General

  • Target

    ec1a1baf23225c897f846d8e55e7d2e76404324f00c5b1673702aff85ae883f9.exe

  • Size

    653KB

  • Sample

    241217-klbycsvphx

  • MD5

    1559eba1084a34643e6456d416478ca0

  • SHA1

    b6bef8dd97c615df23733745fa02986ffcb60e34

  • SHA256

    ec1a1baf23225c897f846d8e55e7d2e76404324f00c5b1673702aff85ae883f9

  • SHA512

    bfc027e4d82f1958d552837b2ac5a5f75b4ab9d77095c60a9c5f4eb0730dd6a38a56e9dcd834ba073037a08675bffdfc3bc22c9dce61666cd454d060a647cada

  • SSDEEP

    12288:JTYkuB+NC7dTWJ3s0gKhdQw66zqHR7L3jwAS+QWE3PfQy75alnnEX7nuoK6HQDX3:JsB+Nytop966zqR7jUAFQWeXQy70yTPK

Malware Config

Targets

    • Target

      ec1a1baf23225c897f846d8e55e7d2e76404324f00c5b1673702aff85ae883f9.exe

    • Size

      653KB

    • MD5

      1559eba1084a34643e6456d416478ca0

    • SHA1

      b6bef8dd97c615df23733745fa02986ffcb60e34

    • SHA256

      ec1a1baf23225c897f846d8e55e7d2e76404324f00c5b1673702aff85ae883f9

    • SHA512

      bfc027e4d82f1958d552837b2ac5a5f75b4ab9d77095c60a9c5f4eb0730dd6a38a56e9dcd834ba073037a08675bffdfc3bc22c9dce61666cd454d060a647cada

    • SSDEEP

      12288:JTYkuB+NC7dTWJ3s0gKhdQw66zqHR7L3jwAS+QWE3PfQy75alnnEX7nuoK6HQDX3:JsB+Nytop966zqR7jUAFQWeXQy70yTPK

    • Expiro family

    • Expiro, m0yv

      Expiro aka m0yv is a multi-functional backdoor written in C++.

    • Expiro payload

    • Disables taskbar notifications via registry modification

    • 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.

    • Unsecured Credentials: Credentials In Files

      Steal credentials from unsecured files.

    • Windows security modification

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops Chrome extension

    • Enumerates connected drives

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

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks