General

  • Target

    b760bcf51fccff727d6e3e0fc44ff4eac267ab82a77604912897282e194baac7N.exe

  • Size

    610KB

  • Sample

    250112-rh24psxrcp

  • MD5

    cfa8191b3ff2d4c91719db8affaa6090

  • SHA1

    1bc6a3276fc444c1faed44347b3180eb8b3803bd

  • SHA256

    b760bcf51fccff727d6e3e0fc44ff4eac267ab82a77604912897282e194baac7

  • SHA512

    8a24aab9c09bb018b7dbe4c78d5437e1bb13aa94111240da99450b3728e2aefd1149c5e007aaefc1856ee591d5e2a8e12bfd96dfa9f620733c835901994cc572

  • SSDEEP

    12288:BPrneXCtwpxa5ICfznTODkiRrZ3VpWCDy7Frd3:BPr4CmpxayCfznTkhVpN6rd

Malware Config

Targets

    • Target

      b760bcf51fccff727d6e3e0fc44ff4eac267ab82a77604912897282e194baac7N.exe

    • Size

      610KB

    • MD5

      cfa8191b3ff2d4c91719db8affaa6090

    • SHA1

      1bc6a3276fc444c1faed44347b3180eb8b3803bd

    • SHA256

      b760bcf51fccff727d6e3e0fc44ff4eac267ab82a77604912897282e194baac7

    • SHA512

      8a24aab9c09bb018b7dbe4c78d5437e1bb13aa94111240da99450b3728e2aefd1149c5e007aaefc1856ee591d5e2a8e12bfd96dfa9f620733c835901994cc572

    • SSDEEP

      12288:BPrneXCtwpxa5ICfznTODkiRrZ3VpWCDy7Frd3:BPr4CmpxayCfznTkhVpN6rd

    • 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