General

  • Target

    704dad95667ccdb58d605fa9c12bb85f1416a8eb3c48c2897b87e0c72193f0caN.exe

  • Size

    614KB

  • Sample

    250104-ffxknaspfs

  • MD5

    a71bdbb53e08a14b8cf924f160c0b720

  • SHA1

    ee167d53e621bc5dd8a15dee2ed293c065411599

  • SHA256

    704dad95667ccdb58d605fa9c12bb85f1416a8eb3c48c2897b87e0c72193f0ca

  • SHA512

    771f84fe9d7e1becb5f58cfde15e0764a3029055b543cd0cf51e63d40bb400fa94d8f7bb1166c4000d70331b9f45b27c52332a3b987af1dc4bddcf38b888496c

  • SSDEEP

    12288:eUzRRaMMMMM2MMMMMsNsKmnO/IYBD7F5t5WSfvQjPWkx3cPzeRly6ZWfC14q5Dcw:eUzRRaMMMMM2MMMMMsygfRF5tTfvQjPF

Malware Config

Targets

    • Target

      704dad95667ccdb58d605fa9c12bb85f1416a8eb3c48c2897b87e0c72193f0caN.exe

    • Size

      614KB

    • MD5

      a71bdbb53e08a14b8cf924f160c0b720

    • SHA1

      ee167d53e621bc5dd8a15dee2ed293c065411599

    • SHA256

      704dad95667ccdb58d605fa9c12bb85f1416a8eb3c48c2897b87e0c72193f0ca

    • SHA512

      771f84fe9d7e1becb5f58cfde15e0764a3029055b543cd0cf51e63d40bb400fa94d8f7bb1166c4000d70331b9f45b27c52332a3b987af1dc4bddcf38b888496c

    • SSDEEP

      12288:eUzRRaMMMMM2MMMMMsNsKmnO/IYBD7F5t5WSfvQjPWkx3cPzeRly6ZWfC14q5Dcw:eUzRRaMMMMM2MMMMMsygfRF5tTfvQjPF

    • 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