General

  • Target

    4a8482bb46cf7a8882a22fbe9316d464dda43754497ac257044d8b8589134ee6

  • Size

    1.0MB

  • Sample

    240417-clbctsah82

  • MD5

    09752a03dc3ce4890b90c0e540cea5d7

  • SHA1

    abc1084774f52d2738cb17ab0f47727e35b5cef0

  • SHA256

    4a8482bb46cf7a8882a22fbe9316d464dda43754497ac257044d8b8589134ee6

  • SHA512

    7b058dd97e4879fdc979012fd14f1abf9233eda46d79d02c862311e2b384c12fa682a5e5fb5b6e1aa27d841525bcc9c15b1b3f0303990fa94c57985e938c5360

  • SSDEEP

    24576:k7SHe38daZZILe07sg4r5QqChXAYsOojCm0zapfEAcFchqSTGw:kWS8ow56iXSfpwLw

Malware Config

Extracted

Family

agenttesla

Credentials

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.bestconstructltd.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Cm54227290

Targets

    • Target

      4a8482bb46cf7a8882a22fbe9316d464dda43754497ac257044d8b8589134ee6

    • Size

      1.0MB

    • MD5

      09752a03dc3ce4890b90c0e540cea5d7

    • SHA1

      abc1084774f52d2738cb17ab0f47727e35b5cef0

    • SHA256

      4a8482bb46cf7a8882a22fbe9316d464dda43754497ac257044d8b8589134ee6

    • SHA512

      7b058dd97e4879fdc979012fd14f1abf9233eda46d79d02c862311e2b384c12fa682a5e5fb5b6e1aa27d841525bcc9c15b1b3f0303990fa94c57985e938c5360

    • SSDEEP

      24576:k7SHe38daZZILe07sg4r5QqChXAYsOojCm0zapfEAcFchqSTGw:kWS8ow56iXSfpwLw

    • AgentTesla

      Agent Tesla is a remote access tool (RAT) written in visual basic.

    • 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.

    • 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