXjk8z

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • 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.

    • UPX packed file

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

MITRE ATT&CK Enterprise v15

Tasks