General

  • Target

    documents.exe

  • Size

    791KB

  • Sample

    220520-1thc4shdhn

  • MD5

    425d7d79e7b8a6b79890453f242f830b

  • SHA1

    b1dbeb640fd5853906014f923bd10ab82832c717

  • SHA256

    6a0cdf63baad32236d845d0027822d4e9c67ac4f9bddd9933ada09f9811dbca5

  • SHA512

    51c93e7b771c09f9a1bdaaf0191598eb5a95b6cac49e2bd2ab34d613e6607dc8a6d85537494d382c85d16778298e3f25d60652542795f9158e506a4519e1ba05

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.subnet-group.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    cr0cksh1t

Extracted

Family

agenttesla

Credentials

Targets

    • Target

      documents.exe

    • Size

      791KB

    • MD5

      425d7d79e7b8a6b79890453f242f830b

    • SHA1

      b1dbeb640fd5853906014f923bd10ab82832c717

    • SHA256

      6a0cdf63baad32236d845d0027822d4e9c67ac4f9bddd9933ada09f9811dbca5

    • SHA512

      51c93e7b771c09f9a1bdaaf0191598eb5a95b6cac49e2bd2ab34d613e6607dc8a6d85537494d382c85d16778298e3f25d60652542795f9158e506a4519e1ba05

    • AgentTesla

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

    • suricata: ET MALWARE AgentTesla Exfil Via SMTP

      suricata: ET MALWARE AgentTesla Exfil Via SMTP

    • Drops file in Drivers directory

    • Checks computer location settings

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

    • Accesses Microsoft Outlook profiles

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks