General

  • Target

    c77a6599b4bd28f71bb3355d9d6a1e85a4dd18b14aa94e61fcfc8be15f40b59f

  • Size

    676KB

  • Sample

    250117-bdtzjaxjdw

  • MD5

    4c9c8b1410de7835cfd8e29c48d5adf9

  • SHA1

    b136b7f45703fa117c31a588c66d3666505016e3

  • SHA256

    c77a6599b4bd28f71bb3355d9d6a1e85a4dd18b14aa94e61fcfc8be15f40b59f

  • SHA512

    c8344c661dafb2899dc95d77c5780f1c4f540212732c998c76079df9b53c9c11a5c7d250790b09e55828cc763486248c34f33b04a5f38dfee96e62d8ae1c3675

  • SSDEEP

    6144:GWusAIFB++velibxPyp/64wjOjn6cB3rZtT/Yq3v9Auky+4N137Am/vF:Gz7IFjvelQypyfy7z6u7+4D37Am/vF

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.yandex.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Boy12345#

Targets

    • Target

      c77a6599b4bd28f71bb3355d9d6a1e85a4dd18b14aa94e61fcfc8be15f40b59f

    • Size

      676KB

    • MD5

      4c9c8b1410de7835cfd8e29c48d5adf9

    • SHA1

      b136b7f45703fa117c31a588c66d3666505016e3

    • SHA256

      c77a6599b4bd28f71bb3355d9d6a1e85a4dd18b14aa94e61fcfc8be15f40b59f

    • SHA512

      c8344c661dafb2899dc95d77c5780f1c4f540212732c998c76079df9b53c9c11a5c7d250790b09e55828cc763486248c34f33b04a5f38dfee96e62d8ae1c3675

    • SSDEEP

      6144:GWusAIFB++velibxPyp/64wjOjn6cB3rZtT/Yq3v9Auky+4N137Am/vF:Gz7IFjvelQypyfy7z6u7+4D37Am/vF

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads WinSCP keys stored on the system

      Tries to access WinSCP stored sessions.

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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.

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks